Multi-Engine GenSet
Ultra Low Emissions
Road-Switcher Locomotive
National Railway Equipment Co.
THE N-VIROMOTIVE
NEW LOCOMOTIVE CONCEPT
1. Uses Multiple 700 HP Diesel Engine GenSets In Order To Significantly
Reduce NOx and PM Exhaust Emissions
2. Controls the Horsepower and RPM Levels For Each Engine In Order To
Achieve Even Better Emissions Levels and Fuel Consumption Rates.
3. Manages Start / Stop Functionality To Minimize Engine Idling.
4. Provides All Electrical Power To A Common Connection So That DC
Power Can Be Managed To Individual Traction Motors For Better
Adhesion To The Rail and Provide All Necessary Power For The
Operator’s Cab, Air Brake System And Equipment Cooling.
5. Arrange All The Major Components On The Locomotive Frame To
Facilitate Replacement When Required.
1
Uses Multiple Small Diesel Engine Gensets To Reduce Harmful
Exhaust Emissions To A Minimum
USA EPA EMISSIONS LIMITS FOR LOCOMOTIVES VS. NREC's
N-VIROMOTIVE
EMISSIONS
(G/BHP-H)
NOx
HC
CO
PM
EPA TIER II RAIL
SWITCHER LINE HAUL
8.1
5.5
0.6
0.3
2.4
1.5
0.24
0.2
N-VIROMOTIVE
% LOWER
LINE HAUL
67%
2.88
87%
0.06
44%
0.98
67%
0.07
SWITCHER
2.67
0.08
1.34
0.08
9
% LOWER
48%
81%
35%
67%
USA EPA RAIL TIER
II SWITCHER
8
7
USA EPA RAIL TIER
II LINE HAUL
6
5
NREC SWITCHER SWITCHER
4
3
2
NREC SWITCHER LINE HAUL
1
0
NOx
HC
CO
PM
Controls The Horsepower And RPM Levels For Each Engine In
Order To Achieve Even Better Emissions Levels And Fuel
Consumption Rates.”
Throttle
Notch
Eng 1
BHP
Eng 1
THP
Eng 1
RPM
Idle
1
2
3
4
5
6
7
8
67
228
388
685
547
661
594
667
697
0
145
305
585
447
561
494
567
597
1200
1500
1500
1800
1800
1800
1800
1800
1800
Eng 2
BHP
390
485
514
587
686
Eng 2
THP
373
469
494
567
664
Eng 2
RPM
1500
1500
1800
1800
2000
Eng 3
BHP
429
587
686
Eng 3
THP
412
567
664
Eng 3
RPM
Loco
BHP
Loco
THP
1500
1800
2000
67
228
388
685
937
1146
1537
1841
2069
0
145
305
585
820
1030
1400
1701
1925
FUEL CONSUMPTION COMPARISON
Throttle
Notch
% of
Throttle*
N-Viro
BHP
N-Viro
Fuel Rate
Gal./Hr.
Idle**
1
2
3
4
5
6
7
8
55.0%
4.0%
4.0%
4.0%
4.0%
4.0%
4.0%
4.0%
17.0%
100.0%
67
228
388
685
937
1146
1537
1841
2069
2.1
12.7
21.8
35.5
51.5
61.2
83.5
97.9
110.0
** Includes 50% Reduction in Idle from Idle Limiting
% REDUCTION:
* AAR Medium Duty Cycle
N-Viro
BHP
Weighted
16-645E BHP
Weighted
17
4.49
110
8.19
328
19.39
624
34.37
911
49.51
1214
65.98
1523
83.65
1854
103.99
2193
126.65
TOTAL WEIGHTED:
36.85
9.12
15.52
27.40
37.48
45.84
61.48
73.64
351.73
659.06
9.35
4.40
13.12
24.96
36.44
48.56
60.92
74.16
372.81
644.72
BSFC:
0.0513
0.060
16-645E
BHP
16-645E Fuel
Rate Gal./Hr.
N-Viro Fuel 16-645E Fuel
Rate
Rate
Weighted**
Weighted
0.57
0.51
0.87
1.42
2.06
2.45
3.34
3.92
18.71
33.84
2.47
0.33
0.78
1.37
1.98
2.64
3.35
4.16
21.53
38.61
14%
2
20.7% Fuel Consumption Savings
Throttle
Notch
12 645E
RPM
NREC
SW RPM
8
7
6
5
4
3
2
1
Idle
900
820
729
651
568
490
370
300
300
1800
1500
1500
1500
1800
1500
1500
1300
900
NREC
SW
ENGs
RUN
2
2
2
2
1
1
1
1
1
12 645E
12 645E NREC SW
Fuel Rate
BHP
BHP
Gal/Hr
1517
1334
1016
858
641
415
221
62
10
1377
1210
1051
844
658
430
234
123
44
68.86
65.36
56.79
49.29
34.64
23.57
12.50
6.79
2.86
Duty
Cycle
%
0.8%
0.2%
1.5%
3.6%
3.6%
5.8%
12.3%
12.4%
59.8%
Totals:
12 645E
Weighted
BHP
NREC SW
Weighted
BHP
12 645E
Weighted
Gal/Hr
NREC SW
Weighted
Gal/Hr
12.14
2.67
15.24
30.89
23.08
24.07
27.18
7.69
5.98
148.93
11.02
2.42
15.76
30.40
23.68
24.93
28.76
15.28
26.31
178.55
0.72
0.15
0.92
1.73
1.30
1.39
1.69
0.70
1.93
10.53
0.55
0.13
0.85
1.77
1.25
1.37
1.54
0.84
1.71
10.01
12 645E
0.0707
NREC SW
0.0561
% Diff
20.7%
Weighted BSFC:
0.0707
0.08
90.6
76.4
61.1
48.0
36.0
24.0
13.7
5.6
3.2
NREC SW
Fuel Rate
Gal/Hr
0.0561
0.06
0.04
0.02
0.00
12 645E
NREC SW
3
Throttle Schedule
Not ch
Posit ion
Idl e
1
2
3
4
5
6
7
8
engines
r unning
1
1
1
1
1
2
2
2
2
engine
r pm
900
1300
1500
1500
1800
1600
1500
1500
1800
t ot al
hor sepower
25
125
225
425
650
850
1000
1250
1400
dut y
cycl e
59.8%
12.4%
12.3%
5.8%
3.6%
3.6%
1.5%
0.2%
0.8%
hor sepower
weight ed
14.95
15.50
27.68
24.65
23.40
30.60
15.00
2.50
11.20
100%
80%
Idl e - 4
5-8
60%
94%
6%
40%
20%
0%
Idl e - 4
5-8
4
Manages Start / Stop Functionality To Minimize Engine Idling.
55.0%
Dut y Cycl e % of Idl e =
13.2
Dail y Idl e Hour s =
50%
Pr oj ect ed Dail y Idl e Limit ing % =
6.6
Pr oj ect ed Dail y Idl e Limit ing Hour s =
------------------------------------------------------------------------------------------------------------------------------------------------Gal l ons
Lit er s
2.10
7.95
Fuel per Hour @idl e =
13.86
52.47
Fuel Saved per Day f or 1 Locomotive =
4,158.00
15,741.00
Fuel Saved per Month f or 10 Locomotives =
505,890.00 1,915,155.00
Fuel Saved per Year f or 100 Locomotives =
Electronic Propulsion Control
¾ NRE Electronics provides the Electronic Control
module called the N-FORCE. This system provides all
propulsion, accessory equipment, and low voltage
control. The N-FORCE is equipped with an Operator
Interface Panel display for the monitoring of real time
events, storing fault and run time data, and performing
self tests.
¾ A high voltage DC Chopper provides propulsion
power to each traction motor separately for enhancing
adhesion control by as much as 50% + compared to
conventional DC locomotives.
5
Provide All Electrical Power To A Common Connection So That DCPower
Can Be Managed To Individual Traction Motors For Better Adhesion To
The Rail And Provide All Necessary Power For The Operator’s Cab, Air
Brake System And Equipment Cooling.
N-VIROMOTIVE
#1 GENSET
SIMPLIFIED SCHEMATIC OF ELECTRICAL SYSTEMS
TRACTION
ALT
RECTIFIER
AC
#2 GENSET
DC
NFORCE
RECTIFIER
AC
DC
NFORCE
NEG
POS
TRACTION
ALT
P1
#3 GENSET
RECTIFIER
AC
DC
NFORCE
RECTIFIER
AC
DC
NFORCE
NEG
POS
NEG
POS
P2
NEG
POS
P3
P4
#1
MOTOR
CONT
SIG
RET
#2
MOTOR
CONT
SIG
RET
#3
MOTOR
CONT
SIG
RET
#4
MOTOR
CONT
SIG
RET
CURRENT
TRANS
SIG
RET
CURRENT
TRANS
SIG
RET
CURRENT
TRANS
SIG
RET
CURRENT
TRANS
SIG
RET
TRACTION
ALT
LVPS
Low Voltage
Power Supply
480 VAC to 74 VDC
CONTACTOR
TM3 A
TM4 A
NEG
RV
CONTACTOR
T. M.
BLOWER
TM2 A
TM1 A
RV
RV
RV
TM1
TM2
TM3
TM4
F
F
F
F
RV
RV
RV
RV
AIR
COMPR
2GS14B
6
TRACTIVE EFFORT VS SPEED 2GS14B
90,000
TRACTIVE EFFORT - LBS.
80,000
62:15 Gear Ratio
40 inch Wheels
1300 THP - 129 Tons
D77 Traction Motors
Dispatch TE 77,406 LBS. (35,111 Kg)
70,000
Actual THP May Vary
Entire Curve May Not Be Available At All
Tim es Due To Lim itations of Wheel/Rail
Adhesion
60,000
50,000
Dispatch TE is based on 30% adhesion
Continuous TE 44,165 LBS. (20,033 Kg)
40,000
30,000
20,000
10,000
0
0
10
20
30
40
50
60
70
80
SPEED - MPH
3GS21B
7
TRACTIVE EFFORT VS SPEED 3GS21B
90,000
TRACTIVE EFFORT - LB
62:15 Gear Ratio
40 inch Wheels
1970 THP - 132.5 Tons
D77 Traction Motors
Dispatch TE 80,386 LBS. (36,462 Kg)
80,000
70,000
Actual THP May Vary
Entire Curve May Not Be
Available At All Times
Due To Limitations of
Wheel/Rail Adhesion
60,000
50,000
Continuous TE 46,044 LBS. (20,885 Kg)
Dispatch TE is based on
30% adhesion.
40,000
30,000
20,000
10,000
0
0
10
20
30
40
50
60
70
SPEED - MPH
Cummins QSK19 Tier III
Engine Type
= In-Line, 4-Cycle, 6-Cyl
Displacement
= 1159 cu. In. 19 Liters
Rated Power
= 510-700 BHP 379-522 kW
Aspiration
= Turbocharged
Air-to-Air Charge Air Cooled
¾ The Engine is designed and certified as EPA Tier III Off-Road
compliant
¾ Full Authority Electronic Controls
¾ Cummins Modular Common-Rail Fuel System
¾ Over 6500 QSK19 Engines in Industrial Applications
8
The GenSet in Process
Work in Process
9
Work In Process
Work In Process
10
GENSET INSTALLED
Electric Cabinet in Process
11
Microprocessor
NRE Electronics “N-FORCE”
DC Chopper Compartment
Chopper Cooling Air Exhaust
12
Cab Console
in Process
Cab Console Completed
13
Accessory Equipment
¾ Equipped with a variable speed 3 phase 240-480 VAC electric motor
driven Atlas-Copco model rotary screw air compressor.
¾ The Equipment blower provides 15,000 cfm cooling air for the traction
motors, DC Choppers, DC Rectifier, Low Voltage Power Supply and
Electric Cabinet Pressurization.
¾ The Low Voltage Power Supply Converts 240-480 VAC to 64-74 VDC for
battery charging and low voltage control.
¾ A DC to AC inverter is provided to convert 64-74 VDC to 115 VAC for
RV type heating, ventilation and air conditioning (HVAC) power as well
as 24 VDC for Low Voltage GenSet Control.
¾ Equipped with standard 26L air brake.
¾ NYAB electronic air brake is optional.
Air Compressor
and
Equipment
Blower
14
RV Type HVAC
ORIGINAL MP15 DC CORE LOCOMOTIVE
15
16
17