The role of the crankshaft in the engine

The crankshaft plays a crucial role in the engine, responsible for withstanding the forces transmitted by the connecting rods and converting them into torque, driving other attachments on the engine. During this process, the crankshaft also needs to withstand the combined effects of centrifugal force, gas inertia force, and reciprocating inertia force generated by rotating mass, thereby bearing bending and twisting loads.

Another important function of the crankshaft is to convert the thrust transmitted by the piston connecting rod into rotational torque, converting the linear reciprocating motion of the piston into the circular rotational motion of the crankshaft. Subsequently, through the flywheel, the crankshaft transmits the engine's torque to the transmission system and drives the engine's valve mechanism and other auxiliary devices to operate.

The crankshaft occupies an important position in the engine, as it is not only the transmitter of force, but also the output of torque. After receiving the force from the connecting rod, the crankshaft converts it into torque and drives other attachments on the engine to work. At the same time, the crankshaft also needs to deal with the effects of centrifugal force, gas inertia force, and reciprocating inertia force generated by rotating mass, which makes the crankshaft withstand bending and twisting loads.

The role of the crankcase cannot be ignored, and the following are its main functions:

Firstly, the crankcase is also responsible for bearing the force transmitted by the connecting rod, converting it into torque, and outputting it through the crankshaft to drive other accessories on the engine. Secondly, the crankcase also needs to deal with the effects of centrifugal force, gas inertia force, and reciprocating inertia force generated by rotating mass, to ensure that the crankshaft can operate stably under bending and torsional loads.

In addition, the crankcase also has the function of preventing oil deterioration and effectively preventing the leakage of crankshaft oil seals and crankcase gaskets, thereby ensuring the normal operation and durability of the engine.