overhead valve

基本解释

Harley - Davidson introduces the EL, an overhead valve, 61 cubic inch powered bike.
哈雷戴维森推出了配置顶置气阀和61立方英寸发动机的EL型摩托车。
The company with advanced technology is known, have been the first overhead valve, turn signal lamp, stained glass, automatic transmission technology.
该公司以技术先进著称，曾首创顶置气门、转向信号灯、染色玻璃、自动变速器等先进技术。
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.
介绍了四冲程直接喷射式柴油机顶置气门缸盖的设计方法及各种可供选择的设计方案。

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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