Company working on new mid-range natural gas engine
Wednesday, October 10, 2012
VANCOUVER, British Columbia — Cummins Westport Inc. recently 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 natural gas.
The ISB6.7 G engine will be based on the Cummins ISB6.7 diesel engine and will use Cummins Westport’s spark-ignited, stoichiometric cooled exhaust gas recirculation technology. Exhaust aftertreatment will be provided by a maintenance-free, three-way catalyst.
The engine will run on compressed natural gas, however, the natural gas may be stored on the vehicle in liquefied natural gas 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 and California Air Resources Board regulations in force at the time of launch.
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Shale FAQ
What is fracking?
Fracking is a slang term for hydraulic fracturing. Fracturing is a process by which highly pressurized fluid is pumped thousands of feet into the ground to fracture rock formations. The goal is to release the natural gas that’s locked inside the rock.
Is it safe?
What most concerns people about fracturing is ground water contamination. The worry is that fractures underground, caused by the process, will extending upwards and into aquifers, releasing gas and chemicals into the ground water supply. There’s been no confirmed reports of such a thing happening. Though surface spills and drill site blowouts can lead to localized environmental concerns.
Will my water catch on fire?
Flammable water is caused by the release of methane gas into a drinking water supply. Methane gas occurs naturally and can be released by any kind of drilling, including water wells. In Pennsylvania officials fined Chesapeake Energy $1 million for contaminating ground water with methane. It was determined that the company had not properly cemented it’s boreholes and gas migrated up the well, between rock and into aquifers.