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March 05, 2008
The next-generation GM Hybrid System will complement GM's widely acclaimed Two-Mode Hybrid system as part of the company's advanced powertrain portfolio. The Two-Mode Hybrid system debuted in 2007 in the Chevrolet Tahoe and GMC Yukon, and will be offered this year in the Cadillac Escalade full-size SUV and the Chevrolet Silverado and GMC Sierra full-size pickups. The first front-wheel-drive application of the Two-Mode Hybrid system will debut in the 2009 Saturn Vue Green Line.
The increased power from the lithium-ion battery will allow the next-generation GM Hybrid System to be used in a wide range of global powertrains, including naturally aspirated engines, new high-efficiency turbocharged engines, bio-fuel engines and diesels.
This technology is showcased in the Saab 9-X BioPower Hybrid concept car, which debuted today at the Geneva Motor Show. The Saab concept is capable of 117 g CO2/km, or projected fuel consumption of just 4.9 l/100 km (48 mpg) when running on gasoline over the combined cycle.
The next-generation GM Hybrid System helps optimize fuel efficiency and reduce emissions by:
- Turning the engine off at idle
- Offering brief electric-only propulsion
- Using a more powerful electric motor to enhance engine efficiency
- Extending fuel cutoff during deceleration
- Extending regenerative braking to recapture more energy
- Performing intelligent hybrid battery charging
For additional energy savings, an advanced six-speed automatic transmission also may be used, depending on the vehicle application.
The current GM Hybrid System was introduced in 2006 on the Saturn Vue Green Line SUV, which remains the lowest-priced hybrid SUV in the U.S., starting at a $25,995 MSRP. Shanghai GM announced in January that the Buick LaCrosse Eco-Hybrid sedan will be the first application for the current GM Hybrid System in Asia-Pacific.
By the end of 2008, GM will offer eight hybrid models in North America and nine worldwide. GM will introduce 16 new hybrid vehicles over the next four years.
(Mar 4, 2008)