28 Jul '15, 5pm

#STNEXPO @CumminsWestport announces new midrange #naturalgas engine for #schoolbuses.

The ISB6.7 G natural gas engine is based on the Cummins ISB6.7 diesel engine platform - the industry leader in the Cummins MidRange engine family and the top-selling engine in the School Bus market. The ISB6.7 G is fueled by compressed natural gas (CNG), liquefied natural gas (LNG) or renewable natural gas (RNG), utilizing Cummins Westport's proprietary spark-ignited, stoichiometric combustion with cooled Exhaust Gas Recirculation (SEGR) technology. Currently in field trials, the ISB6.7 G will be in full production by mid-2016. An important feature of the ISB6.7 G is Three-Way Catalyst (TWC) aftertreatment, which is packaged as a muffler, and is maintenance-free. No Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR) aftertreatment will be required. Preliminary specifications include a range of ratings up to 260 hp and 660 lb-ft torque, and automatic tra...

Full article: http://www.stnonline.com/index.php/news/industry-releases...

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