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#38779 Jól van, kicsit eltúloztam :)Am meg:
"In 1958 Porsche made application for a German Patent, also applied for and published as British Patent GB861369 in 1959. The Porsche patent used an oscillating cam to increase the valve lift and duration."
"Fiat was the first auto manufacturer to patent a functional automotive variable valve timing system which included variable lift (1960)"
"Alfa Romeo was the first manufacturer to use a variable valve timing system in production cars (US Patent 4,231,330).[5] The fuel injected models of the 1980 Alfa Romeo Spider 2000"
"In 1987, Nissan was the first manufacturer to release an electronically-controlled VVT engine."
"In 1989, Honda released the VTEC system."
"In 1992, Porsche first introduced VarioCam"
És utána a többi, Toyota, BMW, Merci, Audi