overhead valve

基本解释

Harley - Davidson introduces the EL, an overhead valve, 61 cubic inch powered bike.
哈雷戴維森推出了配置頂置氣閥和61立方英寸發動機的EL型摩托車。
The company with advanced technology is known, have been the first overhead valve, turn signal lamp, stained glass, automatic transmission technology.
該公司以技術先進著稱，曾首創頂置氣門、轉曏信號燈、染色玻璃、自動變速器等先進技術。
xkyn.net
In this paper the designing methods and alternative eonstructional versions of cylinder beads for four-stroke overhead valve direct injection diesel engines are presented.
介紹了四沖程直接噴射式柴油機頂置氣門缸蓋的設計方法及各種可供選擇的設計方案。

It's an overhead valve engine with a single camshaft that uses push rods to open and close the 16 valves.
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But it also had some non-original parts, including Model A cranks and rods, an overhead valve unit built for 1920s dirt-track racing and dual carburetors from the 1930s.
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