论文部分内容阅读
我场所用的E512/514型联合收割机,使用5年以后,出现了发动机机油压力偏低的故障。经检查分析,大致有以下几种原因: (1) 限压阀弹簧较长,但无导向装置,易偏斜;长期使用后弹簧弹力减弱。 (2) 限压阀钢球与阀座接触面严重磨损。 (3) 我场地处北纬49°,10月间早、晚气温即降至零下,收大豆就在这个季节进行,发动机低
E512 / 514 type combine harvester used in my place, after 5 years of use, appeared the problem of low engine oil pressure. After the inspection and analysis, there are roughly the following reasons: (1) pressure limiting valve spring longer, but no guide device, easy to deflect; after long-term use spring weakened. (2) pressure limiting valve ball and seat contact surface serious wear and tear. (3) My field is located at latitude 49 ° north and the temperature in early October and late October is reduced to below zero. Soybean harvest is carried out in this season. The engine is low