CRANKSHAFT

CRANKSHAFT

In my all post I’m telling that this the major part you definitely get bored of this now also I’m going to say the same line crankshaft another major part in the engine but in this post bit I’m going to some technical words so you can understand better the mechanism and parts description .Crankshaft part which converts the reciprocating motion of the piston into rotary motion .This motion of the piston is transmitted to the crank by the connecting rod.

The crank shaft subjected to the torsional and bending stresses and is supported on the crankcase structure on large bearing .These crankshaft bearings are known as main bearings. The number of bearings varies depending on the dynamic load on it. For example a four-cylinder engine crank case may have two, three or five bearings.

Parts in crankshaft

Crankshaft contains many parts they are  crankpins, crank arms, crank journals, and driving ends the crankshaft attached to the fly wheel to reduce the pulsation characteristic of the 4s(four stroke cycle)

Materials used for crankshaft

Crankshaft are made by medium carbon steel and its forged in a single piece and process for forging was roll forging ,if crankshaft made by machining steel is preferred and additional heat treatment required this process was more expensive compare to forging.