Cummins Inc has received certification from the Environmental Protection Agency (EPA) and the California Air Resources Board (ARB) for its ISX11.9 diesel engine. The new ISX11.9 is an expansion of the Heavy-Duty engine product line for Cummins and will commence with full production in August 2010. Certification of the ISX11.9 rounds out the complete lineup of Cummins engine offerings for on-highway applications for 2010.
Current EPA regulations took effect January 1, 2010. Cummins ISX11.9 meets the emissions regulations for nitrogen oxides and particulate matter (PM) of 0.2 grams and 0.01 grams per brake-horsepower-hour, respectively.
The ISX11.9 has improved reliability and durability and utilizes common components with the ISX15, including 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 use the Cummins Aftertreatment System with Selective Catalytic Reduction (SCR) technology.
Cummins will offer horsepower ratings of 310-450 (231-336 kw) and torque ranging from 1150-1650 lb-ft for the ISX11.9, depending upon vehicle application. Optional features include single- and dual-cylinder air compressors, Front Engine Power Take-Off (FEPTO), and the enhanced Cummins-designed Rear Engine Power Take-Off (REPTO) for maximized payloads.