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San Diego Metropolitan Transit System Orders 250 Cummins Westport ISL G Natural Gas Engines
11 April 2008
The San Diego Metropolitan Transit System (MTS) has ordered 250 Cummins Westport ISL G natural gas engines (earlier post) to be installed in New Flyer, 40-foot, low-floor buses.
The ISL G surpasses EPA 2007 phase-in levels and meets 2010 emission standards of 0.2 g/bhp-hr NOx (nitrogen oxide) and 0.01 g/bhp-hr PM. Based on the Cummins ISL, the ISL G leverages Cummins’ cooled Exhaust Gas Recirculation with stoichiometric combustion allowing for the use of a three way catalyst, which is maintenance free and is in common use in passenger cars.
In addition to delivering ultra-low emissions, the ISL G, with ratings from 250 to 320 horsepower, will deliver increased thermal efficiency and more than 30% higher low-speed torque compared with today’s CWI Plus engines.
The San Diego Metropolitan Transit System (MTS) is a multi-modal transportation agency serving San Diego, California and operates a fleet of more than 600 vehicles carrying more than 88 million passengers per year.
April 11, 2008 in Brief | Permalink | Comments (1) | TrackBack (0)
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Posted by: sjc | April 11, 2008 at 09:22 AM
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This is good news. The people of San Diego would like cleaner air and an effective mass transit system is what they need.