COLUMBUS, Ind. — Cummins says it has submitted the 5.9 liter ISB engine for certification to the Environmental Protection Agency’s (EPA) 2.5-gram NOx+NMHC standard.

Certification is expected to come early this summer, which will be followed closely by a production ramp up. Cummins says it began sending prototype engines to vehicle manufacturers more than a year ago — enabling them to test their installation processes and prove the engine’s capability well ahead of the deadline.

“By submitting the application for certification early, we again demonstrate our commitment to delivering proven, reliable products to our customers,” says Thomas Kieffer, executive director of marketing at Cummins. “And customers will love this engine because they can maintain their maintenance intervals, have better performance and up to two per cent better fuel economy.”

The new ISB was introduced in Europe more than a year ago and is proving to be a performance and reliability leader. 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.