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Ningbo Haishu YinLian Machinery Co.,Ltd

Main wear locations of Bitzer 4HE/6HE piston

(Summary description)The biggest wear part of Bitzer 4HE/6HE piston is the wear of piston ring groove. The main reason is that the pressure of gas increases the unit pressure of the piston ring on the ring groove.

Main wear locations of Bitzer 4HE/6HE piston

(Summary description)The biggest wear part of Bitzer 4HE/6HE piston is the wear of piston ring groove. The main reason is that the pressure of gas increases the unit pressure of the piston ring on the ring groove.

Information

The biggest wear part of Bitzer 4HE/6HE piston is the wear of piston ring groove. The main reason is that the pressure of gas increases the unit pressure of the piston ring on the ring groove. At the same time, the piston makes a great impact on the ring groove due to the high-speed reciprocating movement of the piston. In addition, the high temperature of the combustion gas makes the piston head The working temperature is high, and the closer to the top of the piston, the higher the temperature and gas pressure.

Bitzer 4HE/6HE piston

Therefore, the wear Z of the first ring groove is serious, and the wear of the following ring grooves is gradually reduced. The wear of the ring groove is mainly on the lower plane, and the upper plane is less worn, so that the ring groove is worn into a trapezoid with a small inside and a large outside, which increases the side clearance of the piston ring, causing air blow-by and engine oil blow-by in the cylinder.

The head of Bitzer 4HE/6HE piston rarely comes into contact with the cylinder wall due to the supporting effect of the piston ring during operation, and its wear is very small.

Although the skirt of Bitzer 4HE/6HE piston is in contact with the cylinder wall, the pressure per unit area is not large and the lubrication conditions are good, so there is less wear. Usually, the side that bears the lateral force is prone to wear and abrasion. When the gap between the piston skirt and the cylinder wall is too large, the engine is prone to cylinder knock and severe oil blow-by. Therefore, engine overhaul mainly depends on the gap between the piston and the cylinder wall and the degree of cylinder wear.

When Bitzer 4HE/6HE piston is in operation, due to the inertial force of gas pressure, the piston pin seat hole appears elliptical wear. The Z major wear part is the up and down direction of the seat hole, which makes the piston and pin loose, causing irregularities. Normal noise.

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