GUI LIN NEW GLORY MACHINERY CO., LTD : introduction to automobile crankshaft (II)

The most important part of an engine. It takes the force from the connecting rod and converts it into a torque that passes through the crankshaft and drives other parts of the engine. The crankshaft is subjected to the combined action of centrifugal force of rotating mass, gas inertia force of periodic change and reciprocating inertia force, which makes the crankshaft bear the action of bending and torsional load. Therefore, it is required that the crankshaft has enough strength and stiffness, and the surface of the journal should be wear-resistant, work evenly and have good balance.


In order to reduce the mass of the crankshaft and the centrifugal force, the crankshaft journal is often hollow. Oil holes are made on each journal surface to introduce or extract oil to lubricate the journal surface. In order to reduce stress concentration, the connection of spindle neck, crank pin and crank arm is connected by transition arc.


This paper by guilin new ronghuang machinery co., LTD