EPA, CARB certify Cummins ISX11.9 engine

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Cummins Inc. announced it has received certification from the U.S. Environmental Protection Agency and the California Air Resources Board for its ISX11.9 diesel engine. The new ISX11.9 is an expansion of Cummins’ 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. Cummins says the 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.

Cummins says the ISX11.9 builds upon the strength and legacy of its ISM engine and the technology of the ISX15. The Cummins ISX11.9 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 also will utilize Cummins’ aftertreatment system with selective catalytic reduction (SCR) technology.

Designed for improved pulling power, driveability and 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 motor coaches, as well as tanker and daycab operations in Class 8 trucks.

“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,” says Ed Pence, vice president and general manager of Cummins’ 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 will offer horsepower ratings of 310-450 and torque ranging from 1150-1650 lb.-ft. for the ISX11.9, depending upon vehicle application. The compact design of the ISX11.9 allows customers to select engine options that have been tailored to suit unique operating needs. 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 customers who need to maximize payload.

For the ISX11.9, Cummins says it has accumulated more than 1.44 million miles and nearly 19,000 hours of testing, both in-house and with customers, in nearly 20 unique vehicle installations. The company says it had shipped more than 12,000 EPA- and CARB-certified on-highway engines as of June.