New Marine Diesel Engines From John Deere EPA lll Compliant

By George Backwell at December 08, 2012 05:05
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Workboat, yacht, commercial fishing boat and other small utility boat operators will be interested to know that John Deere unveiled new EPA Tier 3 compliant marine diesel engines at the International WorkBoat Show 2012 just a few days ago.

It’s been quite a week for the Moline, Illinois-based American company, established way back in 1837 and best known for its roots in agricultural equipment manufacture. Within days of launching its new range of marine engines, John Deere measured up to Thomson Reuters’s patent-related standards for recognition as one of the world’s top 100 innovators.

Cutting to the chase, the company unveiled new 4.5L and 6.8L  propulsion and generator-drive engines to comply with imminent EPA Marine Tier 3 regulations that will impact on engines of that capacity from January 1, 2013: IMO Tier 2 and EU 97/68/EC emission exhaust gas emission compliance is also certified.

The New 4.5L Engines

Marine Diesel Engine 4.5L EPA Tier 3 Compliant: Image courtesy of John Deere

Two new 4.5L models are introduced: the PowerTech 4045TFM85 generator-drive version and the PowerTech 4045AFM85 propulsion and generator-drive engine, which is the most powerful 4.5L marine engine ever launched by John Deere.

The genset has two valves per cylinder while the duel-purpose propulsion/genset has four valves per cylinder as well as turbocharging and air-to-coolant aftercooling. Both engines have high-pressure common rail fuel systems and a choice of keel-cooled or integrated heat exchanger options.
The New 6.8L Engines
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.

"John Deere integrated features into our newest 6.8L and larger Tier 2 marine engines with Tier 3 emissions regulations in mind," said Carl Micu, global sales and marketing project manager for JDPS. "As a result, we will be able to make a seamless transition to Tier 3 emissions regulations. John Deere Tier 3 marine engines will meet the more stringent emissions regulations while maintaining similar performance and a similar package size."

John Deere Power Systems manufactures and markets 30 kW to 448 kW (40 hp to 600 hp) industrial diesel engines and 56 kW to 559 kW (75 hp to 750 hp) marine diesel engines, as well as drivetrain components for use in a variety of off-highway applications.

They say they will continue to offer Tier 2 and non-certified marine engine models for regions and applications not impacted by the new regulations.


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