INPUT DATA FOR
TORSIONAL VIBRATION CALCULATIONS (TVC)
(POWER UNIT FOR MARINE INSTALLATIONS)
Name of Vessel / New Building No.
Name of Shipyard / Yard No.
Name of Owner / Shipping Company
Address of Owner / Shipping Company
Volvo Penta engine type
Purpose of engine drive system (e.g. propulsion, auxiliary, emergency, pump or alternator)
Engine continuous power (kW) and speed (rpm), (for alternator the TVC is made with 110 % intermittent power)
Classification Society for approval of the TVC (for classified installations only)
Order No. of Volvo Penta importer/dealer/sales representative
The input data on these sheets is issued by (Name, Company, sign.)
Date
For Volvo Penta Head Office use only
Engine order No.
TVC order No.
Note I Suppl information under paragraphs 1.0 and 2.0
1
GUIDELINES
The specified data on these sheets is required for carrying out torsional vibration calculations.
It is extremely important that these data sheets, after the data has been filled in, are sent to AB
Volvo Penta (under address below) together with the engine order form. A certain amount of
time must be allowed for handling the TVC. Before delivery of the engine the TVC should be approved by the Classification Society.
Figure I shows a SCHEMATIC lay-out of an engine drive system. The numbers indicated in the
figure corresponds to the numbered headings in the text.
Follow the numbered headings step by step (and this way proceed through the figure) and fill in
the requested data where applicable. Delete or mark “not applicable” (N/A) for systems, components or data not applicable for the actual installation.
ALTERNATIVE DATA asked for should be filled in when it is difficult to give the requested primary data.
Should any of the configurations shown in Figure 1 not correspond to the actual installation, supply input data for the TVC by using the formats under applicable headings and refer to a supplied
schematic lay-out of the actual installation.
The data to be filled in can either be given in Imperial (English), US, metric (MKSA) or SI units.
However, SI units are preprinted, so if other than SI units are used it should be noted what unit
is being used.
Please sent this form and other necessary documentation to:
AB Volvo Penta
Quality system & classification dept, 47870 Z1.1
S-405 08 Gothenburg
SWEDEN
or to fax no: +46 31 537447
“MASS MOMENT OF INERTIA”
Data requested for “mass moment of inertia” can be given in different ways, as moment of inertia or flywheel mass.
Moment of inertia is designated J and can be expressed in units of kgm2 (lb.ft2) or kpms2
(lbf.ft.s2). The latter units indicate that the quantity has been divided by gravity. It should also be
noted to which axle the moment of inertia is referred (if it is not understood by the design, i.e. a
symmetric axle).
Flywheel mass is desionated mD2, GD2 or WR2 and expressed in units of kgm2 (lb.ft2), kpm2
(lbf.ft2) or lbf.ft2 (kpm2) respectively.
The following relation applies: mD2 = 4J
GD2 = 4gJ
WR2 = gJ
where g is the gravity (approx. 9.81 m/s2)
2
SCHEMATIC LAY-OUT OF AN ENGINE DRIVE SYSTEM
(The numbers indicated in the figure corresponds to the numbered headings in the text.)
Figure 1.
3
1. Power take-off (PTO) at front end (DAMPER SIDE) of engine
1.0 VOLVO PENTA will supply information under this paragraph! Continue to
paragraph 1.1.
For this order the following standard equipment will be delivered with the engine for connection to the engine’s front end
(e.g. bilge pump, flush pump, hydraulic pump, extra drive, extra pulley, charging alternator, clutch, coupling, reduction
gear, pto, etc.):
1.1 Disengageable coupling (clutch), rotating at engine speed
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
J: .........................................................................
_________ kgm2
J: .........................................................................
_________ kgm2
2
engine side, GD : ........................................................................
_________ kgm2
GD2: ........................................................................
_________ kgm2
pto-side,
1.2 Flange coupling, rotating at engine speed
J: .........................................................................
_________ kgm2
or Flywheel mass for the complete coupling, GD2: ........................................................................
_________ kgm2
Moment of inertia for the complete coupling,
Alternative data:
Flange diameter: ...........................................................................................................................
__________ mm
Flange thickness: .........................................................................................................................
__________ mm
Hub outer diameter: ......................................................................................................................
__________ mm
Hub length: ...................................................................................................................................
__________ mm
Overall length: ..............................................................................................................................
__________ mm
Material: ........................................................................................................................................
_____________
or
Drawing of the coupling, indicating material and
dimensions.
Drawing no: .................................................................................................................................. No. ____________
1.3 Flexible coupling, rotating at engine speed
Make and type:
For couplings supplied by Volvo Penta this data is not required.
J: .........................................................................
_________ kgm2
J: .........................................................................
_________ kgm2
engine side, GD2: ........................................................................
_________ kgm2
GD2: ........................................................................
_________ kgm2
The data below are given for an ambient temp. for the engine installation of: .................................
___________ °C
Nominal torque of the coupling, TkN: ............................................................................................
__________ Nm
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
4
Max torque of the coupling, Tkmax: .................................................................................................
__________ Nm
Max continuous vibratory torque at 10 Hz, TkW: ..........................................................................
__________ Nm
Dynamic torsional stiffness, cTdyn: ................................................................................................
_______ Nm/rad
(if not linear, it should be given as a function of load on the coupling, curve no: .............................
____________ )
Relative damping factor, Ψ : ..........................................................................................................
_____________
Allowable energy loss, PkW: ........................................................................................................
__________ kW
1.4 Belt pulley (driving pulley), rotating at engine speed
Moment of inertia,
J: .................................................................................................................
2
_________ kgm2
or Flywheel mass, GD : ................................................................................................................
_________ kgm2
Pitch diameter for the belt: ............................................................................................................
__________ mm
Alternative data:
Drawing of the pulley, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
1.5 Shaft, rotating at engine speed
Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.) on the shaft, the
moment of inertia for all masses on the shaft if not given under another heading.
Drawing no: .................................................................................................................................. No. ____________
Alternative data:
Shaft diameter: .............................................................................................................................
__________ mm
Shaft length: .................................................................................................................................
__________ mm
Shaft material: ...............................................................................................................................
_____________
1.6 Disengageable coupling (clutch), rotating at engine speed
J: .........................................................................
_________ kgm2
J: .........................................................................
_________ kgm2
engine side,GD2: ........................................................................
_________ kgm2
GD2: ........................................................................
_________ kgm2
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
1.7 Flange coupling, rotating at engine speed
J: ........................................................................
_________ kgm2
or Flywheel mass for the complete coupling, GD2: .......................................................................
_________ kgm2
Moment of inertia for the complete coupling,
Alternative data:
Flange diameter: ..........................................................................................................................
__________ mm
Flange thickness: .........................................................................................................................
__________ mm
Hub outer diameter: ......................................................................................................................
__________ mm
Hub length: ...................................................................................................................................
__________ mm
Overall length: ..............................................................................................................................
__________ mm
Material: .......................................................................................................................................
_____________
or
Drawing of the coupling, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
1.8 Flexible coupling, rotating at engine speed
Make and type:
For couplings supplied by Volvo Penta this data is not required.
J: ........................................................................
_________ kgm2
J: ........................................................................
_________ kgm2
engine side, GD2: .......................................................................
_________ kgm2
GD2: .......................................................................
_________ kgm2
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
5
The data below are given for an ambient temp.
for the engine installation of: ...............................................................................................................
___________ °C
Nominal torque of the coupling, TkN: .................................................................................................
__________ Nm
Max torque of the coupling, Tkmax: ......................................................................................................
__________ Nm
Max continuous vibratory torque at 10 Hz, TkW: ...............................................................................
__________ Nm
Dynamic torsional stiffness, cTdyn: .....................................................................................................
_______ Nm/rad
(if not linear, it should be given as a function of load on the coupling, curve no: ................................
_____________
Relative damping factor, Ψ: ................................................................................................................
_____________
Allowable energy loss, PkW: ..............................................................................................................
__________ kW
1.9 Driven unit, rotating at engine speed
Pump:
Speed range for which pump is engaged: ....................................................................................
__________ rpm
Max load: .....................................................................................................................................
__________ kW
Moment of inertia of the complete unit,
_________ kgm2
J: .............................................................................
2
or Flywheel mass of the complete unit, GD : ............................................................................
_________ kgm2
Torsional stiffness of the main shaft: ............................................................................................
_______ Nm/rad
Alternative data:
Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia for
all masses on the shaft (i.e. pump gear etc.).
Drawing no: .................................................................................................................................. No. ____________
Compressor:
Speed range for which compressor is engaged: ..........................................................................
__________ rpm
Max load: .....................................................................................................................................
__________ kW
To supply sufficient data for a complex compressor, the alternative data below is just an example.
Contact Volvo Penta Sales Engineering in case of such an installation.
Alternative data:
Max gas pressure in the cylinders: ..............................................................................................
________ N/mm2
Moment of inertia for the complete unit,
J: ...............................................................................
_________ kgm2
or Flywheel mass for the complete unit, GD2: ..............................................................................
_________ kgm2
Torsional stiffness of the main shaft: ............................................................................................
_______ Nm/rad
or
Curve showing the gas pressure in the cylinders for one stroke.
Curve no: .....................................................................................................................................
_____________
Drawing of the compressor crankshaft, indicating material and dimensions.
Drawing no: ..................................................................................................................................
Mass elastic – dynamic data of the compressor:
Mass
damper
6
Moment of inertia
J (kgm2)
_______________
Stiffness
c (Nm/rad)
______________
gear
_______________
______________
cyl 1
_______________
______________
cyl 2
_______________
______________
....
_______________
______________
flywheel
_______________
______________
_____________
Unbalanced masses: (or unbalanced forces, in N) ......................................................................
_____________
Total weight of the rotating masses per cylinder: .........................................................................
___________ kg
Total weight of the reciprocating (oscillating) masses per cylinder: .............................................
___________ kg
Alternator:
Drawing of the alternator shaft, indicating: material, dimensions, the position of masses on the
shaft, the moment of inertia for all masses on the shaft (i.e. fan, rotor etc.)
Drawing no: .................................................................................................................................. No. ____________
1.10 Belt pulley (driven pulley), rotating at driven unit’s (1.18) speed
J: .................................................................................................................
_________ kgm2
or Flywheel mass, GD2: ................................................................................................................
_________ kgm2
Pitch diameter for the belt: ............................................................................................................
__________ mm
Moment of inertia,
Alternative data:
Drawing of the pulley, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
1.11 Jockey pulley
J: .................................................................................................................
_________ kgm2
or Flywheel mass, GD2: ................................................................................................................
_________ kgm2
Pitch diameter for the belt: ............................................................................................................
__________ mm
Moment of inertia,
Alternative data:
Drawing of the pulley, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
1.12 Belts
V-belts, Poly-V-belts, Toothed belts:
Stiffness (in drag): ........................................................................................................................
_______ Nm/rad
Number of belts in parallel: ............................................................................................................
___________ qty
Alternative data:
Make and type of the belt: .............................................................................................................
_____________
Cross-section area of the belt: ......................................................................................................
__________ mm2
Modulus of elasticity of the material: .............................................................................................
________ N/mm2
Damping (can be set to 0, if not available): ....................................................................................
_____________
1.13 Distance between the shafts of the driving and the driven pulley
Distance between the shafts: .......................................................................................................
__________ mm
1.14 Shaft, rotating at driven unit’s (1.18) speed
Drawing of the shaft, indicating: material, dimensions, the position of masses
(belt pulleys, bearings etc.) on the shaft, the moment of inertia for all masses
on the shaft if not given under another heading.
Drawing no: .................................................................................................................................. No. ____________
Alternative data:
Shaft diameter: .............................................................................................................................
__________ mm
Shaft length: .................................................................................................................................
__________ mm
Shaft material: ...............................................................................................................................
_____________
7
1.15 Disengageable coupling (clutch), rotating at driven unit’s (1.18) speed
J: ...........................................................................
_________ kgm2
J: ...........................................................................
_________ kgm2
engine side, GD2: ..........................................................................
_________ kgm2
GD2: ..........................................................................
_________ kgm2
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
1.16 Flange coupling, rotating at driven unit’s (1.18) speed
J: .........................................................................
_________ kgm2
or Flywheel mass for the complete coupling, GD2: ........................................................................
_________ kgm2
Moment of inertia for the complete coupling,
Alternative data:
Flange diameter: ...........................................................................................................................
__________ mm
Flange thickness: .........................................................................................................................
__________ mm
Hub outer diameter: ......................................................................................................................
__________ mm
Hub length: ...................................................................................................................................
__________ mm
Overall length: ..............................................................................................................................
__________ mm
Material: ........................................................................................................................................
_____________
or
Drawing of the coupling, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
1.17 Flexible coupling, rotating at driven unit’s (1.18) speed
Make and type:
For couplings supplied by Volvo Penta this data is not required.
J: ...........................................................................
_________ kgm2
J: ...........................................................................
_________ kgm2
engine side, GD2: ..........................................................................
_________ kgm2
GD2: ..........................................................................
_________ kgm2
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
The data below are given for an ambient temp.
for the engine installation of: ..........................................................................................................
___________ °C
Nominal torque of the coupling, TkN: ............................................................................................
__________ Nm
Max torque of the coupling, Tkmax: .................................................................................................
__________ Nm
Max continuous vibratory torque at 10 Hz, TkW: ..........................................................................
__________ Nm
Dynamic torsional stiffness, cTdyn: ................................................................................................
_______ Nm/rad
(if not linear, it should be given as a
function of load on the coupling, curve no: ....................................................................................
____________ )
Relative damping factor, Ψ: ...........................................................................................................
_____________
Allowable energy loss, PkW: ........................................................................................................
__________ kW
1.18 Driven unit
Speed of the driven unit: ...............................................................................................................
__________ rpm
or ratio of the belt drive,
(speed of engine : speed of driven unit): .......................................................................................
8
_____________
Pump:
Speed range for which pump is engaged: .....................................................................................
__________ rpm
Max load: ......................................................................................................................................
__________ kW
Moment of inertia of the complete unit,
J: .................................................................................
_________ kgm2
or Flywheel mass of the complete unit, GD2: .................................................................................
_________ kgm2
Torsional stiffness of the main shaft: .............................................................................................
_______ Nm/rad
Alternative data:
Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft,
the moment of inertia for all masses on the shaft (i.e. pump gear etc.).
Drawing no: .................................................................................................................................. No. ____________
Compressor:
Speed range for which compressor is engaged: ...........................................................................
__________ rpm
Max load: ......................................................................................................................................
__________ kW
To supply sufficient data for a complex compressor, the alternative data below is just an example.
Contact Volvo Penta Sales Engineering in case of such an installation.
Alternative data:
Max gas pressure in the cylinders: ...............................................................................................
________ N/mm2
Moment of inertia for the complete unit,
J: .................................................................................
_________ kgm2
or Flywheel mass for the complete unit,GD2: ................................................................................
_________ kgm2
Torsional stiffness of the main shaft: .............................................................................................
_______ Nm/rad
or
Curve showing the gas pressure in the cylinders for one stroke.
Curve no: ..................................................................................................................................... No. ____________
Drawing of the compressor crankshaft, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
Mass elastic – dynamic data of the compressor:
Mass
Moment of inertia
J (kgm2)
Stiffness
c (Nm/rad)
damper
_______________
______________
gear
_______________
______________
cyl 1
_______________
______________
cyl 2
_______________
______________
....
_______________
______________
flywheel
_______________
______________
Unbalanced masses: (or unbalanced forces, in N)
Total weight of the rotating masses per cylinder: ..........................................................................
___________ kg
Total weight of the reciprocating (oscillating) masses
per cylinder: ..................................................................................................................................
___________ kg
Alternator:
Drawing of the alternator shaft, indicating: material, dimensions, the position of masses on
the shaft, the moment of inertia for all masses on the shaft (i.e. fan, rotor etc.)
Drawing no: .................................................................................................................................. No. ____________
9
2. Power take-off (PTO) at rear end (FLYWHEEL SIDE) of engine
2.0 VOLVO PENTA will supply information under this paragraph! Continue to paragraph 2.1.
For this order the following standard equipment will be delivered with the engine for connection to the
engine’s rear end:
Reduction gear (Reverse gear):
Make and type:
Gear ratio (speed of input shaft : output shaft):
Propeller shaft flange included:
Coupling, engine – reduction gear:
Make and type:
Other equipment: (power take-off, clutch etc.)
Make and type:
2.1 Coupling, engine – reduction gear
Only to be filled in if not delivered by Volvo Penta!
Make and type:
For couplings supplied by Volvo Penta this data is not required.
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
J: ..........................................................................
_________ kgm2
J: ..........................................................................
_________ kgm2
2
engine side, GD : .........................................................................
_________ kgm2
GD2: .........................................................................
_________ kgm2
pto-side,
The data below are given for an ambient temp.
for the engine installation of: ..........................................................................................................
___________ °C
Nominal torque of the coupling, TkN: ............................................................................................
__________ Nm
Max torque of the coupling, Tkmax: .................................................................................................
__________ Nm
Max continuous vibratory torque at 10 Hz, TkW: ..........................................................................
__________ Nm
Dynamic torsional stiffness, cTdyn: ................................................................................................
_______ Nm/rad
(if not linear, it should be given as a function of load on the coupling, curve no: .............................
____________ )
Relative damping factor, Ψ : ..........................................................................................................
_____________
Allowable energy loss, PkW: ........................................................................................................
__________ kW
2.2 Reduction gear (Reverse gear)
Only to be filled in if not delivered by Volvo Penta!
Make and type: .............................................................................................................................
_____________
Gear ratio: ....................................................................................................................................
_____________
Drawing of the reduction gear, indicating material and dimensions of the shafts and wheels.
Alternative data: (to be supplied on separate paper)
Moment of inertia or flywheel mass for all shafts and wheels.
Torsional stiffness for all shafts.
Diameter of all shafts.
Gear ratios.
10
2.3 Disengageable coupling (clutch), rotating at speed of engine or reduction gear output shaft
J: ........................................................................
_________ kgm2
J: ........................................................................
_________ kgm2
engine side, GD2: .......................................................................
_________ kgm2
GD2: .......................................................................
_________ kgm2
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
2.4 Flange coupling, rotating at speed of engine or reduction gear output shaft
J: .........................................................................
_________ kgm2
or Flywheel mass for the complete coupling, GD2: ........................................................................
_________ kgm2
Moment of inertia for the complete coupling,
Alternative data:
Flange diameter: ...........................................................................................................................
__________ mm
Flange thickness: .........................................................................................................................
__________ mm
Hub outer diameter: ......................................................................................................................
__________ mm
Hub length: ...................................................................................................................................
__________ mm
Overall length: ..............................................................................................................................
__________ mm
Material: ........................................................................................................................................
_____________
or
Drawing of the coupling, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
2.5 Flexible coupling, rotating at speed of engine or reduction gear output shaft
Make and type: .............................................................................................................................
_____________
(data for the following flexible couplings, if of standard specification, are in the Volvo Penta TVC
library and therefore data for these need not to be given below:
Nor-Mex, Vulkan, Centa, Stromag, Holset and couplings of make RBD, Lord and Torflex
used together with Twin Disc reduction gears)
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
J: .........................................................................
_________ kgm2
J: .........................................................................
_________ kgm2
2
engine side, GD : ........................................................................
_________ kgm2
GD2: ........................................................................
_________ kgm2
pto-side,
The data below are given for an ambient temp.
for the engine installation of: ..........................................................................................................
___________ °C
Nominal torque of the coupling, TkN: ............................................................................................
__________ Nm
Max torque of the coupling, Tkmax: .................................................................................................
__________ Nm
Max continuous vibratory torque at 10 Hz, TkW: ..........................................................................
__________ Nm
Dynamic torsional stiffness, cTdyn: ................................................................................................
_______ Nm/rad
(if not linear, it should be given as a
function of load on the coupling, curve no: ....................................................................................
____________ )
Relative damping factor, Ψ : ..........................................................................................................
_____________
Allowable energy loss, PkW: ........................................................................................................
__________ kW
2.6 Belt pulley (driving pulley), rotating at speed of engine or reduction gear output shaft
Moment of inertia, J: .....................................................................................................................
_________ kgm2
or Flywheel mass, GD2: ................................................................................................................
_________ kgm2
Pitch diameter for the belt: ............................................................................................................
___________ nm
Alternative data:
Drawing of the pulley, indicating material and
dimensions.
Drawing no: .................................................................................................................................. No. ____________
11
2.7 Shaft (intermediate shaft, countershaft, shaft included in propeller shaft transmission, etc.),
rotating at speed of engine or reduction gear output shaft
Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.)
on the shaft, the moment of inertia for all masses on the shaft if not given under another heading.
Drawing no: .................................................................................................................................. No. ____________
Alternative data:
Shaft diameter: .............................................................................................................................
__________ mm
Shaft length: .................................................................................................................................
__________ mm
Shaft material: ...............................................................................................................................
_____________
2.8 Disengageable coupling (clutch), rotating at speed of engine or reduction gear output shaft
J: ........................................................................
_________ kgm2
J: ........................................................................
_________ kgm2
engine side, GD2: .......................................................................
_________ kgm2
GD2: .......................................................................
_________ kgm2
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
2.9 Flange coupling (incl. split- or clamp-coupling), rotating at speed of engine or reduction gear output shaft
J: .........................................................................
_________ kgm2
or Flywheel mass for the complete coupling, GD2: ........................................................................
_________ kgm2
Moment of inertia for the complete coupling,
Alternative data:
Flange diameter: ...........................................................................................................................
__________ mm
Flange thickness: .........................................................................................................................
__________ mm
Hub outer diameter: ......................................................................................................................
__________ mm
Hub length: ...................................................................................................................................
__________ mm
Overall length: ..............................................................................................................................
__________ mm
Material: ........................................................................................................................................
_____________
or
Drawing of the coupling, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
2.10 Flexible coupling, rotating at speed of engine or reduction gear output shaft
Make and type:
For couplings supplied by Volvo Penta this data is not required.
J: .........................................................................
_________ kgm2
J: .........................................................................
_________ kgm2
engine side, GD2: ........................................................................
_________ kgm2
GD2: ........................................................................
_________ kgm2
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
pto-side,
The data below are given for an ambient temp.
12
for the engine installation of: ..........................................................................................................
___________ °C
Nominal torque of the coupling, TkN: ............................................................................................
__________ Nm
Max torque of the coupling, Tkmax: .................................................................................................
__________ Nm
Max continuous vibratory torque at 10 Hz, TkW: ..........................................................................
__________ Nm
Dynamic torsional stiffness, cTdyn: ................................................................................................
_______ Nm/rad
(if not linear, it should be given as a function of load on the coupling, curve no: .............................
No. __________
Relative damping factor, Ψ: ...........................................................................................................
_____________
Allowable energy loss, PkW: ........................................................................................................
__________ kW
2.11 Driven unit, rotating at speed of engine or reduction gear output shaft
Alternator:
Drawing of the alternator shaft, indicating: material, dimensions, the position of masses on the
shaft, the moment of inertia for all masses on the shaft (i.e. fan, rotor etc.)
Drawing no: .................................................................................................................................. No. ____________
Compressor:
Speed range for which compressor is engaged: ...........................................................................
__________ rpm
Max load: ......................................................................................................................................
__________ kW
To supply sufficient data for a complex compressor, the alternative data below is just an example.
Contact Volvo Penta Sales Engineering in case of such an installation.
Alternative data:
Max gas pressure in the cylinders: ...............................................................................................
________ N/mm2
Moment of inertia for the complete unit,
J: ................................................................................
_________ kgm2
or Flywheel mass for the complete unit, GD2: ...............................................................................
_________ kgm2
Torsional stiffness of the main shaft: .............................................................................................
_______ Nm/rad
or
Curve showing the gas pressure in the cylinders for one stroke.
Curve no: ..................................................................................................................................... No. ____________
Drawing of the compressor crankshaft, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
Mass elastic – dynamic data of the compressor:
Mass
Moment of inertia
J (kgm2)
Stiffness
c (Nm/rad)
damper
_______________
______________
gear
_______________
______________
cyl 1
_______________
______________
cyl 2
_______________
______________
....
_______________
______________
flywheel
_______________
______________
Unbalanced masses: (or unbalanced forces, in N).
Total weight of the rotating masses per cylinder: ..........................................................................
___________ kg
Total weight of the reciprocating (oscillating) masses per cylinder: ...............................................
___________ kg
Pump:
Speed range for which pump is engaged: .....................................................................................
__________ rpm
Max load: ......................................................................................................................................
__________ kW
Moment of inertia of the complete unit,
J: .................................................................................
_________ kgm2
or Flywheel mass of the complete unit, GD2: .................................................................................
_________ kgm2
Torsional stiffness of the main shaft: .............................................................................................
_______ Nm/rad
Alternative data:
Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft,
the moment of inertia for all masses on the shaft (i.e. pump gear etc.).
Drawing no: .................................................................................................................................. No. ____________
13
2.12 Propeller shaft, rotating at speed of engine or reduction gear output shaft
Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.)
on the shaft, the moment of inertia for all masses on the shaft if not given under another heading.
Drawing no: .................................................................................................................................. No. ____________
Alternative data:
Shaft diameter: .............................................................................................................................
__________ mm
Shaft length: .................................................................................................................................
__________ mm
Shaft material: ...............................................................................................................................
_____________
2.13 Propeller, rotating at speed of engine or reduction gear output shaft
The propeller rotating in water:
Moment of inertia for the propeller,
J: ........................................................................................
2
or Flywheel mass for the propeller, GD : .......................................................................................
_________ kgm2
_________ kgm2
Alternative data:
The propeller out of water (exclusive allowance for water rotating in the same direction):
J: ........................................................................................
_________ kgm2
or Flywheel mass for the propeller, GD2: .......................................................................................
_________ kgm2
Moment of inertia for the propeller,
or
Drawing of the propeller, indicating: material, dimensions (diameter), number of blades.
Drawing no: .................................................................................................................................. No. ____________
2.14 Belt pulley (driven pulley), rotating at driven unit’s (2.22) or propeller’s (2.24) speed
Moment of inertia,
J: .................................................................................................................
2
_________ kgm2
or Flywheel mass, GD : ................................................................................................................
_________ kgm2
Pitch diameter for the belt: ............................................................................................................
__________ mm
Alternative data:
Drawing of the pulley, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
2.15 Jockey pulley
J: ................................................................................................................
_________ kgm2
or Flywheel mass, GD2: ...............................................................................................................
_________ kgm2
Pitch diameter for the belt: ............................................................................................................
__________ mm
Moment of inertia,
Alternative data:
Drawing of the pulley, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
2.16 Belts
V-belts, Poly-V-belts, Toothed belts:
Stiffness (in drag): ........................................................................................................................
_______ Nm/rad
Number of belts in parallel: ............................................................................................................ No. ____________
Alternative data:
Make and type of the belt:
Cross-section area of the belt: ......................................................................................................
__________ mm
Modulus of elasticity of the material: .............................................................................................
________ N/mm2
Damping (can be set to 0, if not available): ....................................................................................
_____________
2.17 Distance between the shafts of the driving and the driven pulley
Distance between the shafts: .......................................................................................................
14
__________ mm
2.18 Shaft, rotating at driven unit’s (2.22) or propeller’s (2.24) speed
Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.)
on the shaft, the moment of inertia for all masses on the shaft if not given under another heading.
Drawing no: .................................................................................................................................. No. ____________
Alternative data:
Shaft diameter: .............................................................................................................................
__________ mm
Shaft length: .................................................................................................................................
__________ mm
Shaft material: ...............................................................................................................................
_____________
2.19 Disengageable coupling (clutch), rotating at driven unit’s (2.22) or propeller’s (2.24) speed
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
J: ........................................................................
_________ kgm2
J: ........................................................................
_________ kgm2
2
engine side, GD : .......................................................................
_________ kgm2
GD2: .......................................................................
_________ kgm2
pto-side,
2.20 Flange coupling, rotating at driven unit’s (2.22) or propeller’s (2.24) speed
Moment of inertia for the complete coupling, J: ............................................................................
_________ kgm2
or Flywheel mass for the complete coupling, GD2: .......................................................................
_________ kgm2
Alternative data:
Flange diameter: ...........................................................................................................................
__________ mm
Flange thickness: .........................................................................................................................
__________ mm
Hub outer diameter: ......................................................................................................................
__________ mm
Hub length: ...................................................................................................................................
__________ mm
Overall length: ..............................................................................................................................
__________ mm
Material: ........................................................................................................................................
_____________
or
Drawing of the coupling, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
2.21 Flexible coupling, rotating at driven unit’s (2.22) or propeller’s (2.24) speed
Make and type:
For couplings supplied by Volvo Penta this data is not required.
Moment of inertia, both halves, engine side,
pto-side,
or Flywheel mass, “
“
,
J: ........................................................................
_________ kgm2
J: ........................................................................
_________ kgm2
2
engine side, GD : .......................................................................
_________ kgm2
GD2: .......................................................................
_________ kgm2
pto-side,
The data below are given for an ambient temp.
for the engine installation of: ..........................................................................................................
___________ °C
Nominal torque of the coupling, TkN: ............................................................................................
__________ Nm
Max torque of the coupling, Tkmax: .................................................................................................
__________ Nm
Max continuous vibratory torque at 10 Hz, TkW: ..........................................................................
__________ Nm
Dynamic torsional stiffness, cTdyn: ................................................................................................
_______ Nm/rad
(if not linear, it should be given as a function of load on the coupling, curve no: ............................. No. ____________
Relative damping factor, Ψ: ...........................................................................................................
_____________
Allowable energy loss, PkW: ........................................................................................................
__________ kW
15
2.22 Driven unit
Speed of the driven unit: ...............................................................................................................
__________ rpm
or ratio of the belt drive and reduction gear
(speed of engine : speed of driven unit): .......................................................................................
_____________
Alternator:
Drawing of the alternator shaft, indicating: material, dimensions, the position of masses on the shaft,
the moment of inertia for all masses on the shaft (i.e. fan, rotor etc.)
Drawing no: .................................................................................................................................. No. ____________
Compressor:
Speed range for which compressor is engaged: ...........................................................................
__________ rpm
Max load: ......................................................................................................................................
__________ kW
To supply sufficient data for a complex compressor, the alternative data below is just an example.
Contact Volvo Penta Sales Engineering in case of such an installation.
Alternative data:
Max gas pressure in the cylinders: ...............................................................................................
________ N/mm2
Moment of inertia for the complete unit,
J: .................................................................................
_________ kgm2
or Flywheel mass for the complete unit,GD2: ................................................................................
_________ kgm2
Torsional stiffness of the main shaft: .............................................................................................
_______ Nm/rad
or
Curve showing the gas pressure in the cylinders for one stroke.
Curve no: ..................................................................................................................................... No. ____________
Drawing of the compressor crankshaft, indicating material and dimensions.
Drawing no: .................................................................................................................................. No. ____________
Mass elastic – dynamic data of the compressor:
Mass
Moment of inertia
J (kgm2)
Stiffness
c (Nm/rad)
damper
_______________
______________
gear
_______________
______________
cyl 1
_______________
______________
cyl 2
_______________
______________
....
_______________
______________
flywheel
_______________
______________
Unbalanced masses: (or unbalanced forces, in N)
Total weight of the rotating masses per cylinder: ..........................................................................
___________ kg
Total weight of the reciprocating (oscillating) masses per cylinder: ...............................................
___________ kg
Pump:
Speed range for which pump is engaged: .....................................................................................
__________ rpm
Max load: ......................................................................................................................................
__________ kW
Moment of inertia of the complete unit,
J: .................................................................................
_________ kgm2
or Flywheel mass of the complete unit, GD2: .................................................................................
_________ kgm2
Torsional stiffness of the main shaft: .............................................................................................
_______ Nm/rad
Alternative data:
Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft,
the moment of inertia for all masses on the shaft (i.e. pump gear etc.).
Drawing no: .................................................................................................................................. No. ____________
16
2.23 Propeller shaft, rotating at propeller’s (2.24) speed
Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.)
on the shaft, the moment of inertia for all masses on the shaft if not given under another heading.
Drawing no: .................................................................................................................................. No. ____________
Alternative data:
Shaft diameter: .............................................................................................................................
__________ mm
Shaft length: .................................................................................................................................
__________ mm
Shaft material: ...............................................................................................................................
_____________
2.24 Propeller
Speed of the propeller: ..................................................................................................................
__________ rpm
or ratio of the belt drive and reduction gear
(speed of engine : speed of propeller): ..........................................................................................
_____________
The propeller rotating in water:
J: .......................................................................................
_________ kgm2
or Flywheel mass for the propeller, GD2: ......................................................................................
_________ kgm2
Moment of inertia for the propeller,
Alternative data:
The propeller out of water (exclusive allowance for water rotating in the same direction):
J: .......................................................................................
_________ kgm2
or Flywheel mass for the propeller, GD2: ......................................................................................
_________ kgm2
Moment of inertia for the propeller,
or
Drawing of the propeller, indicating: material, dimensions (diameter), number of blades.
7733565-1 Note! Can not be ordered from publication store
Drawing no: .................................................................................................................................. No. ____________
17