What are the material requirements for the piston?

According to the material of piston, it can be divided into cast iron piston, steel piston, aluminum alloy piston and combined piston.

The main function of the piston is to bear the combustion pressure in the cylinder and transmit this force to the crankshaft through the piston pin and connecting rod. In addition, the piston, cylinder head and cylinder wall together form a combustion chamber.

The piston crown is an inseparable part of the combustion chamber, so it is often made into different shapes. The piston of gasoline engine adopts flat top or concave top at most, so that the combustion chamber has compact structure, small heat dissipation area and simple manufacturing process. Convex pistons are often used in two-stroke gasoline engines. The piston crown of diesel engine is often made into various pits.

Extended data:

classify

1, which can be divided into gasoline engine piston, diesel engine piston and natural gas piston according to the fuel used.

2. According to the purpose of the piston, it can be divided into automobile piston, truck piston, motorcycle piston, marine piston, tank piston, tractor piston, mower piston and so on.

3. According to the process of manufacturing piston blank, it can be divided into gravity casting piston, extrusion casting piston and forging piston.

4. According to the working state of the piston, it can be divided into two categories: non-pressurized piston and pressurized piston.