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Emergency Repair of Diesel Engine Cylinder Head After Damage
Damage to the diesel engine cylinders, except for the uneven tightening torque of the cylinder head bolts, or the deformation of the cylinder head, so that the cylinder is not fully attached to the joint surface between the cylinder head and the cylinder block, the diesel fuel supply advance angle is too large, in the cylinder More diesel fuel accumulates and completes combustion preparation. As a result, the cylinder pressure rises sharply after the start of combustion. The diesel engine is rough, and it is easy to damage the cylinder head gasket. If the cylinder pad is often damaged at the same location, it is mostly caused by the deformation of the cylinder head. In addition, when the cylinder liner is poor in quality and uneven in thickness, especially when the thickness around the combustion chamber is uneven, the cylinder head gasket can also be easily damaged. When the diesel engine is working, if you hear the sound of exhaust gas “气缸, 啪†around the cylinder, or you hear the sound of “drums and drums†in the radiator, or the pressure of two adjacent cylinders when checking the cylinder pressure, Very low, all indicate that the cylinder mat is damaged. When the driver encounters damage to the cylinder head gasket and there are no accessories around the vehicle, he or she can take the following types of emergency treatment methods: 1 If the damage is found to be a small mouth, use aluminum paper (wrapped aluminum paper or used capacitors inside the cigarette box). Inside the aluminum paper) or asbestos first fill the damage, and then use the tool carefully leveling and tapping; 2 If the damaged area is large, you can use a piece of dry leather with the shape and thickness of the damaged part (can be taken from the leather belt or wallet) Fill in the damage; 3 If the plane on the cylinder or the lower plane has a pit, you can gently press the asbestos line or aluminum paper in the pit, and then level; 4 If the damage is between the two cylinders , The asbestos thread or aluminum paper must be wrapped with copper skin, and then it should be pressed against the damaged part. When installing cylinder head gaskets, be careful not to align the water holes, oil holes, and positioning pins, but also to make sure that the cylinder gasket is marked with its side facing up. If there is no sign on the cylinder mat, the smooth surface should face toward the cylinder block, and the side of the cylinder bore that faces the flange is toward the cylinder head. In addition, used cylinder gaskets cannot be reused. In case of emergency, the old cylinder mat without damage can be evenly heated and naturally cooled after being used on the fire, because the heating can make the asbestos lined in the copper skin bulky.