液压挖掘机发动机过热故障分析及优化改进  

Overheat Analysis and Optimal Improvement for Hydraulic Excavator Engine

作　　者：刘浩 甘新贵 孙宝舟 

机构地区：[1]常林股份有限公司

出　　处：《工程机械》2012年第5期55-58,9,共4页Construction Machinery and Equipment

摘　　要：液压挖掘机普遍采用水冷式柴油发动机,发动机过热将影响整机的使用性能,并且会迅速降低发动机的使用寿命。通过对小批量液压挖掘机发动机出现的过热故障进行分析在不更换散热器,不更改风扇直径及转速的前提下,对相关部件做一系列优化改进,最终使散热效果达到理想状态,发动机过热故障得到解决。Hydraulic excavator generally adopts a water-cooled diesel engine that over heat in the engine will affect operational performance of the whole machine and would rapidly reduce work life length of the engine. Through a trouble analysis of over-heat in the engine, coveting a small batch of hydraulic excavator, we made a serial improvements to the components concerned on the precondition that no change or alteration is done to the radiator, diameter and/or rpm of the fan. Eventually, the radiation effect attains its realistic state, thus solving over-heat troubles with the engine.

关 键 词：发动机过热 热平衡 散热系统 优化改进 

分 类 号：TU621[建筑科学—建筑技术科学]