The piston pin joins the piston to the connecting rod. Igniting fuel / air mixture pushes down on the top of the piston, the piston transfers the force to the connecting rod, which in turn pushes against the crankshaft, converting the up and down motion of the piston to the rotary motion of the crankshaft.
The piston pin allows back and forth motion of the connecting rod (as it's other end is moving back and forth in a circular motion with the crankshaft.)...if instead of a pin a solid joint was made from the piston to the connecting rod the engine would not be able to run, as the connecting rod would try to rock the piston back and forth (side to side, not up and down) as the rod was moved sideways with the crankshaft.
The gudgeon pin or wrist pin (as it is called in the US), connects the piston to the connecting rod and provides a bearing for the connecting rod to pivot upon as the piston moves.
Gudgeon Pin/Piston Pin
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.
Egudgeon pin
Egudgeon pin
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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.
a piston pin is a machined high strength steel "tube" that goes thru the piston and connecting rod and holds them together.
The main function of the gudgeon pin is to connect the piston to the connecting rod in an internal combustion engine. It allows for the rotational motion of the connecting rod to be converted into the linear motion of the piston. This pin must be strong and durable, as it experiences significant forces during engine operation. Proper lubrication and fit are essential to prevent wear and ensure smooth operation.
Some are pressed in and others use a floating pin held in by retaining clips on each end.
There are three types of piston pins they are, Stationary pin Semi floating pin Full floating pin
piston pin, piston rings, side bearings, connecting rod bearings