John Deere 6068AFM85 Constant-Speed Auxiliary & Generator Engine

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All Product Lines / John Deere Products / Engines and Drivetrain / Marine Engines / Constant-Speed Auxiliary & Generator Engines / 6068AFM85 Constant-Speed Auxiliary & Generator Engine

6068AFM85 Constant-Speed Auxiliary & Generator Engine Model Photo

Features
Specs

Features

Optional low rpm operation

A lower speed option provides the user the ability to start the engine without going to the gen-set rated speed and allows the user to clutch in an accessory that may be driven by the engine.

4-valve cylinder head

Excellent airflow through 4-valve cylinder head delivers greater low-speed torque and better transient response time.

High pressure common-rail (HPCR)

The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures. It also controls fuel injection timing and provides precise control for the start, duration, and end of injection. Electronic transfer pump is self-priming for ease of maintenance. Provides high performance, excellent fuel economy, and low emissions.

Water-cooled exhaust manifold

Integrated components eliminate external hoses and fittings. Wet exhaust manifold creates a cooler and quieter environment for passengers and crew.

Replaceable cylinder liners

Replaceable wet-type cylinder liners are precision-machined and hardened for long life. Allows engine to be rebuilt to original specifications.

Electronic engine control unit (ECU)

Advanced fault code diagnostics and customizable engine protections ensure reliability and uptime. Provides highly customizable features and trim to integrate your vessel.

Keel-cooled or heat exchanger

Closed cooling system in keel-cooled engine option eliminates the need for a sea strainer, seawater pump, or anodes. Heat exchanger option offers a lighter, more compact, and simpler engine installation.

Multiple service options

Either-side oil fill/dipstick combinations and remote oil and fuel filter options are available for easier service access.

Emissions Certifications

IMO Tier 2
China Stage II

General Data (based on standard option configuration)

Model	6068AFM85
Number of cylinders	6
Displacement-- L (cu in)	6.8 (415)
Bore and Stroke-- mm (in)	118 x 136 (4.65 x 5.35)
Engine Type	In-line, 4-cycle
Aspiration	Turbocharged and air-to-coolant aftercooled
Length - mm (in)	1685 (66.3)
Width Maximum - mm (in)	1027 (40.4)
Length to rear face of flywheel housing - mm (in)	1415 (55.7)
Flywheel housing SAE	2
Height - mm (in)	983 (38.7)
Height, crankshaft centerline to top - mm (in)	664 (26.1)
Height, crankshaft centerline to bottom - mm (in)	319 (12.6)
Weight, dry - kg (lb)	1055 (2326)

Calculated Generator-set Rating - 1800 RPM

Rated Speed Hz (rpm)	60 ( 1800 )
Generator efficiency %	88-92
Engine Power Prime kW (hp)	166 (222.6)
Power factor	0.8
Calculated generator set rating prime - kWe	146-153
Calculated generator set rating prime - kVA	183-191

Calculated Generator-set Rating - 1500 RPM

Rated Speed Hz (rpm)	50 ( 1500 )
Generator efficiency %	88-92
Engine Power Prime kW (hp)	139 (186.4)
Power factor	0.8
Calculated generator set rating prime - kWe	122-129
Calculated generator set rating prime - kVA	153-161

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