Application of industrial ceramic in automobiles
Industrial ceramics have excellent mechanical, thermal, and chemical properties such as superior strength, hardness, insulation, heat conduction, high temperature resistance, oxidation resistance, corrosion resistance, wear resistance, and high temperature strength, so industrial ceramics are used in very strict environmental engineering application conditions , The high stability and excellent mechanical properties exhibited are also attracting attention in the automobile manufacturing industry, and are widely used in the manufacture of engines and heat exchange parts, and the base of spark plugs for gasoline engine ignition systems.
①Ceramic glow plug
The glow plug is also called the glow plug. When the diesel engine is cooled in a severe cold environment, it provides heat energy for improving the starting performance. Therefore, the glow plug is required to have the characteristics of rapid heating and long-lasting temperature sensing.
Ceramic glow plugs can effectively achieve energy saving and emission reduction in diesel engine emission control due to their fast heating, high temperature, energy saving, environmental protection and long service life. It can not only completely change the cold start system of the original diesel electromechanical glow plug, Instead of the existing low-temperature start-up preheating and emission reduction methods, it can also meet customer needs in harsh low-temperature environments.
②Ceramic piston
The earliest piston material used for internal combustion engine pistons is cast iron. Its biggest disadvantage is that the special performance under extreme conditions has begun to encounter bottlenecks. It has gradually been unable to meet the pursuit of performance in modern technology and application scenarios, limiting its application in the future. range. Ceramic pistons are generally used in diesel engines. In turbodiesel engines, replacing alloy materials with industrial ceramics can further reduce the design of the cooling device, and the overall production cost is expected to be reduced. In the direct injection diesel engine, the high temperature resistance of industrial ceramics is utilized to insert a ceramic block on the top of the piston, and its thermal efficiency, noise and emissions are all improved
③Ceramic cylinder liner
Cylinder liner is one of the components with the worst working environment in internal combustion engine. It bears the impact of high temperature and high pressure and the reciprocating friction of piston ring. It wears quickly and is prone to cylinder pulling. It happens that the excellent characteristics of industrial ceramic materials can alleviate this The problem arises. The use of full ceramic cylinder liners instead of traditional cylinder liners can prevent the loss of heat energy in the cylinder, simplify the engine structure, thereby improving thermal efficiency and reducing engine quality.
④Ceramic air distribution mechanism
Industrial ceramic parts are mostly used in sliding parts of engine air distribution system. These parts mainly include ceramic rocker arm contacts, ceramic valve tappets, ceramic valves, etc. Utilizing the characteristics of low density, heat resistance and wear resistance of industrial ceramics, valves, valve seats, tappets, valve springs and rocker arms can reduce the deformation of the valve seat and the bounce when seated, reduce noise and vibration, and extend service life.
⑤Ceramic rotor
Gas pressed sintered silicon nitride ceramic rotor has almost no residual pores inside, and has excellent characteristics such as high strength, reliability and strong oxidation resistance. Compared with the traditional rotor, the weight is about 40% lighter, and the moment of inertia during rotation is small. From low-speed operation to high-speed operation, it can achieve better results than previous turbines, which can be expected to achieve lighter weight, higher power and lower fuel consumption.
