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令人激賞的引擎，Honda S2000 2L DOHC I-4
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AUTONET記者：davis(07/25/2000星期二)
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8900轉的紅線區實在是令人興奮莫名
當HONDA S2000的轉速表指針略過6000轉後，任何人都無法忽視那狂暴的動力輸出。當右腳死命地踏在油門上，兩千c.c.的DOHC VTEC直列四缸引擎爆發出猛烈的聲浪，吸引著你及路人的注意。
這具引擎發起威來，比任何的野生動物都還要狂野，簡直不像是一具人類所製造的工藝品。與其說他是一具汽車用引擎，不如說他是一具超大排氣量的機車引擎。我們承認，他的運轉聲浪對耳朵的影響可能不太適合天天駕駛，因為不是受不了那高昂狂放的聲浪，就是會深深的愛上而陷入不可自拔。再來複習一下VTEC 這套HONDA的獨門暗器，這種兩段式的汽門開啟機構控制著進排氣門，他能在效率、廢氣排放、及性能間取得一個平衡點。換句話說，VTEC可以兼顧油耗及廢氣排放。
然而，HONDA的工程師表示，S2000這具引擎上的VTEC只針對性能做最佳化，一切都只為高轉速下的性能表現而來。這具輸出240匹的VTEC兩公升四缸引擎不只展現了高轉速時驚人的進排氣效率，其每公升120匹的輸出更是所有量產車引擎之最。
為了忍受如此高轉速下的輸出，S2000採用了鍛造的連桿，中空而剛性強的曲軸能夠提供充足的潤滑給VTEC機構，凸輪軸則以較不佔空間的齒輪來驅動。S2000引擎的汽缸壁使用一種特別的碳纖維及陶瓷的混合物材質，不僅質輕，而且有助傳熱。相對於S2000無可挑剔的高轉速表現，其低轉速表現就不是那麼的令人滿意。但是只要轉速一過六千轉，那種洶湧澎湃、無邊無際的動力立刻讓你忘掉他低轉速的表現。隨著轉速的再升高，一山還有一山高的馬力彷彿無止境的灌注到後輪上，直到九千轉為止。HONDA的工程師號無疑問的創造了世界上最刺激的四缸引擎。
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HONDA 美日/本田S2000
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