John Deere 6068HFG06 6.8L Generator Drive Engine
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All Product Lines / John Deere Products / Engines and Drivetrain / Generator Drive Engines / Prime Power / Final Tier 4 / 6068HFG06 6.8L Generator Drive Engine
6068HFG06 6.8L Generator Drive Engine Model Photo

 

Features

DOC/SCR aftertreatment

  • These engines use diesel oxidation catalyst (DOC) and selective catalytic reduction (SCR) technology to meet Final Tier 4 emission regulations. They meet customer performance without the need for a diesel particulate filter (DPF).

Big engine durability

  • Heavy-duty components that are usually found in our larger engines are used throughout our generator drive engine line. Many of our DOC/SCR engines feature top-liner cooling, steel pistons, and variable-speed fan drives.

Series turbocharger

  • Fresh air is first drawn into the low-pressure turbocharger (fixed geometry) and compressed to a higher pressure. The compressed air is then drawn into the high-pressure turbocharger (VGT or WGT), where the air is further compressed. The high-pressure air is then routed through a charge air cooler and into the engine's intake manifold. By splitting the work between two turbochargers, both can operate at peak efficiency and at slower rotating speeds —lowering stress on turbocharger components and improving reliability. Series turbocharging delivers more boost pressure than single turbocharger configurations which results in higher power density, improved low-speed torque, and improved high altitude operation.

Cooled exhaust gas recirculation (EGR)

  • EGR cools and mixes measured amounts of cooled exhaust gas with incoming fresh air to lower peak combustion temperatures, thereby reducing NOx

High-pressure common-rail (HPCR) and engine control unit (ECU)

  • The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures up to 2,500 bar (36,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of injection.

4-valve cylinder head

  • The 4-valve cylinder head provides excellent airflow resulting in greater low-speed torque and better transient response time by utilizing a cross-flow design.

Air-to-air aftercooled

  • This is the most efficient method of cooling intake air to help reduce engine emissions while maintaining low-speed torque, transient response time, and peak torque. It enables an engine to meet emissions regulations with better fuel economy and the lowest installed costs.

Compact size

  • Lower installed cost
  • Mounting points are the same as previous engine models

John Deere electronic engine controls

  • Enables low idle speed for reduced fuel consumption
  • Enables switching between 1500 and 1800 RPM without reprogramming
  • Single engine control unit (ECU) manages both the engine and the aftertreatment systems
  • Premium software option integrates with equipment or vehicles to reduce engineering and installation costs

Additional features

  • Low idle speeds
  • Dual frequency (1500/1800 rpm)
  • Glow plugs
  • 500-hour oil change
  • Self-adjusting poly-vee fan drive
  • Optional factory installed variable-speed fan drive improves fuel economy and reduces noise levels
  • RH and LH engine mounted fuel filters
  • Replaceable (wet) cylinder liners with directed top liner cooling
  • Low-pressure fuel system with electrical transfer pump and "auto-prime" feature

Emissions Certifications

EPA Final Tier 4  

General engine data

Model 6068HFG06
Number of cylinders 6
Displacement-- L (cu in) 6.8 (415)
Bore and Stroke-- mm (in) 106 x 127 (4.17 x 5.00)
Compression Ratio 16.7 : 1
Engine Type In-line, 4-cycle
Aspiration Turbocharged and air-to-air aftercooled
Length - mm (in) 1140 (44.9)
Width-- mm (in) 780 (30.7)
Height-- mm (in) 1205 (47.4)
Weight, dry - kg (lb) 785 (1731)

DOC Dimensions

Size 5 - Diameter - mm (in) 259.3 (10.2)
Size 5 - Length - mm (in) 572.9 (22.6)
Size 5 - Weight - kg (lb) 23.5 (51.8)

SCR Catalyst Dimensions

Size 5 - Diameter -mm(in) 356 (14.0)
Size 5 - Weight -kg(lb) 47.2 (104.1)
Size 5 - Length -mm(in) 784.9 (30.9)

Performance data range

Hz (rpm) 60 ( 1800 )
Generator Efficiency % 89-94
Power Factor 0.8
Engine power - Prime kW 197-220
Engine power - Prime hp 264-295
Engine power - Standby kW 216-241
Engine power - Standby hp 290-323
Rated Fan Power - kW 6.5-7.2
Rated Fan Power - hp 8.7-9.7
Calculated generator set output - Prime kWe 170-200
Calculated generator set output - Prime kVA 212-250
Calculated generator set output - Standby kWe 186-220
Calculated generator set output - Standby kVA 233-275

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