kolvstång

A kolvstång, often translated as piston rod, is a crucial component in many reciprocating mechanical systems. It serves as a connecting element between a piston and the mechanism that drives it or is driven by it. Typically, a kolvstång is a rigid bar or shaft. One end of the kolvstång is attached to the piston, which moves back and forth within a cylinder. The other end is connected to a connecting rod or crank mechanism, which converts the linear motion of the piston into rotational motion, or vice versa.

The primary function of a kolvstång is to transmit the force generated by the pressure acting on the piston. In internal combustion engines, for example, the kolvstång transfers the force from the expanding gases on the piston to the crankshaft, ultimately powering the vehicle. In hydraulic or pneumatic cylinders, the kolvstång transmits the force of the pressurized fluid or air to perform work, such as lifting or pressing. The material used for a kolvstång is typically strong and durable, often steel, to withstand the significant stresses and pressures it experiences during operation. Its design must also account for factors like length, diameter, and the type of connection at each end to ensure efficient and reliable operation of the overall system.