6068HFG08 | Generator Drive Engine

Features

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VARIABLE GEOMETRY TURBOCHARGER (VGT)

Varies exhaust pressure based on load and speed to ensure proper EGR flow. The combination of the cooled EGR and VGT provide low-speed torque, quicker transient response, higher-peak torque, and world-class fuel economy.

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.

EXHAUST FILTERS

This system is the Best Available Control Technology (BACT) for particulates that delivers premium block load acceptance characteristics and utilize a catalyzed exhaust filter that contains a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF). The DOC reacts with exhaust gases to reduce carbon monoxide, hydrocarbons, and some particulate matter (PM). The downstream DPF traps and holds the remaining PM. Trapped particles are oxidized within the DPF through a continuous cleaning process called passive regeneration. Passive regeneration occurs during normal operating conditions when heat from the exhaust stream and catalysts within the exhaust filter trigger the oxidation of the trapped PM. If passive regeneration cannot be achieved due to low temperature, load, or speed, then PM is removed using active regeneration — an automatic cleaning process controlled by the exhaust temperature management system.

SELECTIVE CATALYTIC REDUCTION (SCR)

John Deere engines feature an SCR system that utilizes a urea-based additive, sometimes referred to as diesel exhaust fluid (DEF). The ammonia in the urea reacts with engine exhaust gases in the SCR catalyst to reduce NOx — converting it to nitrogen and water vapor.

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

Faster engine control unit (ECU) manages both the engine and the exhaust filter
Premium software option integrates with equipment or vehicles to reduce engineering and installation costs
Electronic engine controls can be engine or remote mounted

ADDITIONAL FEATURES

Glow plugs
Gear-driven auxiliary drives
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 final fuel filters
Replaceable (wet) cylinder liners
Low-pressure fuel system with electrical transfer pump and "auto-prime" feature
Big-engine durability

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Specifications

John Deere

6068HFG08

6.8L Generator Drive Engine

EPA Tier 4	CARB

Model

6068HFG08

Number of cylinders

Displacement-- L (cu in)

6.8 (415)

Bore and Stroke-- mm (in)

106 x 127 (4.17 x 5.00)

Compression Ratio

17.2 : 1

Engine Type

In-line, 4-Cycle

Aspiration

Turbocharged and air-to-air aftercooled

Length - mm (in)

1140 (44.9)

Width-- mm (in)

720 (28.3)

Height-- mm (in)

1315 (51.8)

Weight, dry - kg (lb)

770 (1698)

Size 2 - Diameter - mm (in)

259.3 (10.2)

Size 2 - Length - mm (in)

822.7 (32.4)

Size 2 - Weight - kg (lb)

40.8 (89.9)

Size 3 - Diameter -mm(in)

356 (14.0)

Size 3 - Weight -kg(lb)

47.2 (104.1)

Size 3 - Length -mm(in)

784.9 (30.9)

Hz (rpm)

60 ( 1800 )

Generator Efficiency %

89-93

Power Factor

0.8

Engine power - Prime kW

136-164

Engine power - Prime hp

182-219

Engine power - Standby kW

150-180

Engine power - Standby hp

200-241

Rated Fan Power - kW

9.0-10.8

Rated Fan Power - hp

12.1-14.5

Calculated generator set output - Prime kWe

114-143

Calculated generator set output - Prime kVA

142-179

Calculated generator set output - Standby kWe

125-157

Calculated generator set output - Standby kVA

156-196

6068HFG086.8L Generator Drive Engine

Features

VARIABLE GEOMETRY TURBOCHARGER (VGT)

COOLED EXHAUST GAS RECIRCULATION (EGR)

EXHAUST FILTERS

SELECTIVE CATALYTIC REDUCTION (SCR)

HIGH-PRESSURE COMMON-RAIL (HPCR) AND ENGINE CONTROL UNIT (ECU)

4-VALVE CYLINDER HEAD

AIR-TO-AIR AFTERCOOLED

COMPACT SIZE

JOHN DEERE ELECTRONIC ENGINE CONTROLS

ADDITIONAL FEATURES

Specifications

Specifications

Emissions certifications

General engine data

DOC/DPF Dimensions

SCR Catalyst Dimensions

Performance data range

Resources

Resources

Confidence is Built In

Backed by a powerful support network

Warranty

6068HFG086.8L Generator Drive Engine

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Features

Specifications

Specifications

Emissions certifications

General engine data

DOC/DPF Dimensions

SCR Catalyst Dimensions

Performance data range

Related Products

Resources

Resources

Confidence is Built In

Backed by a powerful support network

Warranty