我单位1台GJW111型轮胎式挖掘机,完成大修后试车时出现柴油机无力故障,在双泵合流供油状态下空载提升大臂时,动作稍快一点柴油机就熄火。而单泵供油状态下,柴油机转速、声音及烟色等均正常。该挖掘机柴油机大修后经过测功仪严格检测合格后交付总装,柴油机内部存在故障的可能性不大,故只对 One unit of GJW111 type wheel excavator in our company failed to perform a power failure when the diesel engine was overhauled. When the double-pump confluent fuel supply was used to raise the boom with no load, the engine was turned off slightly faster. In the single-pump oil supply state, the engine speed, sound and smoke are normal. After the overhaul of diesel engine of this excavator has passed the rigorous testing of the dynamometer, it will be delivered to the final assembly. It is unlikely that there is a fault inside the diesel engine.