有内胎式轮胎气门是直接做在内胎上的，无内胎式轮胎的气门安装在轮毂上。

On the tire with an inner tube, the valve is mounted on the tube. On the tubeless tire, the valve is mounted on the wheel rim.

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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.

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