Piston Pins

Piston Pins

Piston pins, also known as wrist pins or gudgeon pins, are an essential component of an internal combustion engine. They are cylindrical metal rods that connect the piston to the connecting rod, allowing the piston to move up and down within the cylinder. The piston pin is located at the small end of the connecting rod and passes through the piston, allowing the piston to pivot around it as it moves up and down within the cylinder. Piston pins are subjected to high levels of stress and heat, and as such, they are typically made from high-strength materials such as hardened steel or titanium. They are designed to be lightweight, yet durable enough to withstand the forces generated by the engine. The size and shape of the piston pin will vary depending on the specific engine design and application. One of the main functions of the piston pin is to transfer the force of the expanding gases in the combustion chamber to the connecting rod. As the fuel-air mixture is ignited, it rapidly expands, pushing the piston down and generating power. The piston pin must be able to withstand these forces without bending or breaking, ensuring that the engine operates smoothly and efficiently. In addition to their mechanical function, piston pins also play a role in controlling engine emissions. By reducing the weight of the piston and connecting rod assembly, the engine is able to operate more efficiently, resulting in lower fuel consumption and reduced emissions.

internal combustion engine, connecting rod, combustion chamber, high-strength materials, mechanical function

— Andrew Moore