Engine valve function

The function of the valve (Value) is specifically responsible for inputting fuel into the engine and exhausting exhaust gas. The traditional engine has only one intake valve and one exhaust valve for each cylinder. This design structure is relatively simple, low cost, convenient maintenance, and low-speed performance. Better, the disadvantage is that the power is difficult to increase, especially at high speeds, the charging efficiency is low and the performance is weak. In order to improve intake and exhaust efficiency, multi-valve technology is now used. It is common that each cylinder is arranged with 4 valves (there are also single-cylinder designs with 3 or 5 valves, the principle is the same, such as the Audi A6 engine), a total of 4 cylinders It means 16 valves. The "16V" often seen in car data means that the engine has 16 valves in total. This multi-valve structure is easy to form a compact combustion chamber, and the injector is arranged in the center, which can make the oil and gas mixture burn faster and more uniformly. The weight and opening of each valve are appropriately reduced, so that the valve can be opened or closed. faster.