Diesel Engines Receive Emissions Certification
Three new John Deere Power Systems 4.5L diesel engine models have
received Tier 3/Stage IIIA certification from the U.S. Environmental Protection
Agency and the European Union. The turbocharged PowerTech E 4.5L, the turbocharged
PowerTech M 4.5L, and the turbocharged and air-to-air aftercooled PowerTech M
4.5L engines are the latest units to be certified. The turbocharged PowerTech
E 4.5L engine features a power range of 63 kW–74 kW (85 hp–99 hp)
and is the first John Deere engine under 100 hp to be electronically controlled.
The engine’s high-pressure common- rail fuel system, full-authority electronic
controls, multiple injection strategy and fixed geometry turbocharger enable it
to offer improved cold-start performance, precise engine-speed control, torque-curve
shaping and more. The turbocharged PowerTech M 4.5L engine features a power range
of 56 kW–63 kW (75 hp–85 hp), and the turbocharged and airto- air
aftercooled PowerTech M 4.5L engine features a power rating of 74 kW (99 hp).
PowerTech M 4.5L engines feature a two-valve cylinder head, a fixed geometry turbocharger
and a mechanical rotary pump fuel system. According to Deere, the simple design
and mechanical controls of PowerTech M engines offer flexibility and cost savings
while maintaining the same platform as Tier 2/Stage II engines, but when compared
to their Tier 2/Stage II counterparts, PowerTech M engines offer improved or maintained
peak torque levels and transientresponse time.
www.johndeere.com/jdpower
As featured in Womp 08 Vol 1 - www.womp-int.com