What are the components of the crank-connecting rod mechanism?
2 Answers
The components of the crank-connecting rod mechanism include: the engine block group, the piston-connecting rod group, and the crankshaft-flywheel group. The function of the crank-connecting rod mechanism: to provide a combustion chamber, convert the expansion pressure of the gas after fuel combustion acting on the top of the piston into the rotational torque of the crankshaft, and continuously output power. The engine block group consists of the cylinder block, cylinder gasket, cylinder head, crankcase, cylinder liner, and oil pan. The piston-connecting rod group consists of the piston, piston rings, piston pin, and connecting rod. The crankshaft-flywheel group consists of the crankshaft, flywheel, torsional vibration damper, and balance shaft. The function of the crankshaft-flywheel group: to convert the gas force transmitted by the piston-connecting rod group into the rotational torque of the crankshaft for external output, driving the engine's valve train and other auxiliary devices to work.
Oh, when it comes to the crank-connecting rod mechanism, I've seen plenty during my time as a machine maintenance technician in factories. It's like the heart of an engine, converting the piston's up-and-down motion into the crankshaft's smooth rotation. It mainly consists of three parts: the piston moving back and forth in the cylinder; the connecting rod, with one end attached to the piston's small piston pin and the other end hooked onto the crankshaft; and the crankshaft itself, which has several crank throws that twist and turn to transfer power to the wheels. Don't forget those small bearings and bushings—they sit between the connecting rod and the crankshaft, and without them, wear and tear would accelerate, causing the whole machine to fall apart. This mechanism is particularly common in car engines, and during routine maintenance, you should check if the connecting rod bolts are loose; otherwise, you might hear strange noises or experience bearing failure, leaving your car stranded. I've noticed that owners of older cars are more likely to encounter this issue, and simply replacing the piston rings can extend the engine's lifespan. Overall, while it may seem complex, understanding it can save you money and hassle when repairing your car—after all, it's the key component that keeps the engine running.
