顶置凸轮轴

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。

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

本文在国内外VVT技术的基础上，设计了一种适合中、小排量摩托车发动机单顶置凸轮轴VVT机构。

Variable valve timing ( VVT ) mechanism of switching cam profile was developed for the small-medium displacement motorcycle engines .

为了提高动力特性，现代高速发动机一般都采用了顶置凸轮轴（OHC）式配气机构。

Overhead cam ( OHC ) valve train has been widely adopted in modern high-speed internal-combustion engines for better dynamic characteristics .

近代摩托车用汽油机普遍采用顶置凸轮轴结构（OHC）和组合式气门弹簧。

The overhead camshaft ( OHC ) and combination valve spring structure are in common use in modern motorcycle gasoline engine .

在摩托车发动机单顶置凸轮轴配气正时机构的结构形式基础上，研制一种可切换凸轮型线的VVT机构，具有2套可切换的进气配气正时参数。

A variable valve timing ( VVT ) mechanism with switching cam is developed on a motorcycle engine with single overhead camshaft . The VVT mechanism has two sets of switchable intake valve timing parameter .

我国摩托车发动机主要集中在中小排量（50ml～250ml）范围内，且多采用单顶置凸轮轴配气机构。

In China , large proportion of motorcycle engine displacement is narrow in the range of Small-medium displacement ( 50ml ~ 250ml ), and much of motorcycle engine valve train structure is Single Over Head Cam ( SOHC ) structure .

基于摩擦学的顶置凸轮轴式配气机构改进设计

Optimization Design of Overhead Camshaft Valve Train Based on Tribology

分布：两个顶置凸轮轴，16气门。

Distribution : two overhead camshafts , 16 valves .

顶置凸轮轴式配气机构设计的若干问题

Some Problems about Designing Valve Train for OHC

顶置凸轮轴气门机构的分析与综合

An Analysis of Overhead Camshaft Valve Structure

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。

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

上海别克V6发动机配气机构为气门顶置、凸轮轴上置式，以齿形皮带同步传动。

The valve mechanism of the V6engine of passenger car BUICK is overhang valve , overhang camshaft type ad driven synchronized with tooth-shaped belt .

该系统适合于顶置双凸轮轴车用高速汽油机。

This VVT system is suitable for high-speed automotive gasoline engines with DOHC .