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Ningbo Haishu YinLian Machinery Co.,Ltd

What are the basic structures of Bitzer HE piston

(Summary description)Bitzer HE piston is a reciprocating part in the engine cylinder block. Its main function is to withstand the gas pressure in the cylinder and transmit this force to the connecting rod through the piston pin to push the crankshaft to rotate.

What are the basic structures of Bitzer HE piston

(Summary description)Bitzer HE piston is a reciprocating part in the engine cylinder block. Its main function is to withstand the gas pressure in the cylinder and transmit this force to the connecting rod through the piston pin to push the crankshaft to rotate.

Information

Bitzer HE piston is a reciprocating part in the engine cylinder block. Its main function is to withstand the gas pressure in the cylinder and transmit this force to the connecting rod through the piston pin to push the crankshaft to rotate. The basic structure of the piston can be divided into three parts, the top part, the head part and the skirt part, which will be introduced separately below.

Bitzer HE piston

1. The shape of the top of the Bitzer HE piston is related to the selected combustor-shaped engine piston connecting rod group form. The top of the gasoline engine piston is mostly flat. Its advantage is that the heat absorption area is small and the manufacturing process is simple. Some gasoline engines use concave top pistons in order to improve the formation and combustion of the mixture. The top of the piston should be processed smoothly. In some engines, in order to reduce the thermal load on the top of the piston, ceramics are sprayed on the top of the piston, which can resist high temperature, prevent corrosion and reduce heat absorption.

2. The head of the Bitzer HE piston is the part above the piston ring groove. Its main functions are: ① bear the gas pressure and transmit it to the connecting rod, ② realize the seal of the cylinder together with the piston ring; ③ pass the heat absorbed by the top of the piston The piston ring is passed to the cylinder wall, and the head is cut into the ring for installing the piston ring. The gasoline engine has 2 to 3 ring grooves. The upper 1 or 2 grooves are used to install the gas ring, and the lower one is used to install the oil ring. Many radial small holes are drilled on the bottom surface of the oil ring groove, so that the excess oil scraped from the cylinder wall by the oil ring can flow back to the oil pan through these small holes. The head of the piston is generally made thicker, so that heat is transferred from the top of the piston to the cooling wall of the cylinder through the piston ring, so as to prevent the temperature of the top of the piston from being too high.

3. The skirt of Bitzer HE piston refers to the part from the lower end surface of the oil ring groove to the bottom surface of the piston. Its function is to guide the reciprocating motion of the piston in the cylinder and bear the side pressure.

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