The working principle of the brake valve: when the brake pedal is stepped on, the pull arm of the brake valve is pulled, and the upper seat of the balance spring is pressed down. The two-chamber diaphragm assembly moves down. After eliminating the gap, first, close the exhaust valve port, and then open the intake valve port, the compressed air in the air reservoir enters each brake air chamber through the brake valve, and the push rod pushes the adjustment arm to make the wheel rotate, and the brake shoe presses against The brake drum produces a braking effect.
Vehicles equipped with exhaust brake valves have the following advantages:
- When the car is going down a long slope, the number and time of application of the service brake can be significantly reduced, preventing the brake from overheating and braking force decline, and keeping the brake in good condition all the time. Extends the life of the shoe, reduces the driver's fatigue in the braking process, and is conducive to environmental protection;
- An exhaust brake is a brake generated by compressing the gas in the engine and the exhaust pipe. Therefore, the braking is soft, no impact, and the impact load of the parts is reduced, which can prolong the service life of the related parts and reduce the number of maintenance;
- The exhaust brake is transmitted to the drive wheel through the drive train. The differential of the transaxle distributes the braking torque equally between the left and right wheels. It reduces the tendency of the car to slide sideways, has a sense of security when driving, and can increase the average speed of the car.
- The oil stop switch of the exhaust brake has a certain fuel-saving effect.
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