What are the functions of a crankshaft?
2 Answers
The function of the crankshaft is to convert the thrust transmitted from the piston connecting rod into rotational torque, transforming the reciprocating linear motion of the piston into the circular rotational motion of the crankshaft. It then delivers the engine torque to the transmission system via the flywheel, while also driving the engine's valve train and other auxiliary devices. Here is additional information: 1. Composition of the crankshaft: The crankshaft mainly consists of the front end shaft, main journal, connecting rod journal, crank, counterweight, and rear end flange. It possesses sufficient rigidity and strength, as well as good ability to withstand impact loads. 2. Working principle of the crankshaft: The crankshaft is the most critical component in an engine. During engine operation, the piston is driven by the combustion of the compressed air-fuel mixture to perform linear motion, and the force is transmitted to the crankshaft via the connecting rod. The crankshaft then converts this linear motion into rotational motion. The rotation of the crankshaft serves as the power source of the engine and the driving force for the entire mechanical system.
I remember the crankshaft is super important in the engine. It mainly converts the up-and-down motion of the pistons into rotational power, making the entire engine turn to drive the wheels. Without it, the engine would be a dud, unable to move at all. I often think about how the crankshaft must balance momentum and inertia properly; otherwise, the car would shake violently at high speeds, just like that scary experience when my old Santana trembled on the highway. During regular maintenance, checking the wear on the crankshaft bearings is crucial—too much sludge buildup can cause squeaking, so it's essential to change the oil regularly. In short, the crankshaft extends the engine's lifespan, reduces vibrations, and ensures a smooth and comfortable ride.
