W多功能客车在试制阶段及路试过程中出现车速达到100公里/小时左右,转速表在3000转/分左右时,出现断油现象,并且仪表故障指示灯不点亮,其它显示一切正常。在该速度和转速范围以下的其它速度和转速行驶时车辆的工作状态均正常。本文通过对该车型可能涉及到的部件及该车型特有的功能和特点进行分析,查明问题的真正原因,提出解决措施,验证解决效果。 W multi-functional passenger car in the trial stage and road test appeared speed reached 100 km / h or so, tachometer at 3000 rpm / min, the phenomenon of oil off, and the instrument fault indicator does not light, the other shows that everything is normal. The vehicle operates at other speeds and speeds below this speed and speed range. This article analyzes the possible components and the unique functions and features of the model, identifies the real cause of the problem, proposes solutions and verifies the solution effect.