August 25, 2006


GM to introduce new light-duty diesel for North America

Milford, Michigan – General Motors has announced it will introduce a new V8 turbodiesel for North American light duty trucks after 2009. The new engine improves fuel efficiency by 25 per cent, while delivering class-leading torque and power, and fitting within the same space as a small-block V8 gasoline engine.

“This new GM light-duty diesel is expected to become a favourite among customers who require excellent towing ability and fuel efficiency,” says Tom Stephens, group vice president, GM Powertrain. “It will meet the stringent 2010 emissions standards, and it will be compliant in all 50 states, making it one of the cleanest diesel vehicles ever produced.”

The engine will feature a 13 per cent reduction in CO2 versus gasoline engines, and at least a 90 per cent reduction in particulates and NOx compared to current diesel engines. It will also be GM’s first engine to use a NOx after-treatment system with diesel particulate filter, to help achieve Tier 2 Bin 5 and LEV 2 emissions standards. It will use aluminum cylinder heads with integrated manifolds, compacted graphite iron block, and a high-pressure, common-rail fuel system with the ability to inject fuel five times per combustion event, to control noise and emissions.

GM also reports that the 2007 version of its Duramax 6.6-litre V8 turbodiesel engine has been revised to meet stringent new 2007 federal emissions regulations, which require a 90 per cent reduction in particulate matter and 50 per cent reduction in NOx for diesel engines manufactured in and after January 2007.

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