Mar 19, 2009 11:56 AM

The ISB6.7, ISC8.3 and ISL9 engines continue to feature a single Cummins VGT Turbocharger; the ISC8.3 and ISL9 engines also feature the XPI fuel system, as they have since 2007. The most predominant change for 2010 is that the MidRange engines will share a common Electronic Control Module (ECM) with Cummins Heavy-Duty engines, with increased input/output and processing capability for full integration of the Cummins engine and aftertreatment system.

Engine braking capability on Cummins MidRange engines is provided by the VGT Turbocharger, and an optional compression brake is available for the ISC8.3 and ISL9.

Cummins ISB6.7 will be offered in truck ratings of 200-325 horsepower (150-242 kW), with peak torque of 520-750 lb-ft (705-1017 N•m). Cummins ISC8.3 will be offered in truck ratings of 260-350 hp (194-260 kW), with peak torque of 660-1000 lb-ft (895-1,356 N•m). The ISL9 will be offered in truck ratings of 345-380 hp (257-283 kW) and peak torque of 1150-1300 lb-ft (1560-1763 N•m).

Engine models and electronic calibrations for the bus, recreational vehicle and emergency vehicle markets will be available in 2010, as well as the ISB6.7 hybrid model.

“Cummins MidRange engines for 2010 are designed to perform in all types of applications and duty cycles, exceeding our customers’ expectations every mile,” said Jim Cramer, 2010 ISB Technical Program Leader. “The use of cooled EGR and Selective Catalytic Reduction offer a substantial fuel economy improvement – up to nine percent over an in-cylinder solution. With the use of SCR, we’re able to tune the combustion recipe in the engine to dramatically reduce diesel particulate filter regeneration. That means less fuel and greater simplicity in operations for our customers.”

Cummins on-highway engines for the U.S. and Canada are assembled in the U.S. at Cummins manufacturing facilities in Jamestown, New York; Rocky Mount, North Carolina; and Columbus, Indiana. Manufacturing processes were verified on the assembly lines for field test units. Limited production will begin in fourth quarter 2009 and full production in January 2010.