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近年来,在中小型柴油机中,由于高速化和增压,强化指标大幅度提高,缸壁承受气体和机械冲击加剧;同时,为了减轻重量,活塞缩短、缸套减薄、缸体刚性相对下降,因此在剧烈振动下缸套的穴蚀现象已成为突出的问题。我局船用WOLAD型和6135Z型柴油机的缸套,都发生了这种穴蚀现象,严重影响航运。为此,我们进行了一些防穴蚀试验工作,取得了初步成果。缸套穴蚀的一般原因柴油机缸套外表面和缸体内表面浸水的某些部
In recent years, small and medium-sized diesel engines, due to high-speed and supercharger, a substantial increase in indicators, cylinder wall to withstand gas and mechanical shock intensified; the same time, in order to reduce weight, piston shortening, cylinder liner thinning, relatively rigid cylinder , So under severe vibration under the cylinder liner cavitation phenomenon has become a prominent issue. I ship marine WOLAD and 6135Z diesel engine cylinder liner, have occurred this phenomenon of cavitation, seriously affecting the shipping. To this end, we conducted some anti-cavitation test work and achieved initial results. Common causes of cylinder liner cavitation Some parts of the outer surface of the cylinder liner and the inner surface of the cylinder flooding