6068HF485

6.8L Industrial Diesel Engine

Features

4-valve cylinder head

The 4-valve cylinder head provides excellent airflow resulting in greater low-speed torque and better transient response.

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 1600 bar (23,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of the injection

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

Variable geometry turbocharger (VGT)

Varies exhaust pressure based on load and speed to insure proper EGR flow; greater low-speed torque, quicker transient response, higher peak torque, and best-in-class fuel economy.

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

Engine performance

John Deere electronic engine controls

Electronic engine controls monitor critical engine functions, providing warning and/or shutdown to prevent costly engine repairs and eliminate the need for add-on governing components all lowering total installed costs. Snapshot diagnostic data that can be retrieved using commonly available diagnostic service tools
Controls utilize new common wiring interface connector for vehicles or available OEM instrumentation packages; new solid conduit and "T" connectors to reduce wiring stress and provide greater durability and improved appearance
Factory-installed, engine mounted ECU or remote-mounted ECU comes with wiring harness and associated components. Industry-standard SAE J1939 interface communicates with other vehicle systems, eliminating redundant sensors and reducing vehicle installed cost

Additional features

Model	6068HF485
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	17.0 : 1
Engine Type	In-line, 4-Cycle
Aspiration	Turbocharged and air-to-air aftercooled
Length - mm (in)	1161 (45.7)
Width-- mm (in)	616 (24.3)
Height-- mm (in)	1128 (44.4)
Weight, dry - kg (lb)	678 (1495)

Intermittent - Rated power/Rated speed	205 kW (275 hp) @2000-2400 rpm
Intermittent - Peak power	168-206 kW (225-276 hp) @1800-2200 rpm
Intermittent - Power bulge	0-4 % @1800 rpm
Intermittent - Peak torque	1025 N·m (756 ft-lb) @1400 rpm
Intermittent - Torque rise	26-32%
Heavy Duty - Rated power/Rated speed	144-168 kW (193-225 hp) @2000-2200 rpm
Heavy Duty - Peak power	153-181 kW (205-243 hp) @1600-2000 rpm
Heavy Duty - Power bulge	6-8 % @1700-2000 rpm
Heavy Duty - Peak torque	934 N·m (689 ft-lb) @1400 rpm
Heavy Duty - Torque rise	28-36%
Continuous - Rated power/Rated speed	134-168 kW (180-225 hp) @2000-2400 rpm
Continuous - Peak power	137-168 kW (184-225 hp) @1600-2400 rpm
Continuous - Power bulge	0-3 % @1600 rpm
Continuous - Peak torque	838 N·m (618 ft-lb) @1400 rpm
Continuous - Torque rise	26-31%