Piston

The piston is a mechanical element of reciprocating linear motion, commonly used in internal combustion engines, compressors and other equipment. It has a simple structure and consists of a piston head, a piston rod and a piston ring. The piston head is a cylindrical component used to seal the top of the cylinder with good wear resistance and sealing performance. The piston rod is connected to the piston head, which transmits the movement of the piston head to other mechanical devices. Piston rings, on the other hand, are used to seal the gap between the piston and the cylinder wall to prevent gas leakage. The movement of the piston is driven by the crankshaft, which converts the rotational motion of the crankshaft rotation into the reciprocating linear motion of the piston through the connecting rod. In an internal combustion engine, the upward and downward movements of the piston correspond to the working processes such as compression and explosive impact, respectively. The design and manufacture of pistons need to consider many factors, such as the choice of material, sealing performance requirements, the effects of thermal expansion and contraction, etc. Pistons are widely used in modern industry, not only playing an important role in vehicles, such as automobiles, trains, ships, etc., but also playing a key role in compressors, pumps and other equipment.