SOHC

The mathematical model about the characteristic of high order polynomial dynamic cam for the overhead camshaft of high-speed gasoline engine is built and the computing formulas of correlative coefficients are given.

针对高速汽油机顶置凸轮轴的设计,建立了高次方多项式描述动力凸轮特性的数学模型,并给出了相关系数的计算公式,最后根据数学模型对一台汽油机的凸轮型线进行了优化。

The focus is on the definition, status quo of research and application of valve train in the overhead camshaft.

本文论述了高速柴油机中配气机构优化设计方法的概念、种类、研究内容及其应用，重点阐述了顶置凸轮轴式配气机构的定义、研究现状与应用。

Owing to the fact that the rocker arm ratio of OHC valve train was variable,three measures were adopted for raising the calculation precision.

由于顶置凸轮轴式配气机构的摇臂比是变化的,为提高计算精度,采取了3项措施:根据凸轮升程数据求取气门理论升程数据并对该数据进行曲线拟合;将从动件的升程曲线分为缓冲段和工作段分别进行曲线拟合;将最优化计算和最小二乘法相结合对工作段进行曲线拟合。

These engines are known as dual overhead camshaft( DOHC) engines.

这些发动机被称为双顶置凸轮轴(OHC)动机。

Optimization Design of Overhead Camshaft Valve Train Based on Tribology

基于摩擦学的顶置凸轮轴式配气机构改进设计

In addition, when the camshaft is located over the cylinder head, the arrangement is known as an overhead camshaft( OHC) design.

另外，当凸轮轴位于汽缸盖上面时，这种方式被称为是顶置凸轮轴(HC)构。

Push-rod engines typically run at slower speeds and, consequently, produce less horsepower than overhead-camshaft designs of equal size.

推杆发动机一般在低速运转，从而产生比相同大小的顶置凸轮轴较少功率。

New Mitsudishi 5-Valve DOHC Engine

三菱新型顶置双凸轮轴5气门发动机

cam shaft driving gear

凸轮轴传动齿轮凸轮轴传动装置

The camshaft also fits inside the block, except on overhead-cam engines( OHC).

除了顶置凸轮(HC)动机以外，凸轮轴都安装在气缸体里面。

cam shaft drive

凸轮轴传动凸轮轴传动装置

overhead camshaft engine

上置式凸轮轴发动机

cam shaft reversing lock

凸轮轴换向闭锁装置

RESEARCH ON THE DYNAMIC PERFORMANCE OF MARINE DIESEL ENGINE 180 TYPE VALVE MECHANISM WITH CAM-SHAFT ON CYLINDER HEAD

船用180柴油机顶置式凸轮轴配气机构动力性能的研究

overhead cam shaft

上凸轮轴上部凸轮轴

As the camshaft continues to rotate, the high spot moves way from the valve mechanism.

因为凸轮轴继续旋转，凸轮轴上的凸起部分离开气门装置。

camshaft(journal )turning lathe

凸轮轴（轴颈）车床

As the camshaft rotates, the lobe, or high spot of the cam, pushes against parts connected to the stem of the valve.

当凸轮轴旋转时，凸轮凸起的或者高点的位置，推动气门座。

Research on OHC Valve System of Vehicle s Engine;

车用发动机顶置凸轮配气系统的研究

The camshaft has a cam, on which there is a lob, or bump.

凸轮轴上有一个凸轮，凸轮上有一个凸角。

crankcase cam gear bushing

曲轴箱凸轮传动轴衬套