On September 1, the Ministry of Industry and Information Technology released the "Recommended Vehicle Catalogue for Promotion and Application of New Energy Vehicles (2017 8th Batch)", which includes 273 models of 94 companies, including 30 passenger cars, 136 passenger cars and 107 special vehicles. . There are a total of 92 car companies with 249 models of pure electric products, and plug-in hybrid products have a total of 21 models of 10 car companies, and a total of 2 car enterprises with 3 models of fuel cell products.
Classified from the finished structure of the valve, it is usually divided into a whole valve, a double metal butt welding valve and a hollow sodium filling valve.The additional process is usually top soldering, top surfacing, cone surfacing, surface nitriding, surface chrome plating, and the like.The valve is an important part of the engine. The function of the valve is to specifically input air into the engine and exhaust the burned exhaust gas.
From the structure of the engine, it is divided into an intake valve and an Exhaust Valve. The function of the intake valve is to draw air into the engine and mix and burn with the fuel; the function of the exhaust valve is to discharge and dissipate the burned exhaust gas.
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The Ministry of Industry and Information Technology released the 8th batch of recommended new energy vehicle catalogues, 273 models were selected