The Piaggio Group announced the 2012 Vespa LX and Vespa S scooters will come equipped with the company’s next-generation three-valve engine.
The new “3V” engine, available in 125 and 150 iterations, was first introduced in the Vespa 946 concept at the 2011 EICMA show in Milan. The air-cooled fuel-injected four-stroke Single-cylinder engine was designed at Piaggio‘s Pontedera plant with a focus on improving fuel economy and reducing emissions without sacrificing performance.
A key goal for the designers was reducing friction and improving fluid dynamics. The engine uses a new crankshaft with reduced friction on the cam axle bearings and roller rockers. Piaggio says it decided on a three-valve system (two intake, one exhaust) because it improves the fuel mixture. The spark plug is now located in a new position to improve cooling in the cylinder head.
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