What Causes Engine Cylinder Scuffing?

[DiPaul]

Engine cylinder gasket scuffing can be simply understood as an impact failure between the piston and the cylinder liner or gasket. Common gasket burnouts occur when high-temperature, high-pressure gas impacts the gasket, burning the sealing edges, protective rings, and asbestos boards, leading to cylinder leakage and the mixing of lubricating oil and coolant. Definition: Engine cylinder scuffing refers to an impact failure between the engine's piston and cylinder liner. Working Principle: The cylinder gasket is installed between the cylinder head and the cylinder block, ensuring cylinder sealing through cylinder head bolts to prevent leakage of combustion gases, coolant, and lubricating oil. It must tightly seal the high-temperature, high-pressure gases generated within the cylinder, as well as the coolant and oil flowing through the gasket at certain pressures and velocities, while resisting corrosion from water, gas, and oil.