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Piston Component

Piston is a reciprocating movement in the cylinder body of an automobile engine. The basic structure of the piston can be divided into top, head and skirt. The top of the piston is the main part of the combustion chamber, and its shape is related to the selected combustion chamber form. Gasoline engines mostly use flat top piston, which has the advantage of small heat absorption area. Diesel engine piston top often has a variety of pits, its specific shape, position and size must be with the diesel engine mixture formation and combustion requirements.

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Product Details

The piston works under high temperature, high pressure, high speed and poor lubrication. The piston is directly in contact with high temperature gas, and the instantaneous temperature can reach more than 2500K, therefore, the heat is serious, and the heat dissipation conditions are very poor, so the temperature of the piston is very high when working, the top is as high as 600 ~ 700K, and the temperature distribution is very uneven; The top of the piston bears a lot of gas pressure, especially the maximum work stroke pressure, gasoline engine up to 3 ~ 5MPa, diesel engine up to 6 ~ 9MPa, which makes the piston impact, and withstand the role of side pressure; The piston in the cylinder at a high speed (8 ~ 12m/s) reciprocating movement, and the speed is constantly changing, which produces a large inertial force, so that the piston is subjected to a large additional load. Working under such harsh conditions, the piston will deform and accelerate wear, and will also produce additional loads and thermal stresses, while being chemically corroded by gas.

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