Cummins submits ISB engine for EPA certification

COLUMBUS, Ind. (May 27, 2002) — Cummins Inc. said it has submitted its 5.9 litre ISB engine for certification to the Environmental Protection Agency’s (EPA) 2.5-gram NOx+NMHC standard. Production will begin upon receipt of the certification, which is expected early this summer, the company said.

Cummins began sending prototype engines to vehicle manufacturers over a year ago enabling them to test their installation processes and prove the engine’s capability ahead of the EPA’s Oct. 1 deadline. The new ISB was introduced in Europe more than a year ago.

To meet the EPA emissions standard, a cooled exhaust gas recirculation (EGR) subsystem was added. In addition to the base engine experience in Europe, the new ISB with the cooled EGR subsystem will have more than one million field test miles by the time of production.

On April 2 Cummins announced that its ISX engine became the first engine certified to the new EPA standard. At that time the company stated that it would certify the ISB engine mid-summer, and the ISM engine prior to the October deadline. The company continues on its path to meet these commitments.