Hybrid Technology Touted at Auto Show

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Daimler AG will be the first to get to market announcing its intention to introduce a hybrid version of its Mercedes Benz flagship S class luxury sedan using a gasoline engine and a lithium ion power source in . The new S class is what is called a mild hybrid meaning the electric motor aids combustion but does not itself drive the car instead boosting the main engine. The new models will have a carbon dioxide emissions level of grams per kilometer . mile higher than some small cars but which Daimler strategist Johannes Reifenrath said would make it the most efficient luxury car in the world. To date the least ! emitting car in Mercedes fleet is the diesel S class with grams per kilometer. The Mercedes example demonstrates the application of the technology at the luxury end of the market and is spurred in part by tougher regulations due to take effect in Europe in that would require automakers to reduce average emissions in their fleet to grams per kilometer. Change has to start now. Automakers can t wait until Reifenrath said. General Motors said it expects to bring its first lithium ion battery powered hybrid engine system to market in North America sometime in . No products have been yet announced but officials said the technology had potential across a broad range of models. GM showcased the technology in a Saab concept car boasting carbon emissions of grams per kilometer on gas and grams per kilometer on ethanol. Unlike with GM s other hybrid project the Volt which has a large battery that can move the car by itself the new concept uses a smaller battery about the size of case of soft drinks to assist the main internal combustion motor. The dual ! announcements indicated an increased confidence in the technology already widely used in consumer electronics. But adapting to meet demanding auto requirements has been an obstacle as have concerns about costs and overheating. I think there s a trend there. I think it is good news that Mercedes and GM are coming out at the same time said GM spokesman Scott Fosgard. The Detroit based automaker is working with Hitachi Ltd. which has used a lithium ion battery in an electric car to develop its technology. GM s chief hybrid engineer Stephen Poulos said that the Hitachi battery design would give the GM application a degree of stability because it was easy to regulate the flow of energy but that tests were still being done to ensure stability to prevent overheating and the potential for fires. There are a lot of controls to make sure that doesn t happen he said. It is a more forgiving application of the lithium ion than most applications out there. Because they are smaller yet mo! re powerful than the nickel metal hydride batteries used in first generation hybrid cars like Toyota Motor Corp. s Prius lithium ion technology holds the potential to be used across a wider range of models as Mercedes launch of the technology in its powerful S class indicates. GM CEO Rick Wagoner said the company expected the technology to improve fuel economy by percent. But he said that to have a real impact the technology must drive high volumes. The view is that the technology has the opportunity to get a much better range on a small battery and this has a chance to break through in a big way Wagoner said. GM said it expects hybrid sales volumes to exceed vehicles per year. The system would build on GM s current hybrids reducing engineering costs and the cost to consumers the company said. The battery system would be mated to a wide range of GM engines including turbocharged gasoline diesel and bio fuel powerplants. GM said in a statement that the new hybrid system would save fuel by turning the engine off at idle and cutting off fuel duri! ng deceleration. It would offer brief electric only power the company said in a statement. AP Auto Writer Tom Krisher in Detroit contributed to this report. Read all comments MORE STORIES IN Markets Toyota Executives to Retire NaviSite Sees Q Sales Bewow Street Cowen CEO Retires Successor Named US Bancorp CEO Gets

Source: http://www.chron.com/disp/story.mpl/hotstories/5591572.html


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