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ji wu yuan di
Pages: 29
Year: Issue:  1
Journal: Farm Machinery

Keyword:  气门间隙发动机冒黑烟气缸套摇臂轴衬套磨损供油时间柴油机起动配气凸轮润滑油孔;
Abstract: <正> 1.发动机突然冒黑烟 -F170柴油机起动运转一段时间后突然冒黑烟,加大油门时冒烟加重。首先,检查供油时间和气缸压力,均未发现异常。打开气门室罩盖检查,发现进气门间隙过大,是什么原因使气门间隙增大了呢? 检查配气凸轮、气门挺杆和推杆、气门调整螺栓和摇臂小端均未有异常磨损。再仔细察看发现:摇臂衬套磨损严重,且衬套的润滑油孔与摇臂油孔错位,摇臂衬套在其孔内发生位移。拆下衬套时又发现,能
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