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John Deere Power Systems Offers Tier 3, Interim Tier 4 and Stage III A Ready Engines


WATERLOO, IA.— John Deere Power Systems (JDPS) has announced that many of its engines under 75 kW (100 hp) are now U.S. Environmental Protection Agency (EPA) Tier 3, Interim Tier 4 and European Union (EU) Stage III A ready.

Four ratings of the PowerTech M™ 2.4L engine are planned for EPA Interim Tier 4. These engines will also meet current EU Stage III A standards, which took effect January 2007. The PowerTech M 2.4L engines are either naturally aspirated or turbocharged.

Four new ratings of the PowerTech E™ 2.4L engine and one new rating of the PowerTech E 3.0L are Interim Tier 4 and Stage III A ready. The 2.4L engines are turbocharged and air-to-air aspirated and the 3.0L engine is turbocharged.

Planned power ratings for these Interim Tier 4 ready and Stage III A engines are as follows:

* PowerTech M 2.4L: 31 kW - 37 kW (42 hp - 49 hp)
* PowerTech E 2.4L: 42 kW - 49 kW (56 hp - 66 hp)
* PowerTech E 3.0L: 48 kW (65 hp)

Additionally, JDPS is planning six PowerTech E Tier 3/Stage III A ratings that will be offered above 56 kW (75 hp). These are as follows:

* PowerTech E 2.4L: 60 kW (80 hp)
* PowerTech E 3.0L: 57 kW - 74 kW (76 hp - 99 hp)

“With some of our PowerTech M and PowerTech E engines below 56 kW (75 hp), we chose to go straight from Tier 2 to Interim Tier 4. Because our 2.4L engines have demonstrated Interim Tier 4 and Stage III A capabilities, we’ve met our 2008 deadline. This demonstrates that the technology we have developed is a great foundation for our Tier 4 solution,” said Gita Rao, product manager of strategy and long-term planning for JDPS.

Preparing for Future Emissions Regulations
JDPS will leverage the technology developed to meet Tier 3/Stage III A emissions as the basis for meeting future emissions regulations. John Deere is exploring various technology options, including advanced in-cylinder and aftertreatment solutions.

“We have narrowed down the technologies we are exploring for Tier 4, but have not yet settled on the solution that will be right for our customers and us,” said Rao. “For Tier 4, we are planning to continue with the multiple-platform option. We’re trying to include many potential solutions for Tier 4. The goal is to determine which concepts work best together in order to provide a solution that meets the needs of each given application.”

JDPS is also optimizing the combustion system for reduced emissions. This includes the use of multiple injections, increased fuel injection pressure, modified combustion bowl and fuel injector geometry. JDPS is reviewing a number of aftertreatment technologies, including diesel oxidation catalyst (DOC) and diesel particulate filter (DPF) systems. John Deere is also working on NOx adsorbers, lean NOx catalysts and selective catalytic reduction (SCR) solutions. Homogeneous charge compression ignition (HCCI) continues to be explored as an alternative solution.

For further information, the news media should contact:
Tom Withers, Manager, Marketing Communications
John Deere Power Systems
Phone: (319) 292-4617
Fax: (319) 292-5075


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