A.V.C COLLEGE OF ENGINEERING
MANNAMPANDAL
DEPARTMENT OF MECHANICAL
ENGINEERING
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REDUCTION OF CREEK NOISE PROBLEM
IN MOTOR DRIVEN POWER STEERING
(MDPS)
Guided by:
P.Amithkishore, M.E
Asst.professor
Project members:
S.Ashik farhath (80107144007)
S.Nisarudeen (80107144030)
S.Paramanandham (80107144032)
N.Rajmohan (80107144507)
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ABSTRACT:
Now a days need of automobile such as cars, heavy
trucks , containers..etc, are keep on increasing. But at the
same time, problems in automobiles also increases.
Our project is in the steering system particularly in
Motor Driven Power Steering (MDPS) system. In this system,
various noises like rattle noise, creek noise, dol dol noise, steur
steur noise produced. Among these noises, creek noise is the major
problem produce in MDPS. So we have to do the project in this noise.
In this MDPS, creek noise happens in between the worm shaft
and motor. This noise is produced because of two factors such as less
amount of grease and the coupler design of motor in MDPS.
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Motor Driven Power Steering(MDPS)
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Motor Driven Power Steering
 A motor driven power steering
system includes a steering
column connected to a steering
wheel.
 A motor with a rotation shaft is
connected to the steering
column.
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 Worm wheel and worm
shaft are meshed and
connected with the
steering column.
 Electronic control
unit(ECU) which is a
controlling device also
attached with the
steering column.
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NOISE PROBLEMS IN MDPS
Creek noise
Rattle noise
Steur Steur noise
Dol Dol noise
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Creek Noise:
It is the unwanted sound occur in between the worm
shaft and motor coupler of motor driven power steering.
Reason:
 Less amount of Grease
 design of Motor coupler
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GREASE LESS IN MOTOR
Less grease
Worm shaft
Motor ass’y
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METHODOLOGY:
 Automated Grease apply(through automated machine)
instead of Manual in between the worm shaft input and
Motor coupler .
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AUTOMATIC
PHOTOS
MANUAL
□ Motor greasing apply & spreading in the spline by
manually
□ Grease applying & spreading by Automation
□ Uniform spreading of the grease over the spline.
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 GREASE AMOUNT MONITORING
BEFORE
AFTER
LIMIT SWITCH
INCREASED LEVEL
 LIMIT SWITCH POSITION IN BOTTOM LEVEL OF CYLIND
ER
 ENSURE THE 10% AMOUNT OF THE GREASE IN RESERV
OIR
 LIMIT SWITCH POSITION ADJUSTED TO UP SIDE
 ENSURE THE 20% AMOUNT OF THE GREASE IN RESERV
OIR
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 Grease flow study in various time
Sl.n
o
Time
Timer set
In Sec
Grease weight
In gm
1
3.15 PM
3.4
1.0
2
3.40 PM
3.4
1.0
3
3.55 PM
3.4
1.0
4
4.15 PM
3.4
1.0
5
4.30 PM
3.4
1.0
6
4.45 PM
3.4
1.0
7
5.00 PM
3.4
1.0
8
5.15 PM
3.4
1.0
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5.30 PM
3.4
1.0
10
6.45 PM
3.4
1.0
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 PROBLEM CONDITION
RECEIVED CONDITION
AFTER GREASE APPLIED CONDITION
NOISE FOUND
NO NOISE
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GRAPH SHOWS…

From the graph, we come to know that the noise
level in the MDPS is “very much below to the
acceptable limit” through the performance tester
machine. Hence the creek noise produced in the
power steering is reduced.
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CONCLUSION
• Hence the creek noise in the “MOTOR
DRIVEN POWER STEERING” is reduced
within the limit by means of automatic
application of grease.
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THANK YOU
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