Diesel engine has spaced apart circular channels or saw teeth formed within valve guide socket
摘要
<p>Spaced apart circular channels (13-15) or saw teeth are formed to the inner periphery of a valve guide socket (6). Each channel defines a gap between the valve guide socket inner periphery and a intake/exhaust valve stem (7), and has a depth of 0.1 to 2.5 millimeters.</p>
