From the combustion of air and fuel in the combustion chamber.
Yep.
The expanding high-pressure gases from combustion push the piston down the cylinder during the power stroke in an internal combustion engine. This force generated by the burning fuel drives the piston down, converting the pressure and heat energy into mechanical energy to rotate the engine's crankshaft.
to set on fireIn an automotive sense, ignite is the "explosion" of the fuel in the head cylinder when the spark plug "fires". The "explosion" forces the piston down to rotate the crankshaft and provide power to the engine.
The piston is moved by the connecting rod which in turn is moved by the crankshaft. It is only on the power stroke that the piston moves the connecting rod, crankshaft and all the rest of the engine, in all the other strokes the engine, crankshaft and connecting rod move the piston.
to set on fireIn an automotive sense, ignite is the "explosion" of the fuel in the head cylinder when the spark plug "fires". The "explosion" forces the piston down to rotate the crankshaft and provide power to the engine.
A piston rod connects the piston to the crankshaft in an engine, transmitting the force from the expanding gas to the crankshaft to generate motion. A connecting rod connects the piston to the crankshaft, converting the linear motion of the piston into rotational motion to drive the crankshaft. In summary, the piston rod is part of the piston assembly, while the connecting rod is part of the crankshaft assembly in an engine.
They rotate on the crank and compress air/fuel mixture in the cylinder so it explodes with spark to drive piston down and rotate the crank trnsferring that power to the wheels.
Crankshaft
Gudgeon Pin/Piston Pin
The crankshaft has counterweights which are placed in such a way as to provide momentum when the the power stroke of any piston is absent. This drives the crankshaft to spin until the next power stroke of a piston drives it further.
Both con-rod length and shape of the crankshaft affect piston stroke
The crankshaft converts the linear motion of the piston into rotation of the crankshaft.