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AUTONET記者：蔡致堅(10/22/2007星期一)
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自從環保法規越來越嚴苛，強調短跑衝刺的二行程機車已經完全絕種，但對於熱愛速度的騎士而言，二行程更可提供四行程引擎所沒有的樂趣，有鑑於此，日本HONDA正在開發全新系統，能同時擁有二行程的爆發力和四行程的平順度。
由HONDA所自行開發的VCM（Variable Cylinder Management）可變汽缸管理系統，不僅能獲得更為節省的燃油表現，且還能讓機車同時擁有二行程的衝刺爆發力，和四行程引擎順度加速的快感，也就是說一輛機車能具備二行程和四行程引擎的特性。其實HONDA之所以開發VCM系統，主要是為了滿足機車騎士的需求，基於受到新環保法規的約束，二行程早已消失，縱使對環保有殺傷力，但對騎士來說樂趣遠超過四行程機車。
所以HONDA就將運用在四輪乘用車上的技術，轉移到二輪機車的動力系統上。根據HONDA表示，VCM系統在低負重情況下進排氣氣門與燃料噴射系統處於休息狀態，可讓油耗表現更好；而在低轉速時則擁有類似二行程引擎的爆發力，當加速起步時絕對更優於四行程引擎，而高轉速時又獲得四行程引擎的平順基因，這可說是在強調油耗經濟性的同時，得以提供更多樂趣給機車騎士們。
當然這項新技術也將隨著東京車展的到來，在HONDA二輪機車展區現身，至於正式運用在量產機車上的時間，估計最快在2008年中以後。
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