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

Engine Installation Criteria

Cooling System

Engine Heat Rejection 77.8 kW 4428 BTU/min
Engine Radiated Heat kW
Coolant Flow 160 L/min 42 gal/min
Thermostat Start to Open 82 °C 180 °F
Thermostat Fully Open 95 °C 203 °F
Engine Coolant Capacity 11.9 Liter 12.6 quart
Min. Coolant Fill Rate 11 L/min 2.9 gal/min
Min. Pressure Cap 100 kPa 15 psi
Min. Pump Inlet Pressure @203°F (95°C) Coolant 30 kPaa 4 psia
Max. External Coolant Restriction 20 kPa 3 psi
Max. Top Tank Temperature 110 °C 230 °F
Max. Top Tank Temperature 95% of Operating Hours 100 °C 212 °F
Min. Limiting Ambient Temperature 47 °C 117 °F

Exhaust System

Exhaust Flow 30.1 m³/min 1063 ft.³/min
Exhaust Temperature 600 °C 1112 °F
Max. Allowable Exhaust Restriction 7.5 kPa 30 in. H2O
Max. Bending Moment on Turbo Outlet 7.0 N·m 5.2 lb-ft
Max. Shear on Turbine Outlet 11 kg 24 lb

Fuel System

ECU Description L 16 Controller
Fuel Injection Pump Denso HP3
Governor Type Electronic
Governor Regulation 0
Total Fuel Flow kg/hr
Fuel Consumption 41.4 kg/hr 91.3 lb/hr
Fuel Temperature Rise, Inlet to Return 45 ∆°C 81 ∆°F
Max. Fuel Inlet Restriction 20 kPa 80 in. H2O
Min. Fuel Inlet Pressure 7.6 kPa 30 in. H2O
Max. Fuel Inlet Pressure 20 kPa 80 in. H2O
Max. Fuel Return Pressure 20 kPa 80 in. H2O
Max. Fuel Inlet Temperature 80 °C 176 °F
Fuel Filter @98% Efficiency 2 mic

Lubrication System

Oil Pressure at Rated Speed 273 kPa 40 psi
Oil Pressure at Low Idle 105 kPa 15 psi
Max. Oil Carryover in Blow-By 1.0 g/hr 0.002 lb/hr
Max. Airflow in Blow-By 130 L/min 34.3 gal/min
Max. Crankcase Pressure 0.5 kPa 2 in. H2O

Air Intake System

Engine Air Flow m³/min
Air Mass Flow 813 kg/hr 1792 lb/hr
Maximum Allowable Temperature Rise, Ambient Air to

Engine Inlet
Max. Air Intake Restriction, Clean Air Cleaner 3.75 kPa 15.0 in. H2O
Max. Air Intake Restriction, Dirty Air Cleaner 6.25 kPa 25.0 in. H2O
Air Cleaner Efficiency 99.9 %

8 ∆°C 15 ∆°F

Performance Data

Rated Power, Prime 184 kW 247 HP
Rated Power, Standby 202 kW 271 HP
Rated Speed 1500 rpm
Rated Torque, Prime 1288 N·m 950 lb-ft
BMEP, Prime 2384 kPa 346 psi
Altitude Capability 3000 m 9843 ft
Friction Power @Rated Speed kW
Air:Fuel Ratio 19.94 : 1

Smoke @Rated Speed
Noise @1 m 97.3 dB(A)

0-100% Standby Load Acceptance sec
Load Acceptance, ISO 8528-5 G3

Fuel Consumption

25 % Power 25.8 11.7 28.2 12.8
50 % Power 48.3 21.9 52.7 23.9
75 % Power 70.5 32.0 77.2 35.0

100 % Power 86.9 39.4 91.3 41.4

lb/hr kg/h lb/hr kg/h

Prime Standby

Bosch
No.

Performance Curve: 6068HFG82_B15

Engine Performance Curves 6068 - Generator Sheet 3 - July 2013