John Deere IDLC125-3J ENGINE PERFORMANCE CURVE
ENGINE PERFORMANCE CURVE
PowerTech ETM 6.8L Engine
Model: 6068HF285
Rating: Gross Power
Application: Generator (60 Hz)
Target: 125 kWe Standby Market
Nominal Engine Power @ 1800 RPM
Prime Standby
HP kW HP kW
180 134 197 147
Generator
Efficiency
%
88-92 10.9 8.1 0.8 111-116 139-145 122-128 153-160 100%
Note 1: Based on nominal engine power.
Note 2: kWe / kVA rating assumes 90% efficiency. “Generator Efficiency %” will vary.
Fan Power
(6% of S tandby)
hp kW kWe kVA kWe kVA
Power
Factor
Prime Rating
- PRIME - STANDBY
70
(32)
50
(23)
Standby Rating
2
1,2
ISO 8528 G2
Block Load
Capability
180 hp (134 kW) Prime
197 hp (147 kW) Standby
[See Option Code Tables]
STANDARD CONDITIONS
Air Intake Restriction...................12 in.H2O (3 kPa)
Exhaust Back Pressure........... 30 in.H
Gross power guaranteed within + or - 5% at SAE J1995
and ISO 3046 conditions:
77 °F (25 °C) air inlet temperature
29.31 in.Hg (99 kPa) barometer
104 °F (40 °C) fuel inlet temperature
0.853 fuel specific gravity @ 60 °F (15.5 °C)
Conversion factors:
Power: kW = hp x 0.746
Fuel: 1 gal = 7.1 lb, 1 L = 0.85 kg
Torque: N•m = lb-ft x 1.356
All values are from currently available data and are subject
to change without notice.
Notes:
All OEM Gen Set Engine Applications must be prescreened for torsional vibration compatibility with the
respective alternator end hardw are.
OEM Engine Application Engineering will perform this
computer-based analysis work upon request.
O (7.5 kPa)
2
30
(14)
Fuel -- lb/hr (kg/hr)
20
(15)
60
(45)
100
(75)
140
(104)
180
(134)
Brake Power -- hp (kW)
220
(164)
260
(190)
300
(224)
Tier-3 Emission Certifications:
CARB; EPA
Ref: Engine Emission Label
* Revised Data
Curve 6068HF2851800197 .............................Sheet 1 of 2
Certified by:
June 2007
Engine Performance Curves 6068 - Generator June 2007
General Data
Model...............................................................6068HF285
Number of Cylinders .........................................................6
Bore and Stroke--in. (mm)..............4.19 x 5.00 (106 x 127)
Displacement--in.
3
(L)...........................................415 (6.8)
Compression Ratio.................................... ............ ...19.0:1
Valves per Cylinder--Intake/Exhaust..... ....................... 1 / 1
Firing Order.......................................................1-5-3-6-2-4
Combustion System.......................................Unit Injection
Engine T ype................................ ............. ...In-line, 4-Cycle
Aspiration......................................................Turbocharged
Charge Air Cooling System...................................Air-to-Air
Engine Crankcase Vent System .............. ............ ......Open
Physical Data
Length--in. (mm) ...............................................44.2 (1123)
Width--in. (mm) ...................................................25.9 (657)
Height--in. (mm)................................................40.8 (1036)
Weight, with oil--lb (kg).......................................1340 (608)
(Includes flywheel hsg., flywheel & electrics)
Center of Gravity Location (Estimated based on Tier 2)
From Rear Face of Block (X-axis)--in. (mm).14.5 (369)
Right of Crankshaft (Y-axis)--in. (mm) ................0.1 (3)
Above Crankshaft (Z-axis)--in. (mm) ..............6.1 (154)
Max. Allow. Static Bending Moment at Rear
Face of Flywhl Hsg w/ 5-G Load--lb-ft (N•m) ..600 (814)
Thrust Bearing Load Limit --lb (N) Forward
Rearward
Intermittent............................899 (4000).....450 (2000)
Continuous ...........................495 (2200).....225 (1000)
Max. Front of Crank. Torsional Vibration--DDA............0.25
Max. Continuous Damper Temp--°F (°C)............... 180 (82)
Electrical System
12 Volt 24 Volt
Min. Battery Capacity (CCA)--amp............800............570
Max. Allow. Start. Circ’t Resist.--Ohm..0.0012 ......... 0.002
Starter Rolling Current:
At 32 °F ( 0 °C)--amp.............. ............. .920............ 600
At -22 °F (-30 °C)--amp.......................1300 ............ 700
Min. Volts at ECU while Cranking--v o l ts.........6 .............. 10
Max. ECU Temperature--°F (°C)..................221 (105)
Max. Harness Temperature--°F (°C)............248 (120)
Maximum Voltage From Engine Crankshaft/
Generator Shaft to Ground--VAC........... 0.15..........0.15
Air System
Prime Standby
Max. Allowable Temp Rise--Ambient Air to
Engine Inlet--°F (°C).....................................15 (8)
Maximum Air Intake Restriction
Dirty Air Cleaner--in.H
Clean Air Cleaner--in.H
Engine Air Flow--ft
O (kPa)...............25 (6.25)
2
O (kPa).............15 (3.75)
3
2
/min (m3/min) ....388 (11.0)..410 (11.6)
Air Cleaner Efficiency--%.................................99.9
Engine Installation Criteria
Charge Air Cooling System Prime Standby
Air/Air Exchanger Heat Rejection--
BTU/min (kW)
Compress. Dischrg. Temp.(Rated)
@ 77 °F (25°C) Amb. Air--°F (°C)300(149)....324(162)
Compress. Dischrg. Temp.(Max.)
@ 47°C amb. and
80 kPa bar.--°F (°C)......................NA (NA).....NA (NA)
Press. Drop, thru CAC--in.H
Max. ........................................................52 (13)
Min. ...........................................................32 (8)
Intake Manifold Pressure--psi (kPa) ....19(128).....21 (143)
CAC Out Temp @ 77°F (25°C) Amb.--°F (°C)
Max. ........................................................140 (60)
Min. .........................................................118 (48)
CAC Out Temp @ any Ambient--°F (°C)
Max..........................................................190 (88)
Cooling System
Engine Heat Reject.--BTU/min (kW)....NA(NA) .. 4758 (83.6)
Coolant Flow--gal/min (L/min)..............48(180)......48(180)
Thermostat Start to Open--°F (°C)...............180 (82)
Thermostat Fully Open--°F (°C)...................203 (95)
Engine Coolant Capacity--qt (L).................13 (11.9)
Min. Pressure Cap--psi (kPa) ...................14.5 (100)
Max. Top Tank Temp--°F (°C) ....................230 (110)
Min. Coolant Fill Rate--gal/min (L/min)............3 (11)
Min. Air-to-Boil Temperat ure--°F (°C) ..........117 (47)
Min. Pump Inlet Pressure--psi (kPa).............4.4 (30)
Exhaust System
Exhaust Flow--ft3/min (m3/min)........964 (27.3).1031(29.2)
Exhaust Tem perat ure--°F (°C) ...........916(491)...945 (507)
Max. Exhaust Restriction----in. H
Min. Exhaust Restriction----in. H
Max. Bend. Moment, Turbo Out.--lb-ft (N•m) .5.2 (7.0)
Max. Shear on Turbo Outlet--lb (kg)................24 (11)
Fuel System
ECU Description...................................L16 Controller
Fuel Injection Pump .................................Denso HP3
Governor Type............................................Electronic
Total Fuel Flow--lb/hr (kg/hr)...........153(69.4).....168(76.3)
Fuel Consumption--lb/hr (kg/hr)........64(28.9)......70 (31.8)
Max. Fuel Inlet Temp.--°F (°C).......................176 (80)
Fuel Temp. Rise, Inlt to Retrn--°F (°C)72(40).......79.2(44)
Max. Fuel Inlet Restriction--in. H
Max. Fuel Inlet Pressure--in. H
Max. Fuel Return Pressure--in. H
................................... 1042(18.3) .. 1229 (21.6)
O (kPa)
2
Prime Standby
Prime Standby
O (kPa)......30 (7.5)
2
O (kPa)...........None
2
Prime Standby
O (kPa) .......80 (20)
2
O (kPa)........NA (NA)
2
O (kPa)......80 (20)
2
Lubrication System Prime Standby
Oil Press. at Rated Speed--psi (kPa).. 44(300).....44 (300)
Min. Oil Pressure--psi (kPa)...........................15 (105)
Max. Oil Carryover in Blow-by--lb/hr (g/hr) 0.002 (1.0)
Max. Airflow in Blow-by--gal/min (l/min).........34 (130)
Max. Crankcase Pressure--in. H
Performance Data
O (kPa).........2 (0.5)
2
Prime Standby
Rated Power--hp (kW)...................180 (134)......197 (147)
Rated Speed--rpm ................................ 1800............. 1800
Low Idle Speed--rpm .............................1150..............1150
Rated Torque--lb-ft (N•m).............1157 (853)....1273 (939)
BMEP--psi (kPa)..........................229 (1577)....252 (1735)
Friction Power
@ Rated Speed--hp (kW) ..............23 (17)..........23 (17)
Altitude Capability--ft (m)
............. 10,000(3050) ...10,000(3050)
Ratio--Air : Fuel....................................25 : 1............24 : 1
Smoke @ Rated Speed--Bosch No......... 0.7................ 1.2
Noise--dB(A) @ 1 m ..............................88.4..............88.8
Fuel Consumption -- lb/hr ( k g/h)
Prime Standby
25 % Power .................................20.0 (9.1)........21.6 (9.8)
50 % Power ...............................38.1 (17.3)......40.8 (18.5)
75 % Power ...............................51.0 (23.1)......55.1 (25.0)
100 % Power .............................63.7 (28.9)......70.5 (32.0)
All values at rated speed and power with standard options unless otherwise noted.
* Revised Data
Curve 6068HF2851800197................................ Sheet 2 of 2
June 2007
Engine Performance Curves 6068 - Generator June 2007
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