Cummins Inc. received certification from the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) for its ISX11.9 diesel engine. The new ISX11.9 is an expansion of the industry-leading Heavy-Duty engine product line for Cummins and will commence with full production in August.

Certification of the ISX11.9 rounds out the complete lineup of Cummins engine offerings for on-highway applications for 2010.

The current EPA regulations took effect Jan. 1, 2010, and are the most stringent in the world for on-highway commercial vehicle engines. Cummins ISX11.9 meets the emissions regulations for Oxides of Nitrogen (NOx) and Particulate Matter (PM) of 0.2 grams and 0.01 grams per brake-horsepower-hour, respectively.

The rugged ISX11.9 builds upon the legacy of strength and performance of the Cummins ISM engine and the proven technology of the ISX15. It features an enhanced cooled Exhaust Gas Recirculation (EGR) system, a single VGT Turbocharger and the proprietary XPI fuel system.

Like the lineup of on-highway Heavy-Duty and MidRange engines, the ISX11.9 will also utilize Cummins Aftertreatment System with Selective Catalytic Reduction (SCR) technology.

Featuring better pulling power, excellent driveability and stronger clutch engagement torque, the ISX11.9 is designed for rigorous duty cycles, including those for work trucks such as dump and mixer trucks, and refuse applications. Additionally, a full suite of horsepower and torque ratings are available for fire and emergency vehicles, recreational vehicles and motorcoaches as well as tanker and day cab operations in Class 8 trucks.