Exhaust brake capable of adjusting working pressure

Abstract

The invention relates to an exhaust brake with stable and adjustable operating pressure, stable brake and sensitive brake reaction, comprising a valve body, a disc, a supporting rod, a supporting sleeve, a control rod, a spring and an adjustable bolt without a pressure relief vent, wherein, the supporting rod and the supporting sleeve are used for fixing the disc, the control rod is used for controlling the on and off of an exhaust channel, the spring is used for adjusting the size of the operating back pressure of an assembly. The exhaust brake can release the excess pressure in time when the pressure surpasses the presetting value due to any unforeseen circumstances and guarantees the stable and reliable operating pressure; moreover, the exhaust brake with the decompressor has adjustable operating pressure, simple and convenient implementation and reliable performance.

Description

technical field [0001] The invention relates to an exhaust brake with stable and adjustable working pressure, stable braking and sensitive braking response. technical background [0002] The retarder is an auxiliary braking device for vehicles (especially heavy-duty trucks and large passenger cars). The use of auxiliary braking devices can enhance the braking performance of vehicles without using or using less main brakes (traditional friction brakes) The vehicle can be controlled within a certain safe speed range, the brake failure of the vehicle can be prevented, and the driving safety can be ensured, especially the safety when the heavy-duty vehicle goes down a long slope can be enhanced. At the same time, using the retarder can significantly reduce the frequency of use of the main service brake (friction brake), thereby reducing the wear of the main brake hub and friction plate, improving its service life, and at the same time prolonging the maintenance cycle of the main...

AI Technical Summary

Problems solved by technology

[0005] 1. The back pressure is not stable and cannot be adjusted, because the engine speed is not constant, but changes within a certain range, so its back pressure is not a definite value. As the engine speed increases, its back pressure also increases. Increasingly, exceeding the allowable pressure value of the engine will cause harm to the engine itself

Although the maximum back pressure value can be limited by increasing the pressure relief hole, it also cannot solve the problem of unstable back pressure value, and the increase of the pressure relief hole usually reduces the back pressure value (because the design of the pressure relief valve should be based on The maximum speed of the engine is designed, and the speed of the engine is usually lower than its maximum speed), thus reducing the performance of the entire exhaust brake

[0006] 2. Due to the increase of the pressure relief hole, the sensitivity of the exhaust brake is reduced. Because the exhaust brake works by the back pressure of the engine, it takes a certain amount of time to establish the back pressure. After the pressure relief hole is added, the back pressure is established. The pressing time will be longer, which will lead to serious lag of braking, especially when walking on uneven slopes, it may be necessary to brake frequently, and the braking time is very short. Due to the serious lag of braking, it often makes it The braking effect is lost, and in serious cases, it will lead to accidents

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