John Deere Power Systems (JDPS) has launched its new Marine Tier 3 PowerTechTM 4.5L and 6.8L propulsion and generator-drive engines, meeting U.S. Environmental Protection Agency (EPA) Marine Tier 3 emissions regulations.

The PowerTech 4045AFM85 is the most powerful John Deere 4.5L marine engine ever launched

The PowerTech 4045AFM85 is the most powerful John Deere 4.5L marine engine ever launched

These engines also will achieve compliance with International Maritime Organization (IMO) Tier II emissions regulations and EU 97/68/EC.

New EPA Marine Tier 3 regulations impact John Deere 4.5L and 6.8L engines as of 1 January 2013 and Tier 3 regulations affecting John Deere 9.0L and 13.5L marine engines start in 2014.

New 4.5L engines
John Deere is adding two new 4.5L models to its lineup of Tier 3 marine engines: the PowerTech 4045TFM85 generator-drive engine and the PowerTech 4045AFM85 propulsion and generator-drive engine – both of which are particularly suited to fishing vessels.

The PowerTech 4045TFM85 generator-drive engine will offer quiet and smooth operation for gen-set applications. Features will include a high-pressure common-rail fuel system, two valves per cylinder, and the choice of keel cooled or integrated heat exchanger options.

The PowerTech 4045AFM85 will serve as a more powerful and compact choice in the power range that was previously covered for Tier 2 by the PowerTech 6.8L 6068TFM75 propulsion and PowerTech 6.8L 6068TFM76 generator-drive engines. The PowerTech 4045AFM85 engine will feature a high-pressure common-rail fuel system, four valves per cylinder, turbocharging and air-to-coolant aftercooling. It will be available with keel cooled or integrated heat exchanger options.

Propulsion power ratings for this engine include:

  • PowerTech 4045AFM85 propulsion engine: 119kW to 168kW (160hp to 225hp)

Generator-drive 4.5L engine prime power ratings include:

  • PowerTech 4045TFM85: 74kW (99hp) at 60Hz (1800rpm) and 61kW (82hp) at 50Hz (1500 rpm)
  • PowerTech 4045AFM85 generator-drive engine: 110kW (148hp) at 60Hz (1800 rpm) and 89kW (119 hp) at 50Hz (1500 rpm)

“The PowerTech 4045AFM85 is the most powerful John Deere 4.5L marine engine ever launched,” said Carl Micu, global sales and marketing project manager for JDPS. “With more power in a smaller package, the engine is a good choice for propulsion of small utility boats, workboats, trawler yachts, and commercial fishing boats. The generator-drive version will be an excellent engine for commercial and recreational generators.”

New 6.8L engines
John Deere 6.8L Tier 3 propulsion and generator-drive engines include the PowerTech 6068AFM85 and the PowerTech 6068SFM85 models. These engines will cover the power range previously covered by the PowerTech 6081AFM75 propulsion and generator- drive engine.

Propulsion power ratings for these engines include:

  • PowerTech 6068AFM85: 172kW to 246kW (230hp to 330hp)
  • PowerTech 6068SFM85: 186kW to 298kW (249hp to 400hp)

Generator-drive 6.8L engine prime power ratings include:

  • PowerTech 6068AFM85: 166kW (223hp) at 60Hz (1800 rpm) and 139kW
    (186hp) at 50Hz (1500 rpm)
  • PowerTech 6068SFM85: 195kW (262hp) at 60Hz (1800 rpm) and 168kW
    (226hp) at 50Hz (1500 rpm)

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