Cummins Westport announced it has begun development on the ISB6.7 G, a mid-range 6.7 liter natural gas engine designed to meet the increasing demand for on-highway vehicles powered by lower cost, cleaner and increasingly abundant natural gas. As a leading supplier of natural gas engines, Cummins Westport Inc. continues to expand its product range to supply the growing demand for natural gas engines.
The ISB6.7 G engine will be based on the Cummins ISB6.7 diesel engine and will use Cummins Westport’s proven spark-ignited, stoichiometric cooled exhaust gas recirculation (SEGR) technology. Exhaust aftertreatment will be provided by a simple, maintenance-free three-way catalyst.
The engine will run on compressed natural gas (CNG), however, the natural gas may be stored on the vehicle in liquefied natural gas (LNG) state or as CNG. The ISB6.7 G is expected to be in production by 2015 and will be designed to meet Environmental Protection Agency (EPA) and California Air Resources Board (CARB) regulations in force at the time of launch.
“The addition of the ISB6.7 G will round out our family of high performance natural gas engines,” said Jim Arthurs, President of Cummins Westport. “It joins the 8.9-liter ISL G, with over 16,000 engines in service, and the 11.9-litre ISX12 G, which will start production in 2013, to give our customers a broad range of natural gas engines for on-highway applications.”
Caterpillar Inc., the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives, announced at the inaugural Natural Gas for High Horsepower Applications (HHP) Summit on Sept. 27 its intentions to go ‘all-in’ on natural gas and produce even more natural gas-fueled equipment and engines for a variety of applications.
Joel Feucht, Caterpillar’s director of gas engine strategy for the energy and power systems businesses, made the announcement during his keynote address at HHP Summit 2012, a first-ofits-kind event that examined the economic and environmental benefits of using the clean-burning, domestically abundant natural gas in fuel-hungry high horsepower applications.
“We have decided to go all-in on gas,” declared Feucht during his keynote address at HHP Summit on Sept. 27. “We are going to invest because we see a global market long term. Large engines are going gas. It’s not debatable; it’s our conclusion.”
Feucht’s remarks confirmed that Caterpillar will provide natural gas fuel as an option for engines across its many high horsepower lines for marine, rail, mining, earthmoving and drilling operations. The company recently announced its first expected liquefied natural gas (LNG)-powered will likely include Cat 793, 795 and 797 mining trucks, and locomotives produced by Electro-Motive Diesel (EMD), a unit of Caterpillar’s Progress Rail Services.
“There is huge economic incentive to move to natural gas,” Feucht stated noting that price of oil and gas are going to stay disconnected for the foreseeable future thereby creating an economic incentive to use natural gas in fuel-hungry high horsepower applications.
Current users of natural gas to power high horsepower equipment are realizing a cost savings of 30 to 50 percent. New technologies expanding access in North America have contributed to the low-cost of natural gas.
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