InfraStructures - June/July 2010 - Generator Drive Power Ratings for Interim Tier 4 Engines

Generator Drive Power Ratings for Interim Tier 4 Engines

John Deere Power Systems (JDPS) is pleased to announce the generator drive power ratings for its entire line-up of Interim Tier 4 diesel engines. The new power ratings are the latest addition to John Deere’s already extensive range of standby and prime gen-set engines that meet emissions regulations around the world.

For prime power applications, Interim Tier 4 emissions regulations begin January 1, 2011 for 174 hp and above engines and require a 90% reduction in diesel particulate matter (PM) and a 50% reduction in nitrogen oxide (NOx) from previous Tier 3 requirements.

The new, more stringent emissions regulations represent both a challenge and, at the same time, an opportunity for the industry to contribute to protecting our environment. JDPS is pleased to offer a complete range of generator drive engines that meet emissions regulations while delivering quick-starting, clean-running and fuel-efficient performance.

“We have built our gen-set engine line-up upon simple, fuel-efficient and field proven technologies that enable John Deere to help leading generator manufacturers meet increasingly stringent emissions regulations,” said Vincenzo Perrone, power generation business manager for JDPS. “Our line-up of John Deere Interim Tier 4 generator-drive engines also offers exceptional power density in a compact size, which provides customers with greater installation flexibility.”

For engines 75 hp and above, John Deere will start with its proven PowerTech™ Plus Tier 3 engine platform, which includes cooled exhaust gas recirculation (EGR) for NOx control, and add an exhaust filter for reducing PM. These engines will feature full-authority electronic controls, a four-valve cylinder head, a high-pressure fuel system, turbocharging and an air-to-air aftercooling system.

Engines between 75 hp and 173 hp will be available in 4,5 l and 6,8 l displacements and will be equipped with either a wastegate or variable geometry turbocharger depending upon the size of the engine.

Engines below 75 hp, which include the John Deere PowerTech M 2.4L and 4.5L engines, meet Interim Tier 4 emissions regulations without the use of cooled EGR or an exhaust filter. These engines feature a 2-valve cylinder head, a fixed geometry turbocharger, mechanical unit pump fuel system (2.4L) and mechanical rotary fuel system (4.5L).

John Deere will continue to offer a full range of reliable engines for use in standby applications since emergency stationary applications are not required to utilize Interim Tier 4 engines with aftertreatment devices. John Deere’s full range of generator-drive engines includes non-emissions certified; European Union Stage II and Stage III A; and U.S. Environmental Protection Agency Tier 1, 2, 3 and Interim Tier 4 models ranging from 2,4 l – 13,5 l of displacement and covering gen-set ratings from 33 kVA – 465 kVA.

Source: Deere & Company