Cummins has received certification from the Environmental Protection Agency and the California Air Resources Board for its ISX11.9 diesel engine, which will go into full production in August

With the certification, the ISX11.9 engine meets the EPA's emission standards for 2010, which involves cutting nitrogen oxides and particulate matter emissions.

The ISX11.9 builds upon the Cummins ISM engine and the ISX15. The Cummins ISX11.9 uses 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 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. Ratings range from 310-450 horsepower with a maximum 1,650 pounds-feet of torque.

"Cummins is excited about the expansion of the heavy-duty product line to include the ISX11.9, which is ideally suited for vocational and specialty vehicles," said Ed Pence, vice president and general manager for the heavy-duty engine business. "Customers can be confident that the ISX11.9 is the better choice for these applications, which require strength, performance and maximum uptime in their operations."

Cummins has invested over $63 million over the past two years to ready its heavy-duty manufacturing facility - Jamestown Engine Plant (JEP) - for the full production of the ISX11.9 engine line. Since mid-2009, the JEP has been producing 2010 heavy-duty engines, including the ISX15, and had shipped over 4,500 heavy-duty engines as of the end of June.

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