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东风型内燃机车柴油机活塞在运用中由于各种因素的影响,导致内外套裂纹而报废的数量日益增多。自1975年4月至12月,从对137台大修柴油机的统计资料中看出,活塞内外套因其裂纹而报废的有481个(更换率达17.58%),最多的在一台柴油机上就有16个内套发生裂纹。活塞外套因裂纹而报废的有171个(更换率达6.97%),最多的在一台柴油机上就有13个外套发生裂纹。为了防止或减少L207E型柴油机在运用中
Due to the influence of various factors in the operation of the diesel engine piston of the Dongfeng diesel locomotive, the number of scrapped inner and outer sleeves is increasing. From April to December 1975, statistics from 137 diesel engines overhauled showed that 481 piston inner and outer sleeves were scrapped due to their cracks (the replacement rate was 17.58%), and most of them were on a diesel engine There are 16 inner sleeve cracks. There were 171 piston jackets scrapped (6.97% replacement rate), and up to 13 jackets cracked on a single diesel engine. In order to prevent or reduce the L207E diesel engine in use