活塞偏缸的检查与分析

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活塞偏缸是指活塞在气缸内,特别是在上、下止点与中间位置时,不能处于居中位置,即活塞外圆柱表面一侧与缸壁无间隙,另一侧则间隙过大.很显然,活塞偏缸不仅会造成活塞、缸套偏磨,严重影响其使用寿命,还会因一侧间隙过大影响气缸的密封性能,使发动机的起动性能与功率性能下降.
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