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New engine series from Cummins

Jason Cannon September 16, 2013

Cummins Inc. announced Monday its new G Series diesel engine platform.

Cummins says the G Series is an in-line six cylinder engine, and will be available in 10.5- and 11.8-liter displacements.

“The G Series global design approach is a vivid demonstration of how Cummins is transforming from a multinational to a truly global company,” says Steve Chapman, Cummins Vice President and Group Vice President – China and Russia. “This engine platform has been designed for diverse and global markets by utilizing the expertise and local knowledge of our engineers from around the world.”

The G Series’ common, compact installation envelope, Cummins says, minimizes engineering requirements for vehicle and equipment manufacturers.

A sculptured engine block retains high rigidity while removing unnecessary mass, and the use of composite material for the oil pan and valve cover provides further weight savings. With this innovative approach, the G Series achieves an engine weight of just 1,900 pounds, increasing the power-to-weight ratio.

Cummins has incorporated its Xtra-High Pressure Injection (XPI) fuel system in The G Series, which was derived from the larger X Series engine. With multiple injection events driven by high-precision Cummins electronic controls, the XPI fuel system contributes to a very impressive peak torque for the G Series of 1700 lb-ft (2305 N•m), together with a torque rise as high as 60 percent available. These attributes enable the G Series to deliver exceptionally fast response to increasing load factors from low engine rpm.

The G Series offers fuel efficiency through parasitic reducing technology without variable-flow pumps that add unnecessary cost and reduce reliability, Cummins says. Its Single Cam In Head (SCIH) design with roller valve train and high-efficiency intake ports continues the design theme of minimum complexity and maximum efficiency. The resulting low-weight design allows more payload to be delivered while requiring less energy to manufacture than competitive designs.

For on-highway markets, the G Series Heavy-Duty engine platform will be introduced as the Cummins ISG11 and Cummins ISG12, with a power range from 290 hp to 512 hp.

At launch in 2014, engines will meet Euro III, Euro IV and China NS4 emissions requirements. Engines for Euro V, Euro VI and U.S. Environmental Protection Agency (EPA) are also in development. The ISG11 and ISG12 are ideal power solutions for Heavy-Duty trucks in long-haul, regional-haul and vocational service, as well as buses, motor coaches, fire trucks and recreational vehicles.

Production will start during the first half of 2014.

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