In-cylinder braking type automobile engine retarding system

Abstract

The invention discloses an in-cylinder braking type automobile engine retarding system, and belongs to the technical field of automobile braking. Comprising an in-cylinder braking type automobile engine, an in-cylinder braking type automobile engine air inlet and exhaust port circulation pressurization channel and a retarding control device. The in-cylinder braking type automobile engine air inlet and outlet circulating pressurization channel comprises an air inlet and outlet circulating pipe and a compressed air conveying pipe. One end of the air inlet and outlet circulating pipe is communicated with an air inlet of the in-cylinder brake type automobile engine, and the other end of the air inlet and outlet circulating pipe is communicated with an air outlet of the in-cylinder brake type automobile engine; one end of the compressed air delivery pipe is communicated with an automobile compressed air source, and the other end of the compressed air delivery pipe is communicated with an air inlet of the in-cylinder brake type automobile engine; the retarding control device comprises a controller and an execution element; the execution element comprises an air inlet pipe opening and closing automatic control valve, an exhaust pipe opening and closing automatic control valve, a circulating pipe opening and closing automatic control valve and a compressed air conveying pipe opening and closing automatic control valve. The device has the characteristics of reasonable structure, good braking performance, high safety and reliability and the like.

Description

technical field [0001] The invention relates to the technical field of automobile braking. Background technique [0002] Cars are faced with the problem of speed control when going downhill, especially for trucks. Its potential energy controls the speed of the vehicle. Due to the long braking time, the brake pot will overheat during the long brake pad friction (potential energy conversion) process, which is prone to dangerous situations such as tire fire and brake failure. Most large trucks are equipped with exhaust brakes. Although the problem is alleviated to a certain extent, the effect is not ideal. At present, more advanced exhaust valve brakes (for example, Weichai WEVB exhaust valve brake system) The braking effect is ideal, but in the case of heavy vehicles and steep slopes, the braking force is still insufficient, which affects driving safety to a certain extent. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to ...

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Problems solved by technology

[0002] Cars face the problem of speed control when going downhill, especially for trucks. The greater the weight of the cargo, the greater the potential energy contained when going downhill. To control the speed of the car, the potential energy must be effectively reduced. If the brake pads alone are used Its potential energy controls the speed of the vehicle. Because the braking time is too long, the brake pot will be overheated during the long brake pad friction (potential energy conversion), which is prone to dangerous situations such as tire fire and brake failure.

Most large trucks are equipped with exhaust brakes. Although the problem is alleviated to a certain extent, the effect is not ideal. At present, more advanced exhaust valve brakes (for example, Weichai WEVB exhaust valve brake system) The braking effect is relatively ideal, but in the case of heavy vehicles and steep slopes, the braking force is still insufficient, which affects driving safety to a certain extent

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