How Does the Crankshaft Work?

[RubyRose]

The working principle of the crankshaft: It receives the force transmitted by the connecting rod and converts it into torque, which is then output through the crankshaft to drive other engine accessories. The crankshaft is subjected to the combined effects of centrifugal force from rotating masses, periodically varying gas inertial forces, and reciprocating inertial forces, causing it to bear bending and torsional loads. Common forms of crankshaft damage include journal wear, bending and twisting deformation, and cracks. Journal wear: The wear on the main journals and connecting rod journals of the crankshaft is uneven, and the wear locations follow certain patterns. Crankshaft bending and twisting deformation: Crankshaft bending refers to a coaxiality error of the main journals exceeding 0.05mm, while crankshaft twisting occurs when the angular distribution error of the connecting rod journals exceeds 0 degrees 30 minutes. Crankshaft fractures: Cracks in the crankshaft often occur at the transition fillets between the cranks and journals, as well as at oil holes.