Cummins Westport says it has first 2010-certified engine

VANCOUVER — Canadian alternative engine maker Cummins Westport says that its ISL G urban truck and bus diesel has received formal certification from the U.S. Environmental Protection Agency for 0.2g/bhp-hr oxides of nitrogen (NOx) and 0.01 g/bhp-hr particulate matter (PM).

“The ISL G is the world’s first heavy duty engine for urban bus and truck applications to be certified to the 2010 EPA standard,” said Guan Saw, president of Cummins Westport. “With improved low end torque and maintenance-free aftertreatment, the ISL G will deliver diesel-like performance and reliability and the opportunity for customers to take advantage of the lower cost of natural gas.”

Based on the Cummins ISL, the ISL G leverages Cummins proven Exhaust Gas Recirculation (EGR) technology with “stoichiometric” combustion allowing for the use of a three way catalyst, which the company says 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 hp, will deliver increased thermal efficiency and over 30 percent higher low-speed torque compared with today’s CWI “Plus” engines.

Cummins Westport has already logged over 500 orders for the ISL G from U.S. transit properties.