More new marine engines at WorkBoat Show

The company, which makes marine diesel engines ranging in output from 56 kW to 559 kW, showed its new Marine Tier 3 PowerTech 4.5L and 6.8L propulsion and generator-drive engines in New Orleans.

John Deere will meet US Environmental Protection Agency (EPA) Marine Tier 3 emissions regulations that began to take effect in 2009 based on cylinder displacement and power per displacement with a complete lineup of PowerTech 4.5L and 6.8L propulsion and generator-drive engines. 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 impacted John Deere 4.5L and 6.8L engines beginning January 1, 2013. Tier 3 regulations affecting John Deere 9.0L and 13.5L marine engines start in 2014.

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.

The PowerTech 4045TFM85 generator drive engine will offer quiet and smooth operation for genset 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.

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 popular PowerTech 6081AFM75 propulsion and generator- drive engine. The PowerTech 6068AFM85 and PowerTech 6068SFM85 engines will feature high-pressure common-rail fuel systems, four valves per cylinder and low-temperature aftercoolers. The 6068AFM85 model will be available with keel cooled or integrated heat exchanger options. The 6068SFM85 engine will be offered with an integrated heat exchanger configuration.