本文介绍气门调整的基本要求与气门实际调整位置(着火次序)的确定方法。气门间隙的必要性因为混合气燃烧时气门本身产生热膨胀,如果没有机械间隙,则在热态时使气门顶起。为了防止发生这种现象,制造厂规定了适当的气门间隙。当气门间隙大于规定值时,将产生噪声,而小于规定值时,气门顶起后,造成慢速时发动机震动。通常,因排气门比进气门承受较多的热 This article describes the basic requirements of valve adjustment and valve actual adjustment position (ignition order) to determine the method. The need for a valve clearance is due to the thermal expansion of the valve itself during the combustion of the mixture. If there is no mechanical play, the valve is lifted in the hot state. To prevent this from happening, the manufacturer specifies the appropriate valve clearance. When the valve clearance is greater than the specified value, it will produce noise, and less than the specified value, valve lift, causing slow engine vibration. Normally, the exhaust valve receives more heat than the intake valve