Butterfly valve type air inlet and exhaust valve

Abstract

The invention discloses a butterfly valve type air inlet and exhaust valve. Two air inlet and outlet channels are symmetrically formed in the two sides of an air inlet and exhaust valve body, butterfly plates are arranged in the air inlet and outlet channels, an elastic nylon lining is inlaid in the inner wall of each air inlet and outlet channel, and the outer edge of each butterfly plate is in sealing fit with the corresponding elastic nylon lining; two pressing blocks are fixedly connected to the side surface of each butterfly plate, and the upper end and the lower end of each butterfly plate are each fixedly connected with a valve shaft; and the upper part and the lower part of each valve shaft are each provided with an oil seal part, and the two ends of each valve shaft are each provided with a high-speed bearing. According to the air inlet and exhaust valve, two side-by-side butterfly valves are adopted to independently move so as to play a role in inflating and exhausting a pneumatic engine; the double butterfly valves are used for replacing a traditional internal combustion engine air inlet and exhaust valve, and an inner cavity of each butterfly valve channel is inlaid with one certain shaped nylon inner lining so as to ensure sealing of the corresponding valve plate and the inner wall of the channel; and the valve shafts are supported by bearings and sealed with oil seal to improve the requirement of the butterfly valve for high frequency operation of the engine intake and exhaust valves, and the traditional umbrella valve defects of large resistance and large size are avoided.

Description

technical field [0001] The invention relates to an automobile accessory, in particular to a butterfly valve type intake and exhaust valve. Background technique [0002] Automobile valves, also known as throttle valves, are responsible for inputting fuel into the engine and discharging exhaust gas. Traditional engines have only one intake valve and one exhaust valve per cylinder. This design structure is relatively simple and the cost is low. , easy maintenance, good low-speed performance, the disadvantage is that the power is difficult to increase, especially at high speeds, the inflation efficiency is low and the performance is weak. In order to improve the intake and exhaust efficiency, multi-valve technology is often used now, and it is common to have 4 valves per cylinder. [0003] For engines with relatively low pressure and temperature, umbrella valves are mostly used. The umbrella valves often have the characteristics of large resistance, large volume, and inconvenie...

AI Technical Summary

Problems solved by technology

[0003] For engines with relatively low pressure and temperature, umbrella valves are mostly used. The umbrella valves often have the characteristics of large resistance, large volume, and inconvenient use. The resistance is large and easily damaged, which increases maintenance costs. Most of the valves of the engine are poorly sealed, and the intake and exhaust effects are not good

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