Performance test of auto parts
Published on:
2022-01-27
There are seven factors affecting the sealing performance of the cylinder, mainly including cylinder wear, piston ring damage, piston wear, valve seat damage, valve guide wear, cylinder gasket damage, valve clearance, etc.
1、 Engine cylinder sealing test
There are seven factors affecting the sealing performance of the cylinder, mainly including cylinder wear, piston ring damage, piston wear, valve seat damage, valve guide wear, cylinder gasket damage, valve clearance, etc.
What are the common diagnostic methods? It mainly includes the vibration measurement of cylinder pressure, crankcase blowby, cylinder leakage and leakage rate, intake pipe vacuum, abnormal noise caused by cylinder piston group due to excessive wear. The wear metal in crankcase is the measurement of particle content.
For the measurement of cylinder compression pressure, it is mainly the pressure at the end of compression of the four stroke engine. Because of the cylinder pressure, oil viscosity and cylinder piston set, whether the adjustment of the valve distribution mechanism is correct, cylinder gasket sealing and other factors, when measuring the pressure of the engine cylinder, the sealing condition of the cylinder piston set can be diagnosed. If the piston ring, valve and cylinder gasket are well sealed, the valve clearance should be appropriate.
2、 Silencer firmness test
The silencer is composed of an outer cylinder and an inner honeycomb part. The two parts are combined by mechanical buckle wrapping process due to high temperature, vibration and other special environments. If the combination is not firm, it will become loose or fall off due to high temperature, vibration and other factors. However, we can rest assured that the relevant quality departments have put forward quite strict requirements for this technology.
For the actual testing method, the testing tools in the industry are all material testing machines and compression disc clamps, so that the two components of the muffler are subjected to the upper and lower shear forces. The repetition error of the measured results shall be less than 5%.
3、 Interior inspection
The interior trim includes seat bonding materials, interior box decoration materials and adhesive.
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Chongqing Guanlei Auto Parts Co., Ltd
Email: 674169002@qq.com
Address: 3-1, Unit 1, Building 5, No. 9, Gangning Road, Jiangbei District, Chongqing