Beat 2010 Emissions Regulations
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show details May 4 (3 days ago) Reply

Cummins Westport ISL G In Use Test Results Beat 2010 Emissions Regulations

May 4, 2009

VANCOUVER, BC - Cummins Westport Inc. (CWI) (TSX:WPT)(NASDAQ:WPRT), a
leading provider of high-performance, alternative fuel engines for the
global market, announced today that an ISL G in-use emissions test
performed on an urban transit bus recorded emissions significantly lower
than the 2010 EPA and California Air Resources Board (CARB) Heavy Duty
emission regulations.

"The ISL G continues to demonstrate low emission and performance benefits
as field results are obtained," said Gordon Exel, Vice President and GM -
Americas at Cummins Westport. "ISL G emissions below 2010 emission
regulations in both the laboratory and on the road with simple,
maintenance free three way catalyst aftertreatment is an important benefit
for our customers."

The Cummins Westport (CWI) 8.9 litre ISL G natural gas engine features new
combustion technology (Stoichiometric Cooled EGR) that enabled the ISL G
to be the first heavy duty engine to meet the 2010 EPA emissions
regulations.

To test the ISL G not only in the laboratory, but more importantly out in
the real world under real-world vehicle operating conditions, Cummins
Westport with the support of Sacramento Regional Transit District
commissioned Sensors Inc., a global leader for Portable Emissions
Measurement Systems (PEMS), to perform an in-use tailpipe emissions test
in accordance with EPA's Heavy Duty In-Use Testing guidelines.

The test was conducted on a 2008 40 foot Orion VII Low Floor natural gas
bus powered by an ISL G 280, driven by a Sacramento Regional Transit bus
driver on city and highway routes. The U.S. EPA in-use testing procedures
were designed such that the heavy-duty engine emissions are controlled
over the full range of speed and load combinations commonly experienced in
vehicle applications.

Sensors Inc. concluded that emissions were significantly lower than the
2010 EPA Heavy Duty in use emission requirements.

About Cummins Westport Inc.

Cummins Westport Inc. manufactures and sells