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fa dong ji guo re gu zhang yuan yin fen xi yu zhen duan pai chu
Author(s): 
Pages: 26
Year: Issue:  6
Journal: Farm Machinery Using & Maintenance

Abstract: 发动机在使用中,常出现水温超过80~90℃,直至沸腾(水箱开锅)的异常现象.发动机一旦过热,将会导致缸套、活塞与活塞环变形,活塞环开口间隙顶死使活塞环翘曲引起活塞卡滞,致使缸塞无间隙摩擦,在高压下刮伤缸壁和增加缸壁磨损.润滑油因高温烧结,形成无润滑摩擦;同时积碳增多,产生炽热,使工作混合气燃烧过程失去控制,动力性明显下降;还伴有排气管冒黑烟、工作不稳、动力不足.此故障是因发动机过热引起的恶性循环,将严重损坏发动机.
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