题目

英语翻译
Valve Gear
The valve gear provides timely admission of the fresh charge into the cylinders and exhaust of spent gases from them.The valves at definite moments open and close the intake and exhaust ports in the cylinder head,through which the cylinders communicate with the intake and exhaust manifold.Valves in modern car engines are located in the cylinder head at the top of the engine.This is known as an overhead valve (OHV) configuration.There are several different arrangements of camshafts on engines.
Single overhead camshaft (SOHC)
This arrangement denotes an engine with one camshaft per head.So if it is an inline 4-cylinder or inline 6-cylinder engine,it will have one camshaft; if it is a V-6 or V-8,it will have two camshafts (one for each head).The camshaft actuates rocker camshaft that press down on the valves,opening them.Springs return the valves to their closed position.These springs have to be very strong because at high engine speeds,the valves are push

提问时间：2021-01-09

答案

阀装置阀门齿轮提供及时承认的新鲜收费进入气缸和尾气排放的气体从他们度过.阀门在明确的时刻开启和关闭和进排气港口缸盖,通过气缸与进、排气歧管.阀门在现代汽车发动机缸盖位于顶部的引擎.这就是所谓的开销阀(OHV)...