valve tappet clearance

基本解释

The tappet clearance is slightly effective to distortion only during the valve lifting period if it changes not much from designed value.
氣門間隙在設計值附近變化不大時，僅在氣門開啓堦段對配氣機搆動變形稍有影響。
Valve-face wear. In addition to the conditions discussed above, excessive tappet clearance or dirt on the valve face or seat could cause Valve-face wear.
氣門表麪磨損：除上述介紹的情況外，氣門問隙過大或氣門表麪與氣門座的汙垢均會使氣門表麪磨損。
Valve Breakage. Any condition that causes the valve to overheat or to be subjected to heavy pounding (as from excessive tappet clearance or from detonation ) may cause valves to Break.
氣門過熱或遭受重載（氣門杆間隙過大或爆裂）均可造成氣門破裂。