Medium Duty Engines
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New EPA '07 regulations.
New solutions.
New diesel engine emissions standards have resulted in additional hardware, software and, ultimately, higher costs. It’s a tough challenge. But GM has solutions.
Our diesel engines satisfy the new EPA ’07 emissions standards in powerful fashion. In fact, they generate half the amount of nitrogen oxide (NOx) and hydrocarbons as in 2004, and reduce particulate matter (PM) by 90 percent.
You can count on optimum engine performance. Our 2007 emissions technology has already been proven in more than 60,000 Isuzu trucks operating successfully in Japan for the past two years.
DPF Regeneration
To keep the Diesel Particulate Filter (DPF) working efficiently, the trapped particulates are burned off
and the filter is cleaned with a high temperature (around 1000ºF in the particulate filter) regeneration
process that leaves a harmless ash residue.
Please see your dealer for complete details about DPF regeneration.
Closed Crankcase System
The 2007 regulations require reductions in all diesel engine emissions, including crankcase gases.
The new closed crankcase system reroutes ventilation gases back into the engine for combustion.
Driver Warning System
In most applications, the engine burns off particulates automatically. However, if the Diesel Particulate Filter
becomes restricted, an indicator light will illuminate to notify the operator that action is required.
Exhaust Gas Recirculation
To satisfy 2007 emissions requirements, Duramax and Isuzu engines will use an advanced exhaust
gas recirculation system and variable geometry turbochargers.
Diesel Particulate Filter (DPF)
To reduce particulate matter, a DPF captures soot and larger sulfate particles in a series of ceramic honeycomb channels.
Exhaust gas passes through the porous material where particulates are trapped and accumulate on the channel walls.
Meeting New Standards
New EPA regulations for 2007 require the reduction of nitrogen oxide (NOx) and hydrocarbons by more than 50% and
particulate matter (PM) by 90% beyond the 2004 emissions standards. Further reductions will be required by 2010.