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Cummins announces new global engine platform

16 September 2013

Cummins announced a new global heavy-duty engine platform that will complement its existing product offering. The G Series platform is an in-line six cylinder engine that will be available in 10.5- and 11.8-liter displacements to meet a variety of on-highway and off-highway global market requirements and emissions standards.

For on-highway markets, the G Series Heavy-Duty engine platform will be introduced as the Cummins ISG11 and Cummins ISG12. These engines offer a power range of 290-512 hp (216-382 kW). At launch in 2014, engines will meet Euro III, Euro IV and China NS4 emissions requirements. Engines for Euro V, Euro VI and US Environmental Protection Agency (EPA) applications are also in development. The ISG11 and ISG12 are intended for heavy-duty trucks in long-haul, regional-haul and vocational service, as well as buses, motor coaches, fire trucks and recreational vehicles.

The QSM12 engine unveiled at BAUMA in April 2013 is part of the G Series and will now be renamed QSG12. The QSG12 is designed to meet US EPA Tier 4 final and EU Stage IV emission regulations relying on urea-SCR alone, without the need for a cooled exhaust gas recirculation (EGR) system. With ratings covering a power range of335-512 hp (250-382 kW), the QSG12 is intended for such applications as tractors, combines, wheel loaders, excavators, cranes and material handling, road building equipment, compressors, screening and crushing machines.

A key design focus for the G Series has been to achieve significant weight savings. The engine features a sculptured block and uses composite material for the oil pan and valve cover. With these technologies, the G Series achieves an engine weight of only 1,900 lbs (862 kg).

The G Series incorporates the Xtra-High Pressure Injection (XPI) fuel system, derived from the larger X Series engine. With multiple injection events, the XPI fuel system contributes to a high peak torque for the G Series of 1700 lb-ft (2305 Nm).

Initial engines are designed to run on diesel fuel, said Cummins, suggesting that natural gas or other alternative fueled versions are possible in the future.

The G Series will initially be manufactured at the Beijing Foton Cummins Engine Co., serving customers on a global basis. Production will start during the first half of 2014.

Source: Cummins