The causes of the Copeland D8SK Piston fracture are roughly as follows:

　　 1. Copeland D8SK Piston has serious carbon deposits on the top. The carbon deposit on the top of the piston causes the top of the piston to locally overheat and generate high temperatures. When the local high temperature exceeds the melting point of the material, it will melt the top of the Copeland D8SK Piston to form a molten cave.
　　 2. The piston ring is cemented or broken. Cementation or fracture of the piston ring will cause the piston ring to fail to adhere closely to the cylinder wall, and the heat of the piston top will not be transferred away in time. At the same time, it will also guide the high temperature gas to move down. As a result, the Copeland D8SK Piston top and the piston ring groove will burn due to overheating. Eclipse.
　　3. Uneven oil supply. If the fuel supply amount and fuel supply time of each cylinder of the diesel engine are not uniform, it will worsen the combustion process of some cylinders, forming coke deposits or serious afterburning. The heat of diesel combustion cannot be used for work, and the piston crown temperature in some cylinders will be affected. Too high will cause the material to burn due to thermal fatigue.
　　4. The fuel injector is not working well. When the fuel injection nozzle has dripping, secondary injection, poor atomization, etc., the local temperature of the oil accumulation on the piston top is too high, and the thermal stress increases, resulting in ablation.
　　 5. The engine knocks. When the engine is working, the top of the Copeland D8SK Piston has to withstand the periodic mechanical impact of the explosive combustion force, its instantaneous impact force can reach 7MPa, and the impact force directly acting on the piston top can reach more than 100kN. If the engine knocks, its impact will increase exponentially. Under the action of thermal stress and periodic combustion explosive force, the piston crown will produce thermal fatigue and mechanical fatigue, which will eventually lead to melting and cracking. The main reasons for engine knock are fuel supply time or ignition time too early, too much carbon deposit in the cylinder, too high compression ratio, hot spot formation on the piston top causing pre-ignition, and too low octane number of the gasoline used.
　　 6. The oil cooling nozzle is clogged. Some high-power engine bodies are equipped with oil cooling nozzles, which spray oil into the piston cavity to help cool and dissipate heat. If the oil cooling nozzle is clogged, the Copeland D8SK Piston will heat up and cause the piston to burn out.
　　7. The engine has been overloaded and operated at overspeed for a long time, or the engine has poor heat dissipation. Copeland D8SK Piston has been subjected to high thermal and mechanical stress for a long time and is prone to fatigue and ablation.
　　 8. If there are pores, looseness, micro-cracks, slag inclusions and other defects during the casting of the piston, under the action of high temperature and high pressure, these pores, looseness, micro-cracks will become fatigue sources and cause fatigue damage; the slag inclusions in the piston will melt first, causing Copeland D8SK Piston melted.
　　 9. The throttle is often slammed, the engine is running at high speed and heavy load, and the temperature is too high.