LS
The Piston is the reciprocating part in the cylinder block of the 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 type of combustion chamber selected. Gasoline engines mostly use flat-top pistons, which have the advantage of small heat-absorbing area. There are often various pits on the top of the diesel engine piston, and its specific shape, location and size must be adapted to the requirements of the diesel engine's mixture formation and combustion.
Classification
Since the pistons of internal combustion engines work under high temperature, high pressure and high load conditions, the requirements for the pistons are relatively high, so we mainly talk about the classification of internal combustion engine pistons.
1. According to the fuel used, it can be divided into gasoline engine pistons, diesel engine pistons, and natural gas pistons.
2. According to the material of the piston, it can be divided into cast iron piston, steel piston, aluminum alloy piston and combined piston.
3. According to the process of manufacturing piston blank, it can be divided into gravity casting piston, squeeze casting piston and forging piston.
4. According to the working condition of the piston, it can be divided into two categories: non-pressurized piston and pressurized piston.
5. According to the use of pistons, it can be divided into car pistons, truck pistons, motorcycle pistons, marine pistons, tank pistons, tractor pistons, lawnmower pistons, etc.
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