6068HFC08

Features

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READY TO RUN. STAGE V.

John Deere is ready to work, ready to generate, and ready to run with engines meeting EU Stage V emissions regulations. This means OEM customers currently using a John Deere engine with a diesel particulate filter (DPF) won’t have to re-engineer their machines to meet the requirements of Stage V regulations. John Deere has been using DPF technology since Interim Tier 4/Stage III B and is well positioned to help customers transition to the EU’s Stage V standard. We have extensive experience with the development and integration of DPFs in both John Deere and OEM equipment, with more than 425 million DPF hours in the field.*

* Data compiled September 2016

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

These engines 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. Engines below 130 kW (174 hp) use an in-cylinder dosing system for active regeneration, while larger engines use an external dosing 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 mixes 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 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 models

ENGINE PERFORMANCE

Multiple rated speeds to further reduce noise and improve fuel economy
Low-speed (1000 rpm) torque equal to or better than Tier 4/Stage III B
Optional power bulge equal to or better than Tier 4/Stage III B

JOHN DEERE ELECTRONIC ENGINE CONTROLS

Faster engine control unit (ECU) manages both the engine and the aftertreament system
Four times the memory, twice the RAM and double the processing speed
The input/output capability has increased 40%
Premium software option integrates with equipment or vehicles to reduce engineering and installation costs

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
R.H. and L.H. engine-mounted final fuel filters
Aluminum piston with integrated oil cooled gallery
Low-pressure fuel system with electrical transfer pump and "auto-prime" feature

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Specifications

John Deere

6.8L Industrial Diesel Engine

CARB

EPA Tier 4

EU Stage IV

Model

6068HFC08

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)

1160 (45.7)

Width-- mm (in)

720 (28.3)

Height-- mm (in)

1350 (53.1)

Weight, dry - kg (lb)

770 (1698)

Size 3 - Diameter - mm (in)

246.6 (9.7)

Size 3 - Length - mm (in)

579.6 (22.8)

Size 3 - Weight - kg (lb)

30.8 (67.9)

Size 4 - Diameter - mm (in)

259.3 (10.2)

Size 4 - Length - mm (in)

692.2 (27.3)

Size 4 - Weight - kg (lb)

33.6 (74.1)

Size 3 - Diameter -mm(in)

318 (12.5)

Size 3 - Weight -kg(lb)

34 (75.0)

Size 3 - Length -mm(in)

638 (25.1)

Size 4 - Diameter - mm(in)

318 (12.5)

Size 4 - Weight - kg (lb)

39 (86.0)

Size 4 - Length - mm(in)

750.9 (29.6)

Intermittent - Rated power/Rated speed

168-187 kW (225-250 hp) @2000-2400 rpm

Intermittent - Peak power

185-190 kW (248-255 hp) @1800-2200 rpm

Intermittent - Power bulge

2-10 % @1800-2200 rpm

Intermittent - Peak torque

1000 N·m (738 ft-lb) @1600 rpm

Intermittent - Torque rise

25-34%

Heavy Duty - Rated power/Rated speed

149-168 kW (200-225 hp) @2000-2400 rpm

Heavy Duty - Peak power

164-168 kW (220-225 hp) @1800-2400 rpm

Heavy Duty - Power bulge

0-10 % @1800 rpm

Heavy Duty - Peak torque

900-963 N·m (664-710 ft-lb) @1600 rpm

Heavy Duty - Torque rise

35%

Continuous - Rated power/Rated speed

104-149 kW (139-200 hp) @2200-2400 rpm

Continuous - Peak power

106-149 kW (142-200 hp) @2100-2400 rpm

Continuous - Power bulge

0-2 % @2000 rpm

Continuous - Peak torque

613-800 N·m (452-590 ft-lb) @1600 rpm

Continuous - Torque rise

35-36%

6068HFC086.8L Industrial Diesel Engine

Features

READY TO RUN. STAGE V.

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

ENGINE PERFORMANCE

JOHN DEERE ELECTRONIC ENGINE CONTROLS

ADDITIONAL FEATURES

Specifications

Add Model

Specifications

John Deere

6068HFC08

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

Resources

Warranty

Safety

Manuals

6068HFC086.8L Industrial Diesel Engine

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Features

READY TO RUN. STAGE V.

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

ENGINE PERFORMANCE

JOHN DEERE ELECTRONIC ENGINE CONTROLS

ADDITIONAL FEATURES

Specifications

Add Model

Specifications

John Deere

6068HFC08

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

Resources

Warranty

Safety

Manuals