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Chrysler Pentastar V6 engine begins production – Click above for high-res image gallery

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With the ENVI electric vehicle group disbanded, the engineers at Chrysler will need to resort to old-fashioned efficiency improvements to meet upcoming federal CAFE regulations for cleaner vehicles. That's just what the company has in store to show off this week at the Detroit Auto Show with three new powerplants that it says will improve fuel economy by 25 percent by 2014. The three engines on display in Detroit are:

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Fiat's advanced Multiair technology could be an easy port to Chrysler's powertrains as the companies move ahead together. "It is low-invasive hardware" said Lucio Bernard of Fiat Powertrain Technologies, the division of the Italian automotive conglomerate tasked with developing the parts that make the cars go.

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Fiat's advanced Multiair technology could find its way under the hood of future Chryslers as the companies move ahead together. "It is low-invasive hardware" said Lucio Bernard of Fiat Powertrain Technologies, the division of the Italian automotive conglomerate tasked with developing the parts that make the cars go.

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While the 2011 Jeep Grand Cherokee wowed the crowds in New York, what lies beneath could be a key to Chrysler's recovery. The new 3.6-liter V6, called Pentastar after the company's five-pointed-star logo, replaces seven – count 'em, seven – of Chrysler's aging engines, and stands as the outcome of several years of development.

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