Cummins Inc. has submitted its heavy-duty, 11.0-liter ISM engine for certification under the U.S. Environmental Protection Agency’s (EPA) new diesel emission standards, which will take effect Oct. 1, the company announced today (Aug. 23).
The ISM comes with 280-horsepower (hp) to 385-hp ratings.
Cummins also will offer a restricted 400-hp and 450-hp rating for the ISM for motorhome and fire truck applications, the Columbus, Ind.-based company added.
Last spring, Cummins’ ISX engine became the first certified under the new EPA 2.5 gram NOx+NMHC standard. Its medium-duty ISB engine received the EPA certification on Aug. 15.
“The ISM is a proven engine in the industry,” said Thomas Kieffer, executive director/marketing at Cummins. “We have simply added the same cooled exhaust gas recirculation subsystem that is used on the Cummins ISX and ISB engines. This approach provides customers with the most reliable and best performing engines in their class.”