一、磨损的特征在增压四冲程柴油机中,随着增压度的提高,平均有效压力也愈来愈高,进气阀和阀座的磨损也日趋严重。因此,国内外对进气阀和阀座的磨损逐步得到了重视,在我厂生产的12V180ZL 型柴油机上也同样遇到了这个问题。经过数百小时的运转,不但阀座磨损剧烈及偏磨,而且气阀锥面也被磨成严重的凹槽(见图1,2,3);最严重时,运转530小时,磨损量竟达2.38毫米。 First, the wear characteristics In the supercharged four-stroke diesel engine, as the booster degree increases, the average effective pressure is also getting higher and higher, intake valve and seat wear is also increasingly serious. Therefore, at home and abroad on the intake valve and seat wear has gradually been taken seriously in our factory production 12V180ZL diesel engine also encountered this problem. After hundreds of hours of operation, not only the valve seat wear violent and partial wear, but also the valve cone was also ground into a serious groove (see Figure 1,2,3); the most serious, running 530 hours, the amount of wear actually Up to 2.38 mm.