What is pistion pin?

Piston pin, also known as wrist pin or gudgeon pin, is a cylindrical metal rod that connects the piston to the connecting rod in an internal combustion engine. The function of the piston pin is to transfer the force generated by the combustion process from the piston to the connecting rod and then to the crankshaft, ultimately turning the wheels of the vehicle.

The piston pin is an important component as it undergoes frequent heavy loads and high temperatures. It needs to be durable and resistant to wear and tear to ensure the effective and smooth functioning of the engine. Most commonly, piston pins are made of steel alloys, but some advanced engines use lightweight materials such as titanium or ceramic.

The size and shape of the piston pin vary depending on the engine design and its specific application. Automotive engines generally use diameter piston pins that are press-fitted into the piston and connecting rod. Heavy-duty engines often use wider piston pins with tapered ends for better lubrication and reduced wear. The design of the pin also affects the overall engine performance, as a lighter, stronger, and more balanced pin can improve engine acceleration, reduce vibrations, and increase fuel efficiency.