Detroit Diesel Corporation Receives EPA Certification For the Series 60 Engine

DETROIT, Oct. 14, 2002 -- Detroit Diesel Corporation (DDC) confirmed today that it has received EPA certification for its 12.7 and 14.0 liter Series 60 on-highway engines. The Series 60 engine is fully certified to the new 2.5 g/hp-hr NOx + NMHC standard and does not require an aftertreatment device of any kind. In addition, two different families of the Series 50 urban bus engines have received emission certification. Detroit Diesel is the only manufacturer to have both diesel and natural gas urban bus engines emission certified and available. DDC has also submitted a certification application for a Series 50 urban bus engine equipped with a particulate filter. Once certified, this will be the only heavy duty diesel engine certified to the most stringent California particulate standard of 0.01 g/hp-hr.

"As we had previously announced, the Series 60 will be equipped with Exhaust Gas Recirculation (EGR). During the week of October 8, the new tooling and test equipment was installed. We will begin a comprehensive training program for our production workforce starting October 14th," according to Mark Bara, Senior Vice President - On Highway Engines.

The Series 60 engine with EGR offers truckers the best combination of a popular and proven product that is fully certified to the new standards. The Series 60 engine with EGR requires no changes in maintenance procedures and recommended oil change intervals remain as they were. In fact, with eight million miles of testing to date, the wear rates of piston rings and cylinder liners of the EGR Series 60 engines are proving to be much reduced compared to previous engines without EGR. Cylinder kit wear has been significantly reduced which should result in even longer life to overhaul than the current Series 60, already well-known for its durability.

There are over 650,000 Series 60 engines in operation and the engine has been the most popular heavy-duty engine in NAFTA for the past eleven years in a row.

The Series 60 with EGR features a new low profile gear train and other lighter-weight components to offset the weight increase of the EGR components. The EGR Series 60 engine actually weighs 65 pounds less than the non-EGR version. The engine weighs just 2,585 pounds, making it the lightest of the big bore engines.

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