What are the functions of the two pipes on the valve cover of Wuling Glory?
The gas extracted from the crankcase is introduced into the intake pipe of the engine and sucked into the cylinder for re-combustion. This ventilation mode is called forced ventilation, and gasoline engines generally adopt this crankcase forced ventilation mode. In this way, the mixture escaping into the crankcase can be recycled, which is beneficial to improve the economy of the engine.
The first one is connected with the subsequent air branch pipe, and this end has a PVC valve (also called crankcase forced ventilation valve), which is a one-way valve. The exhaust gas generated by the crankcase is pumped into the intake branch pipe and burned by the vacuum negative pressure generated after the other end is connected with the intake branch pipe.
The second one is for air intake, and the other end is connected to the bellows connected to the throttle valve of the air grille, which is directly connected to the atmosphere.
Extended data valve guide function
The valve guide is the guiding device of the valve of the automobile engine, which plays a guiding role on the valve and transfers the heat on the valve stem to the cylinder head through the valve guide.
Installation of valve guide
After machining, press the inner and outer cylindrical surfaces of the valve guide into the valve guide hole of the cylinder head or cylinder block, and then finish machining the inner hole. In order to prevent axial rotation, there is a snap ring positioning groove, which is matched with the positioning snap ring to prevent the catheter from moving and falling into the cylinder during work. Generally, there is a slight gap between the valve stem and the valve guide, so that the valve guide can move freely in the guide. Valve guide has high working temperature and poor lubricity, and is generally made of cast iron or iron-based powder metallurgy with high graphite content.