Lighter weight than four-stroke engines.

比四冲程发动机重量更轻。

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Less costly to manufacture than four-stroke engines.

比四冲程发动机制造成本更低。

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See How Two-stroke Engines Work for more information.

更多信息见二冲程发动机工作原理。

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Conventional four-stroke engines produce power by moving a piston up and down using rapid explosions of fuel and air in a cylindrical chamber.

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EcoMotors and Achates are developing two-stroke, opposed piston diesel engines while Pinnacle is working on a four-stroke opposed piston gasoline engine.

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Known for its four-stroke 90-degree V-twin engines and its unique valve design, Ducati has carved out an impressive racing record, highlighted by its 2007 Grand Prix World Championship win.

WSJ: At the Heart of Ducati