Gudgeon Pin/Piston Pin
I believe a gudgeon pin is what the British call a connecting rod pin (or wrist pin or piston pin) in a reciprocating assembly, (piston, connecting rod, crank ) It connects the piston head to the connecting rod.
It is a type retaining fastener in mechanical engineering. For instance a gudgeon pin attaches a piston to a connecting rod in an engine.
A gudgeon is a small freshwater fish. A gudgeon pin is a small rod which connects the piston to the connecting rod in an internal combustion engine (often shortened to "gudgeon").
crnke shaft is the one which is attached with piston trough gudgeon pin or swift pin. Its main use is to rotate the piston in rotary motion with the help of counter weight,due to which piston resiprocate up and down.
There are three types of piston pins they are, Stationary pin Semi floating pin Full floating pin
There are three types of piston pins they are, Stationary pin Semi floating pin Full floating pin
4140
plasma nitriding
Piston never rotates. Piston moves up and down or to and fro. Pistons in some marine diesel medium speed engines (500 - 1000 rpm) have rotating pistons. Instead of having a gudgeon pin like most 4 stroke engines, these pistons have a spherical bearing. Inside the piston skirt is a circular ratchet system that rotates the piston as the connecting rod swings on each stroke. At 500 rpm, the piston rotates at about 10 rpm. Advantages are less wear, better lubrication and hence longer life.
The piston rod is more usually called the con rod or connecting rod. It is connected at the top end to the piston with what is called a wrist pin. (The wrist pin is a cylinder of steel that slides through the side of the piston and through the top hole in the connecting rod.) At the bottom end the connecting rod mates up to the crankshaft. There is what is called a rod cap that goes on the bottom of the connecting rod to hold that rod onto the journal of the crankshaft. The connecting rod's purpose is to transfer downward and upward thrust between the piston and crank. The combustion of fuel drives the piston down to the crankshaft were it is converted to rotary force which drives your wheels. The wrist pin, is called a piston pin or gudgeon pin in the UK. The hole in the con-rod is commonly called the small or little end, and the other end where the cap holds it to the crankshaft is the big end.
Egudgeon pin