Page 1
Natural Gas Engine E 2876 E 312 03 / 2011
Technical Data
Principle: 4-stroke Otto gas engine
No of cylinders : 6 in line
Engine cooling : Without engine water pump, coolant to be circulated by external
water pump with temperature control.
Lubrication : Pressure lubrication by gear-driven pump, exchangeable lube-oil filter
in full flow and lube oil cooler integrated in engine coolant circuit.
Spark plugs: Special spark plug for industrial gas engines.
Starter motor: Pre-engaged-drive starter 24 V - 6.5 kW
Starter battery capacity: 88 Ah, 24 V
Since our products are in continuous development, we reserve the right to make technical modifications.
Page 2
Natural Gas Engine E 2876 E 312 03 / 2011
Technical Data
ENGINE DATA 50 Hz 50 Hz
λ = 1.00 METRIC ENGLISH
Rated speed rpm 1500 rpm 1500
ISO standard power (COP) kW 150 bhp 201
Air ratio λ 1.00 λ 1.00
Configuration in-line engine in-line engine
No of cylinders 6 6
Bore mm 128 in 5,04
Stroke mm 166 in 6,54
Swept volume L 12,82 cu in 782
Direction of rotation looking on flywheel counter clockwise counter clockwise
Flywheel housing SAE 1 SAE 1
Ring gear with number of teeth Z 160 Z 160
Compression ratio ε 12:1 ε 12:1
Mean effective pressure bar 9,36 psi 135,8
Mean piston speed m/s 8,30 in/s 326,8
Lube oil consumption up to kg/h 0,125 lb/hr 0,033
Lube oil filling quantity min./max. l 19/28 U.S. gal 5.0/7.4
Coolant filling quantity l 16 U.S. gal 4,23
max. operating pressure bar 2 psi 29,0
min. engine coolant circulation quantity l/min 346 U.S. gal/min 91,4
Coolant temperature min. °C 80 °F 176
max. coolant temperature °C 88 °F 190
Difference (inlet - outlet max.) K 6 K 6
max. suction pressure mbar 15 psi 0,22
max. exhaust back pressure mbar 40 psi 0,58
Engine width mm 830 in 32,68
Engine length mm 1330 in 52,36
Engine height mm 1035 in 40,75
Engine weight, dry kg 830 lb 1830
Lube oil to MAN works standard M 3271-2 and coolant to MAN works standard M 324 Type NF
Gas quality to MAN data sheet - minimum requirement for the gas quality for MAN gas engines
Air ratio measured by lambdameter ETAS LA 4_E
Page 3
Natural Gas Engine E 2876 E 312 03 / 2011
Technical Data
RATING DATA 50 Hz
λ = 1.00 METRIC
Load % 100 75 50
Ignition timing °BTDC 18 18 18
ISO standard rating kW 150 113 75
Coolant heat kW 128 108 86
Exhaust heat up to 120 °C kW 79 63 44
Radiation heat max. kW 18
Energy input kW 392 311 227
Fuel consumption MJ/kWh 9,4 9,9 10,9
Efficiency
mechanical % 38,4 36,2 33,0
thermal % 52,8 54,9 57,2
total % 91,2 91,1 90,3
Mass flows
Combustion air kg/h 475 385 282
Fuel kg/h 29 23 17
Exhaust gas mass flow rate, wet kg/h 503 408 298
Temperatures
Exhaust gas temperature °C 590 580 570
Emissions at 100 % load (Correlation 5 % O2)
NOX mg/Nm³ < 4500
ppm < 2750
CO mg/Nm³ < 4500
ppm < 3600
Reference gas mixing unit: RMG 985a-100/90 and ignition system IC 100
The technical data are based on natural gas with a calorific value of 10 kWh/Nm³ and a methane no. > 80
The technical data indicated is based on standard conditions acc to DIN ISO 3046-1
Standard conditions: Atmospheric pressure absolute: 100 kPa
Air temperature 25 °C
Relative air humidity 30 %
Rating adaptation at ambient conditions acc to DIN ISO 3046-1
The tolerance for the specific fuel consumption is + 5 % at rated output
The tolerance for the usable heat is 7 % at rated output
The coolant data are based on a 40 % portion of antifreeze
Page 4
Natural Gas Engine E 2876 E 312 03 / 2011
Technical Data
RATING DATA 50 Hz
λ = 1.00 ENGLISH
Load % 100 75 50
Ignition timing °BTDC 18 18 18
ISO standard rating Btu/min 8530 6398 4265
Coolant heat Btu/min 7279 6142 4891
Exhaust heat up to 248 °F Btu/min 4483 3559 2502
Radiation heat max. Btu/min 1024
Energy input Btu/min 22274 17665 12914
Fuel consumption Btu/bhp-hr 6644 7025 7704
Efficiency
mechanical % 38,4 36,2 33,0
thermal % 52,8 54,9 57,2
total % 91,2 91,1 90,3
Mass flows
Combustion air lb/hr 1046 850 621
Fuel lb/hr 63 50 37
Exhaust gas mass flow rate, wet lb/hr 1109 900 658
Temperatures
Exhaust gas temperature °F 1094 1076 1058
Emissions at 100 % load (Correlation 15 % O2)
NOX g/bhp-hr < 11,2
ppm < 822
CO g/bhp-hr < 11,3
ppm < 1350
Reference gas mixing unit: RMG 985a-100/90 and ignition system IC 100
The technical data are based on natural gas with a calorific value of 970 Btu/cu ft and a methane no. > 80
The technical data indicated is based on standard conditions acc to DIN ISO 3046-1
Standard conditions: Atmospheric pressure: 14,5 psi or 328 ft above sea level
Air temperature 77 °F
Relative air humidity 30 %
Rating adaptation at ambient conditions acc to DIN ISO 3046-1
The tolerance for the specific fuel consumption is + 5 % at rated output
The tolerance for the usable heat is 7 % at rated output
The coolant data are based on a 40 % portion of antifreeze
Page 5
Natural Gas Engine E 2876 E 312 03 / 2011
Preliminary Technical Data
ENGINE DATA 60 Hz 60 Hz
λ = 1.00 METRIC ENGLISH
Rated speed rpm 1800 rpm 1800
ISO standard power (COP) kW 170 bhp 228
Air ratio λ 1.00 λ 1.00
Configuration in-line engine in-line engine
No of cylinders 6 6
Bore mm 128 in 5,04
Stroke mm 166 in 6,54
Swept volume L 12,82 cu in 782
Direction of rotation looking on flywheel counter clockwise counter clockwise
Flywheel housing SAE 1 SAE 1
Ring gear with number of teeth Z 160 Z 160
Compression ratio ε 12:1 ε 12:1
Mean effective pressure bar 8,84 psi 128,3
Mean piston speed m/s 9,96 in/s 392,1
Lube oil consumption up to kg/h 0,125 lb/hr 0,033
Lube oil filling quantity min./max. l 19/28 U.S. gal 5.0/7.4
Coolant filling quantity l 16 U.S. gal 4,23
max. operating pressure bar 2 psi 29,0
min. engine coolant circulation quantity l/min 392 U.S. gal/min 103,5
Coolant temperature min. °C 80 °F 176
max. coolant temperature °C 88 °F 190
Difference (inlet - outlet max.) K 6 K 6
max. suction pressure mbar 15 psi 0,22
max. exhaust back pressure mbar 40 psi 0,58
Engine width mm 830 in 32,68
Engine length mm 1330 in 52,36
Engine height mm 1035 in 40,75
Engine weight, dry kg 830 lb 1830
Lube oil to MAN works standard M 3271-2 and coolant to MAN works standard M 324 Type NF
Gas quality to MAN data sheet - minimum requirement for the gas quality for MAN gas engines
Air ratio measured by lambdameter ETAS LA 4_E
Page 6
Natural Gas Engine E 2876 E 312 03 / 2011
Preliminary Technical Data
RATING DATA 60 Hz
λ = 1.00 METRIC
Load % 100 75 50
Ignition timing °BTDC 20 20 20
ISO standard rating kW 170 128 85
Coolant heat kW 145 124 100
Exhaust heat up to 120 °C kW 98 76 55
Radiation heat max. kW 18
Energy input kW 449 354 264
Fuel consumption MJ/kWh 9,5 10,0 11,2
Efficiency
mechanical % 38,0 36,0 32,2
thermal % 54,1 56,4 58,5
total % 92,1 92,4 90,7
Mass flows
Combustion air kg/h 544 440 328
Fuel kg/h 33 26 19
Exhaust gas mass flow rate, wet kg/h 576 465 347
Temperatures
Exhaust gas temperature °C 620 610 600
Emissions at 100 % load (Correlation 5 % O2)
NOX mg/Nm³ < 4250
ppm < 2625
CO mg/Nm³ < 4250
ppm < 3400
Reference gas mixing unit: RMG 985a-100/90 and ignition system IC 100
The technical data are based on natural gas with a calorific value of 10 kWh/Nm³ and a methane no. > 80
The technical data indicated is based on standard conditions acc to DIN ISO 3046-1
Standard conditions: Atmospheric pressure absolute: 100 kPa
Air temperature 25 °C
Relative air humidity 30 %
Rating adaptation at ambient conditions acc to DIN ISO 3046-1
The tolerance for the specific fuel consumption is + 5 % at rated output
The tolerance for the usable heat is 7 % at rated output
The coolant data are based on a 40 % portion of antifreeze
Page 7
Natural Gas Engine E 2876 E 312 03 / 2011
Preliminary Technical Data
RATING DATA 60 Hz
λ = 1.00 ENGLISH
Load % 100 75 50
Ignition timing °BTDC 20 20 20
ISO standard rating Btu/min 9668 7251 4834
Coolant heat Btu/min 8246 7040 5687
Exhaust heat up to 248 °F Btu/min 5554 4323 3109
Radiation heat max. Btu/min 1024
Energy input Btu/min 25512 20141 15039
Fuel consumption Btu/bhp-hr 6714 7068 7916
Efficiency
mechanical % 38,0 36,0 32,2
thermal % 54,1 56,4 58,5
total % 92,1 92,4 90,7
Mass flows
Combustion air lb/hr 1198 969 724
Fuel lb/hr 72 57 43
Exhaust gas mass flow rate, wet lb/hr 1271 1026 766
Temperatures
Exhaust gas temperature °F 1148 1130 1112
Emissions at 100 % load (Correlation 15 % O2)
NOX g/bhp-hr < 10,6
ppm < 776
CO g/bhp-hr < 10,6
ppm < 1275
Reference gas mixing unit: RMG 985a-100/90 and ignition system IC 100
The technical data are based on natural gas with a calorific value of 970 Btu/cu ft and a methane no. > 80
The technical data indicated is based on standard conditions acc to DIN ISO 3046-1
Standard conditions: Atmospheric pressure: 14,5 psi or 328 ft above sea level
Air temperature 77 °F
Relative air humidity 30 %
Rating adaptation at ambient conditions acc to DIN ISO 3046-1
The tolerance for the specific fuel consumption is + 5 % at rated output
The tolerance for the usable heat is 7 % at rated output
The coolant data are based on a 40 % portion of antifreeze
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Natural Gas Engine E 2876 E 312 03 / 2011
Resistance Curve of Engine
METRIC
1,8
1,6
1,4
1,2
Pressure loss (bar)
0,8
0,6
0,4
0,2
0
0 100 200 300 400 500 600
Volume flow (l/min)
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Natural Gas Engine E 2876 E 312 03 / 2011
Resistance Curve of Engine
ENGLISH
24
22
20
18
16
14
Pressure loss (psi)
12
10
0
0 20 40 60 80 100 120 140 160
Volume flow (U.S. gal/min)
