The valve mechanism of the V6engine of passenger car BUICK is overhang valve, overhang camshaft type ad driven synchronized with tooth-shaped belt.
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。
2
The tower typebeltdriven long stroke pumping unit is composed of the crank-linkage-slide mechanism, movable pulley-narrow belt-fixed pulley mechanism and compound drum stroke-increment mechanism.