What are the components and functions of the crank-connecting rod mechanism?
2 Answers
The components and functions of the crank-connecting rod mechanism are as follows: I. Components of the crank-connecting rod mechanism: It consists of three parts: the engine block group, the piston-connecting rod group, and the crankshaft-flywheel group. 1. Engine block group: cylinder block, cylinder gasket, cylinder head, crankcase, cylinder liner, and oil pan. 2. Piston-connecting rod group: piston, piston ring, piston pin, and connecting rod. 3. Crankshaft-flywheel group: crankshaft, flywheel, torsional vibration damper, and balance shaft. II. Functions of the crank-connecting rod mechanism: It provides a combustion chamber, converts the expansion pressure of the gas acting on the piston crown after fuel combustion into the rotational torque of the crankshaft, and continuously outputs power.
The crankshaft connecting rod mechanism is the heart of the engine, and I've seen many car owners curious about its structure. Simply put, it consists of three main components: the piston moves up and down in the cylinder, the connecting rod acts like an arm linking the piston and crankshaft, and the crankshaft is the key to converting the up-and-down motion into rotational output. Every time the engine ignites, the piston is pushed downward by the combustion gases, causing the connecting rod to swing and the crankshaft to rotate—this is the magic that transforms our throttle input into wheel rotation. This mechanism also bears the immense pressure of the engine, so the materials must be exceptionally strong and the design precise. If any part wears out, such as a loose connecting rod bearing, the engine will produce annoying knocking sounds, and in severe cases, it may even lead to cylinder scoring and major overhauls, so proper maintenance is essential.
