The cylinder gasket is mainly used to ensure the sealing between the cylinder block and the Cummins 6CT Cylinder Head, preventing leakage and leakage. Cylinder gasket is directly in contact with high temperature and high pressure gas, so it is easy to be ablated in use, especially around the rim of cylinder head. Cylinder gasket burning will seriously deteriorate the working condition of the engine, and it is also easy to cause damage to some related parts or parts. Today, we will discuss with Cummins Cylinder Head Suppliers how to determine the burning of cylinder gaskets and how to solve them.
Cylinder liner ablation failure phenomenon
Burning of adjacent two cylinder cross beam
Phenomena: sudden drop in engine power, significantly reduced speed; serious body shake and exhaust pipe has a slight grievance phenomenon; the engine is difficult to start after flameout or extremely unstable idle speed.
Burning between cylinder head and cooling channel
Phenomenon: When the engine is running, the water temperature suddenly rises, and the rotational speed is dull, the power drops, the cooling water consumption is too fast; the exhaust pipe has the water gas discharged, especially when idling, the exhaust gas discharged is yellowish phenomenon; the crankcase oil plane rises, the lubricant emulsification phenomenon is serious; the radiator filling nozzle has the water rust mark. If the damage is serious, a large amount of cooling water will enter the cylinder, causing the starting surface to be unable to start.
Burning between cylinder head and lubricating oil way
Phenomena: unstable oil pressure and oil temperature rise too fast; there are bubbles in lubricating oil, light color and smell of diesel oil, lubrication oxidation deterioration rate and consumption too fast; diesel engine low temperature, exhaust pipe a large number of blue smoke.
Burning loss between the cylinder head and the edge of the air cushion
Phenomenon: When the engine burns slightly, the engine power drops, the acceleration is slow, especially under heavy loads. When idling speed is unstable and the body shakes seriously. If the burns are serious, the rhythmic "crack, crack" sound can be detected in the middle and upper parts of the cylinder.
Burning between cylinder head and cylinder head bolt hole
Phenomenon: engine idle speed instability; valve cover with a slight "pop, pop" sound; cylinder bolts (nuts) often loose.
Cause of cylinder liner ablation
Excessive flatness at the bottom of the cylinder head, excessive flatness at the top of the cylinder head, loosening of cylinder head bolts or excessive tightening torque lead to improper sealing and gas channeling. Driving method is improper, used to pour on the throttle and rapid acceleration, high-speed operation, excessive pressure aggravated cylinder cushion erosion. Engine often runs under heavy load, engine overheating, detonation and other conditions, resulting in local high temperature and high pressure in the cylinder and ablation of cylinder gasket. The fuel injection timing is too early; the diesel oil is not selected properly; the combustion chamber is seriously coking. The quality of the cylinder gasket is poor and the thickness is uneven. There are bubbles inside the package, asbestos uneven laying or tight edges.
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