what is difference between camshaft and crankshaft
Answers
Answer:
a camshaft is a shaft with one or more cams attached to it, especially one operating the valves in an internal combustion engine.
A crankshaft is a shaft driven by a crank mechanism, consisting of a series of cranks and crankpins to which the connecting rods of an engine are attached
Answer:
Explanation:Crankshaft: well this part of an engine is a shaft as the name suggests on which all the units of a engine are mounted. When the piston move or reciprocate up and down this movement is transferred down to the crankshaft by the piston rod and crank to the crankshaft. Imagine ur legs pedalling a bicycle ..so instead of the pedals u have the connecting rod and ur legs are the pistons. So the reciprocating movement is converted to a rotary motion of the crankshaft. Another example is a diesel gensets u have at villages which u crank up with a turning handle to start. U through the lever are rotating the crankshaft to impart initial driving momentum to the engie.
Camshaft: as the engines work they need to breathe out exhaust gases and take in fresh air ( charge) for the next cycle to take place . All these processes need to take place at a designated time wrt each other. These processes are timed through opening and closing of valves and actuation of fuel pumps through a actuating mechanism which is triggered by movement of the crankshaft. The camshaft comes into picture here. The Crankshaft drives through a belt or chain drive the camshaft on which the inlet/exhaust/ fuel pump cams are fitted for each unit when the crankshaft rotates it in turn rotates the camshaft which precisely actuate the valve and fuel pumps.
For the relationship between the two. In a 4 stroke engine camshaft rotates at half the speed of the crankshaft and in a 2 stroke engine the speed of both the shafts is same