JOHN-DEERE 6068HFG82 Service Manual
Generator
Efficiency %
88-92 20.5 15.3 0.8 148-155 186-194 164-172 205-215
Note 1: Based on nominal engine power.
Fan Power
(% of Standby)
hp kW kWe kVA kWe kVA
ENGINE PERFORMANCE CURVE
Rating:
Application:
Nominal Engine Power @ 1500 RPM
Prime Standby
HP kW HP kW
247 184 271 202
Power Factor
Gross Power
Generator
200 kVA Prime Market; Bare Engine (G)
1500 RPM (50 Hz)
Prime Rating Standby Rating
PowerTech™ E 6.8L Engine
Model:6068HFG82
247 hp (184 kW) Prime
271 hp (202 kW) Standby
STANDARD CONDITIONS
______________________
Air Intake Restriction......................................12 in.H2O (3 kPa)
Exhaust Back Pressure...............................30 in.H2O (7.5 kPa)
Gross power guaranteed within + or - 5% at SAE
J1995 and ISO 3046 conditions:
Conversion factors:
All values are from currently available data and are subject
to change without notice.
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)
Power: kW = hp x 0.746
Fuel: 1 gal = 7.1 lb, 1 L = 0.85kg
Torque: N·m = lb-ft x 1.356
Notes:
Designed/Calibrated to meet: Certified by:
• EPA Tier 3
• EU Stage III A
Ref: Engine Emission Label
Performance Curve: 6068HFG82_B15
Engine Performance Curves 6068 - Generator July 2013
Engine Installation Criteria
General Data
Model 6068HFG82
Number of Cylinders 6
Bore 106 mm 4.2 in.
Stroke 127 mm 5.0 in.
Displacement 6.8 L 415 in.³
Compression Ratio 19.0:1
Valves per Cylinder, Intake/Exhaust 1 / 1
Firing Order 1-5-3-6-2-4
Combustion System HPCR
Engine Type In-line, 4-cycle
Aspiration
Engine Crankcase Vent System Open
Turbocharged and air-to-
air aftercooled
Physical Data
Length 1123 mm 44.2 in.
Width 657 mm 25.9 in.
Height 1036 mm 40.8 in.
Weight, with oil &no coolant (Includes engine, flywheel
housing, flywheel &electrics)
Center of Gravity Location, X-axis From Rear Face of
Block
Center of Gravity Location, Y-axis Right of Crankshaft mm
Center of Gravity Location, Z-axis Above Crankshaft mm
Max. Allowable Static Bending Moment At Rear Face of
Flywheel Housing with 5-G Load
Thrust Bearing Load Limit Forward, Intermittent 4000 N 899 lb
Thrust Bearing Load Limit Forward, Continuous 2200 N 495 lb
Thrust Bearing Load Limit Rearward, Intermittent 2000 N 450 lb
Thrust Bearing Load Limit Rearward, Continuous 1000 N 225 lb
Max. Continuous Damper Temp 82 °C 180 °F
Max. Torsional Vibration, Front of Crank 0.25 DDA
608 kg 1340 lb
mm
814 N·m 600 lb-ft
Electrical System
Recommended Battery Capacity, 12V @32 °F (0 °C) 800 amps
Recommended Battery Capacity, 24V @32 °F (0 °C) 570 amps
Starter Rolling Current, 12V @32 °F (0 °C) 920 amps
Starter Rolling Current, 24V @32 °F (0 °C) 600 amps
Starter Rolling Current, 12V @-22 °F (-30 °C) 1300 amps
Starter Rolling Current, 24V @-22 °F (-30 °C) 700 amps
Min. Voltage at ECU during Cranking, 12V 6 volts
Min. Voltage at ECU during Cranking, 24V 10 volts
Max. Allowable Start Circuit Resistance, 12V 0.0012 Ohm
Max. Allowable Start Circuit Resistance, 24V 0.002 Ohm
Max. Voltage From Engine to Crankshaft, 12V 0.15 volts
Max. Voltage From Engine to Crankshaft, 24V 0.15 volts
Max. ECU Temperature 105 °C 221 °F
Max. Harness Temperature 120 °C 248 °F
Max. Alternator Temperature 120 °C 248 °F
Max. Starter Temperature 120 °C 248 °F
Max. Temperature, All Other Electronics 125 °C 257 °F
Charge Air Cooling System
Air-to-Air Heat Rejection 30.6 kW 1742 BTU/min
Intake Manifold Pressure 169 kPa 24.5 psi
Compressor Discharge Temperature @77°F(25°C)
Ambient Air
Max. Temperature Out of Charge Air Cooler @All Ambient
Conditions
Intake Manifold Temperature at which Power De-rate
Occurs
Intake Manifold Temperature at which Severe Power De-
rate Occurs
Max. CAC System Volume 20.4 Liter 22 quart
Max. Pressure Drop through CAC 13 kPa 52.0 in. H2O
Max. Temperature Out of Charge Air Cooler @77°F
(25°C) Ambient Air
180 °C 356 °F
88 °C 190 °F
89.5 °C 193 °F
91 °C 195.8 °F
45 °C 113 °F
Performance Curve: 6068HFG82_B15
Engine Performance Curves 6068 - Generator Sheet 2 - July 2013
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