The piston rod is the connecting component between the piston and the connecting rod

The piston rod is the connecting component between the piston and the connecting rod, used to convert the reciprocating linear motion of the piston into the rotational motion of the connecting rod. It is usually made of high-strength alloy steel or cast iron.

In an internal combustion engine, the piston rod is connected to the piston through a small end and to the connecting rod through a large end. When the engine is working, the explosion in the cylinder pushes the piston down for a stroke (compression and explosion process), while on another stroke, it causes the piston to move up (suction and discharge process). This reciprocating motion is transmitted by the connecting rod to the crankshaft, thereby converting energy into rotational force.

In addition to being used in internal combustion engines, piston rods are also widely used in other fields, such as hydraulic systems, air compressors, etc. According to specific needs and application scenarios, its form and structure also vary.

In short, the piston rod is an important transmission component that converts reciprocating linear motion into rotary motion, and plays a crucial role in various mechanical equipment.