一台EQ6100-1型汽油发动机,经大修后试机时排气管冒浓烈白烟的故障,经多方检查试验,发现通风单向阀装反。因为该阀装反后,就不受进气管真空度的控制,而始终处全开状态,而试杌时,节气门开度一般都较小,进气管内的真空度则很大,这时曲轴箱内的杌油就源源不断地通过单向阀被吸入气缸,尚未燃烧的机油附着在火花塞的两电板上,尤其是三、 An EQ6100-1 gasoline engine, after the overhaul of the test machine when the exhaust pipe to take a strong white smoke failure, the multi-party inspection test found that the ventilation check valve fitted anti. Because the valve installed after the anti-vacuum degree of intake pipe will not be controlled, and always at full open state, and try 杌, the throttle opening is generally small, the intake pipe is a great vacuum, then Solenoid oil in the crankcase on a steady stream through the one-way valve is sucked into the cylinder, unburned oil attached to the two spark plugs, especially the three,