Shandong QGB cylinder of troubleshooting

Engine cylinder gasket damage and compressed air leakage is frequent failures. Cylinder pad can make the engine work status seriously deteriorated after burning, so does not work, and may cause damage to certain related components or parts; In the engine compression and work schedule, must ensure that of the upper space above the piston seal in good condition, shall not leak. Combined with cylinder pad after burning and compressed air leakage phenomenon of symptom, analysis judgment causes failure causes were signs, points out that to prevent malfunction and effective troubleshooting methods of operation. Cylinder pad at the analysis of the causes of broken, cylinder head bolts, nuts, elongated or a loose joint surface extrusion deformation due to the cylinder head and engine block, cylinder gasket compression deformation, the pressure of high pressure gas accidental overload caused by the cylinder head bolt, nut, cylinder head bolt screw in depth is not enough, the microscopic roughness of the thread surface is flat and caused by excessive torque bolt in neck, etc. , can cause the cylinder head bolt and nut of the spin or loose, thus causing insufficient combination of cylinder head and engine block surface pressure and pressure are not equal everywhere, causing high temperature and high pressure gas from local pressure smaller parts came out and burn out cylinder pad. B faying surface deformation, cylinder head and engine block if the two joint surface deformation, cannot ensure uniform cylinder pad is compact, resulting in leakage cause cylinder pad burning, this also is the main cause of the burning of the cylinder pad. Installed c, does not meet the technical requirements, the head gasket joint surface clean and tighten the cylinder head bolt and nut order is wrong, when the torque is not big enough or uneven, end face higher engine block on each cylinder liner on the size of the flat enough or range, leakage and loss caused by cylinder pad. D operation of the engine cooling system, engine overheating fuel delivery time is too late, long-term overload will cause the engine overheating, particularly in the mouth of the cylinder head into the exhaust valve seat and the swirl chamber parts between the channel exit temperature is higher, due to the effect of high temperature, make the cylinder pad lost the original elastic and brittle, finally was burning. E, cylinder pad itself, the quality of the unqualified, such as uneven warp not level off, the elasticity is insufficient, the material is bad, uneven surface, etc. , or do not pay attention to make the cylinder pad damage in disassembling, easy to cause the cylinder pad damage.