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Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.

Porsche plans four-door Panamera convertible

A series of European and U.S. patent applications obtained by AutoWeek show that Porsche remains committed to building a four-door convertible version of its flagship Panamera, despite recent comments from Zuffenhausen insiders indicating the car had been canceled. The new car, depicted in official drawings that accompany the latest Porsche patent applications filed in February, eschews the two-door route taken by all of its upmarket rivals for a four-door body.

Fisker expects to partner with automakers

Fisker Automotive's CEO, warning of the pitfalls facing independent small automakers, says the luxury plug-in hybrid manufacturer is poised to partner with other automakers next year. Tony Posawatz, Fisker's CEO and former chief engineer of the Chevrolet Volt, told Automotive News that Fisker is in talks for three potential deals in which executives at the "highest levels" of the companies involved are "talking specifics." "We are absolutely committed to making this company win longer term, and the history of smaller companies living on their own in the automotive business is not stellar," Posawatz said in an interview. "We are not going to go it alone." Posawatz said alliance deals could be completed within the next year.