PCV的全称是:positive crankcase ventilation,The PCV Valve, or Positive Crankcase Ventilation valve is an emission control device that routes unburned crankcase blowby gases back into the intake manifold where they can be reburned.8 s! U: B* a X- C* I
The PCV system is one of the oldest emission control devices, and also one of the most beneficial. Besides totally eliminating crankcase emissions as a source of air pollution, the constant recirculation of air through the crankcase helps remove moisture which otherwise would cause sludge to form. * _: p: P2 d4 i1 U; T* Z ( `* B2 @# w* Q% U e7 S0 ]) ^Thus the PCV valve extends the life of the oil and engine. The PCV valve requires little maintenance. The valve and filter should be replaced somewhere around 30,000 to 50,000 miles(see the vehicle owners manual for service intervals).
Originally posted by 社员都是向阳花 at 2005-1-17 12:27 PM: 1 E. I2 J/ ~1 b( U7 |有一个简单的办法检查PCV VALVE,在IDLE的情况下,用PLIER将连接PVC的HOSE夹扁,注意在HOSE外包快布,免得把HOSE夹坏了,如果夹扁后有CLICK SOUND,说明VALVE是好的,如果夹了也没反应,说明VALVE坏了.去买个新的换上去就 ...
- q" v1 f8 w) Q% c& C. U 4 ]! f# `% ]1 |' l4 w+ ?) g现在问题是打开车前盖,我就认识一个发动机。。