Overview

Piston is a vital component in machinery, automobiles, engines and other fields. The main function of the piston is to reciprocate in the cylinder, and realize the conversion and transmission of energy through this movement.

Basic concepts

A piston is a part that reciprocates in a cylindrical space and is usually made of metal or other wear-resistant material. It is mainly composed of three parts: the top, the rod and the skirt. The working environment of the piston is very harsh, under high temperature, high pressure and high-speed movement, so its material performance, manufacturing process and structural design have extremely high requirements.

Function

Pistons play a vital role in all types of machinery and equipment. The following are its main functions:

1. Energy conversion: In the engine, the piston converts the thermal energy of the fuel into mechanical energy through reciprocating motion, which drives the crankshaft to rotate, thereby outputting power.

2. Compression and discharge: The piston compresses the gas during the compression stroke to create conditions for the combustion process; during the discharge stroke, the exhaust gas produced by combustion is discharged out of the cylinder.

3. Maintain seal: The sealing performance between the piston and the cylinder wall directly affects the efficiency of the engine. Good sealing performance can ensure the stability of the combustion process.

Application

Pistons are widely used in all kinds of machinery and equipment, especially in the engine. The following are the applications of pistons in several main areas:

1. Automobile engine: The piston is the core component of the automobile engine, which is responsible for converting the heat energy generated by fuel combustion into the power to drive the vehicle forward.

2. Diesel engine: In a diesel engine, the piston is subjected to higher pressure and temperature, so it needs to have higher strength and wear resistance.

3. Aeroengine: Aeroengine has extremely high performance requirements for pistons, which require pistons to have the characteristics of light weight, high strength, and high temperature resistance.

4. Compressors: In some types of compressors, pistons also play an important role in compressing gas.