What are the components of the crank-connecting rod mechanism?
2 Answers
The components of the crank-connecting rod mechanism are: 1. Engine block group: cylinder block, cylinder gasket, cylinder head, crankcase, cylinder liner, oil pan; 2. Piston-connecting rod group: piston, piston ring, piston pin, connecting rod; 3. Crankshaft-flywheel group: crankshaft, flywheel, torsional damper, balance shaft. The functions of the crank-connecting rod mechanism are: 1. Converting gas pressure into crankshaft torque; 2. Transforming the reciprocating motion of the piston into the rotational motion of the crankshaft; 3. Converting the force acting on the piston crown from combustion into crankshaft torque to output mechanical energy to working machinery. The front end of the crankshaft in the crank-connecting rod mechanism is used to drive auxiliary mechanisms such as the valve train, water pump, and fan. The front end shaft is equipped with a timing gear, belt pulley for the fan and water pump, torsional damper, etc.
The crankshaft connecting rod mechanism is a particularly crucial part of the engine. I know it mainly consists of three components: the piston, connecting rod, and crankshaft. The piston is installed in the cylinder and moves up and down, receiving the thrust generated by fuel combustion. One end of the connecting rod is attached to the piston and secured with a piston pin, while the other end is connected to the crankshaft via a big-end bearing. The crankshaft is that bent shaft that converts the piston's up-and-down motion into rotational movement, which is then transmitted to the gearbox to drive the wheels. I often encounter this mechanism when repairing cars. If the connecting rod becomes loose or the crankshaft wears out, the engine will produce abnormal noises and even experience a loss of power, requiring timely replacement of parts. Piston rings and crankshaft bearings also need regular inspection, as they are prone to failure under high temperatures. Although its structure seems simple, without this mechanism, the car wouldn't move at all, so it's essential to maintain it properly.
