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我市自1991年以来,先后购买佳木斯联合收割机厂生产的JL1065B_1型联合收割机80台,配套动力是北京内燃机总厂生产的F6L913L风冷式发动机,但1993年麦收期间,7台发动机出现多次拉缸现象,严重时活塞部分熔化、断裂。还有一部分发动机逐渐表现出工作无力、机油消耗增多等现象,耽误了麦收,带来了不小损失。 一、故障前兆与拆检结果 发动机在出现故障之前,主要表现为动力性能下降、工作无力、机油消耗增加,继而出现自动停转现象,再次起动,发动机曲轴不能转动(故障轻
Since 1991, our city has purchased 80 sets of JL1065B_1 combine harvesters manufactured by Jiamusi Combine Harvester Plant. The supporting power is the F6L913L air-cooled engine produced by Beijing Internal Combustion Engine Plant. However, during the harvest of 1993, 7 engines appeared Less cylinder phenomenon, the piston part of the serious melting, fracture. Another part of the engine gradually showed weak work, increased oil consumption and other phenomena, delayed the wheat harvest, brought no small loss. First, the fault precursors and demolition results Before the engine failed, the main performance decline in power performance, weak work, increased oil consumption, followed by automatic stop phenomenon, start again, the engine crankshaft can not rotate (light fault