Do you know how many kinds of cracks there are in the cylinder block?

Cracks in cylinder block and cylinder head are caused by unreasonable structure, materials and manufacturing technology, and improper use and maintenance. From the aspect of use and maintenance, the concrete measures to prevent cracks in the cylinder block and cylinder head mainly include the following points: don't let the engine run overloaded for a long time. Because this will lead to excessive thermal stress in the cylinder block. Don't add cold water suddenly when the engine is hot. If the engine is found to be short of water during driving, cooling water must be supplemented after the engine temperature drops to prevent the engine from bursting due to excessive temperature difference between the cylinder block and water; Before starting the engine, add enough cooling water to avoid water shortage or add cold water after the temperature rises. The scale in the water jacket should be removed in time. Excessive scale will not only reduce the passing area of cooling water, but also reduce the heat dissipation performance of the engine due to poor heat transfer of scale. Especially after the water channel between the cylinder and the valve seat is blocked, the heat dissipation performance will be greatly reduced, the local working temperature will rise, and the excessive thermal stress will lead to cracks. After the engine is started, it can't run at high speed immediately, lest the vibration of crankshaft increase the load of the cylinder block and cause cracks in the weak parts. Reasonable use of accelerator pedal. Always avoid sharp booms; When the car accelerates, the throttle should not be too fast or too slow; When driving, the power of the engine should be reasonably adjusted by manipulating the accelerator pedal to avoid long-term high-speed and overload work. When parking outdoors at night in cold winter, the cooling water must be drained; When the engine is not easy to start, it is best to preheat the hot water before starting; Temporary parking for a long time (generally more than 2 hours), cooling water should also be discharged and thoroughly cleaned; If the drainage is not smooth, start the engine in time to keep the engine at a certain temperature. If the specified antifreeze is used, it is another matter.