Detroit Diesel Corp. (DDC) just wrapped up the first demonstration of its in-use emissions test system on a 2004 model Series 60 heavy-duty diesel engine using a device installed on the truck itself.
DDC said it is developing mobile testing units because the U.S. Environmental Protection Agency (EPA) mandates that all heavy-truck emissions standards from 2002 through 2010 must be demonstrated over the useful life of the engine. That translates to 435,000 miles for heavy-duty diesel engines.
Glenn Lysinger, DDC’s chief compliance officer, said the company worked with an in-service truck and driver to evaluate a portable emissions measurement system (PEMS) installed on the vehicle. The DDC engineer measured gaseous exhaust emissions as the driver drove his normally scheduled delivery route.
The device demonstrated that DDC’s ’04 Series 60 met all applicable diesel emission standards under real-world driving conditions, said Lysinger.
He added that the test results showed that the ’04 Series 60, which had accumulated more than 360,000 miles before the testing was conducted, still produced emissions well within the regulations and required no preparation prior to testing outside of its regularly scheduled maintenance.
“Under the voluntary phase of this testing, we report these test results to EPA to demonstrate our compliance,” Lysinger noted. “We continue to work with the Engine Manufacturers Association, EPA and the California Air Resources Board in developing in-use emissions test methods.”
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