What Are The Performance Tests For Auto Parts?

Performance testing of Auto Parts:

First, the engine cylinder seal test.

There are seven factors affecting the cylinder sealing performance, mainly including cylinder wear, piston ring damage, piston wear, valve seat damage, valve guide wear, cylinder head gasket damage, valve clearance and other aspects.

What are the commonly used diagnostic methods? There are mainly measurement of cylinder pressure, crankcase xenon gas volume, cylinder air leakage and air leakage rate, intake pipe vacuum degree, and abnormal vibration of cylinder piston group due to excessive wear. The wear metal in the crankcase is the particle content. Determination.

For the measurement of the cylinder compression pressure, it is mainly the pressure at the end of the four-stroke engine compression. Due to the pressure of the cylinder, the viscosity of the oil and the cylinder piston set, the adjustment of the valve train is correct, the sealing of the cylinder head and other factors, so when measuring the pressure of the engine cylinder, the cylinder piston can be diagnosed. In the case of sealing, if the piston ring, valve, and cylinder head gasket are well sealed, the clearance of the valve must be appropriate.

Second, silencer robustness test.

The muffler is composed of an outer cylinder and an inner honeycomb piece, and the two parts are combined by a mechanical buckle process because of the special environment such as high temperature and vibration. We know that the quality of this process depends on the precision of the design. If the combination is not strong, it will loose or fall off due to high temperature, vibration and other factors in the car. But let us rest assured that the relevant quality first department has put forward quite strict requirements on this technical aspect.

For the actual testing method, the testing tools in the industry use the universal material testing machine, and the anti-pressure plate clamp is used to make the two components of the muffler receive the relevant shear force. The measured result repeat error should be less than 5%.

Third, the interior inspection.

The interior includes the seat forming material, the interior trim material and the bonding adhesive. Mainly to test its safety: 1. Gas harmfulness 2. Flame retardancy.

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