How to test the performance of Petrol Car parts?

Roewe Car are the means of transportation in our daily lives, so we must pay more attention to Roewe Car parts. So how to test their performance when purchasing.

1. Engine cylinder sealing test of Petrol Car parts
There are 7 factors that affect the air tightness of the cylinder, including cylinder wear, piston ring damage, piston wear, valve seat damage, valve guide wear, cylinder gasket damage, valve clearance and other issues.
What are the common diagnostic methods? It mainly measures cylinder pressure, crankcase air leakage, cylinder air leakage and air leakage rate, intake pipe vacuum, and vibration measurement of abnormal noise caused by excessive wear of the cylinder and piston group. Wear metal in the crankcase is a measure of the particle content.
To measure cylinder compression pressure, it is primarily the pressure at the end of compression in a four-stroke engine. Cylinder-piston group diagnosis can be performed when measuring engine pressure due to factors such as cylinder pressure and oil viscosity, cylinder-piston group matching, whether the valve train is adjusted correctly, and the sealing of the head gasket. If the piston rings, valves and cylinder gaskets of Roewe Car parts are well sealed, the valve clearance must be appropriate.
2. Robustness test of Petrol Car parts
The muffler consists of an outer cylinder and an inner honeycomb. Due to the special environment (such as high temperature, vibration), the two parts are combined through mechanical wrapping technology. As we all know, the quality of this process depends on the accuracy of the design. If the connection is not strong, it will loosen or fall off due to high temperature, vibration and other factors. But let us rest assured that the quality-first department imposes quite stringent requirements on this technology.
As for the actual testing method, the testing tools in the industry use a universal material testing machine with a pressure plate fixation device, so that the two parts of the muffler are subjected to upper and lower shear forces. The repeatability error of measurement results should be less than 5%.
3. Indoor inspection
The interior of Petrol Car parts includes seat molding materials, interior materials, and adhesives for bonding. Mainly test its safety: hazards of gas; flame retardancy.