Auto parts are a product that constitutes each unit of the car as a whole and serves the car. There are many kinds of auto parts, with the improvement of people's living standards, people's consumption of cars is also increasing, and the market of auto parts is becoming more and more large. In recent years, auto parts manufacturers are also developing rapidly. First, engine cylinder sealing test
There are seven factors affecting the sealing of the cylinder, mainly cylinder wear, piston ring damage, piston wear, valve seat damage, valve guide wear, cylinder gasket damage, valve clearance and other aspects of the problem.
What are the common diagnostic methods? The main measurement cylinder pressure, crankcase gas channelby, cylinder leakage and leakage rate, intake pipe vacuum, cylinder piston group due to excessive wear caused by abnormal vibration measurement, crankcase wear metal is the determination of particle content.
For the measurement of cylinder compression pressure, it is mainly the pressure at the end of four-stroke engine compression. Due to the cylinder pressure and the viscosity of the oil and the cylinder piston group, the adjustment of the valve mechanism is correct, the sealing of the cylinder pad and other factors, so, when measuring the pressure of the engine cylinder, you can diagnose the seal of the cylinder piston group, if the piston ring, valve, cylinder pad seal is good, then the valve clearance must be appropriate.
