What are the main components of the crank connecting rod mechanism?
2 Answers
The crank connecting rod mechanism mainly consists of three parts: the engine block group, the piston connecting rod group, and the crankshaft flywheel group. The engine block serves as the framework of the engine and the installation base for various mechanisms and systems of the engine. It houses all the main components and accessories of the engine, both internally and externally, and bears various loads. The piston, together with the cylinder head and cylinder wall, forms the combustion chamber. It withstands the gas pressure in the cylinder and transmits the force to the connecting rod through the piston pin, thereby driving the crankshaft to rotate. The function of the crank connecting rod mechanism is to provide a combustion space, convert the expansion pressure of the gas generated after fuel combustion acting on the piston top into the torque of the crankshaft's rotation, and continuously output power. The working principle of the crankshaft includes: 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 of combustion acting on the piston top into crankshaft torque to output mechanical energy to the working machinery.
I remember one time when I was fixing my car myself, after opening up the engine, I found that the crank-connecting rod mechanism mainly consists of three parts: the piston, connecting rod, and crankshaft. The piston is installed in the cylinder liner, moving up and down in a straight line, like a little pump going back and forth. As for the connecting rod, it connects the piston at one end and the crankshaft at the other, acting like a big arm swinging to transfer the motion. The crankshaft is the core output shaft, converting the piston's force into rotational power to drive the transmission. This set of components is quite durable, but don't neglect lubrication. If the engine oil gets dirty with too much metal shavings, the bearings will wear out quickly, and the engine will start making a buzzing noise. If you hear abnormal noises while driving, pull over and check immediately—don't push through it, or the repair costs will be sky-high. Don’t exceed the 5,000-kilometer oil change interval to ensure smooth piston operation.
