What does the crank connecting rod mechanism mainly include?

[Felicity]

The crank connecting rod mechanism mainly includes the cylinder block, cylinder gasket, cylinder head, crankcase, cylinder liner, and oil pan of the engine block group; the piston, piston rings, piston pin, and connecting rod of the piston connecting rod group; and the crankshaft, flywheel, torsional vibration damper, and balance shaft of the crankshaft flywheel group. The engine block serves as the installation foundation for all mechanisms and systems of the engine, accommodating all major components and accessories inside and outside, and bearing various loads. Therefore, the engine block must have sufficient strength and rigidity. Working principle of the crank connecting rod mechanism: During the power stroke, the piston is subjected to the expansion pressure generated by combustion gases, converting the linear motion of the piston into the rotational motion of the crankshaft through the connecting rod, thereby outputting power. Relying on the rotational inertia of the crankshaft and flywheel, the connecting rod drives the piston up and down to complete auxiliary strokes such as exhaust, intake, and compression, preparing for the next power stroke.