Optimization method of braking force distribution in commercial vehicle integrated braking system under different working conditions

Abstract

Disclosed is a method for optimizing braking force distribution of an integrated braking system of a commercial vehicle according to working conditions. The method for optimizing braking force distribution of a front axle friction brake, a rear axle friction brake and an eddy current retarder is provided for the commercial vehicle equipped with an air pressure electric control braking system and the eddy current retarder, and the difference of the requirements of the emergency braking working condition, the long slope downhill braking working condition and other ordinary braking working conditions for the braking response speed, the braking distance, the brake temperature and the friction liner abrasion uniformity is taken into consideration, so that different control targets and different braking force distribution strategies are adopted according to different braking working conditions. The method has the advantages that the braking response speed of the braking system is increased, the temperature rise of the brakes under the downhill working condition is reduced, the service life of each friction liner is prolonged, accidents are avoided, the safety under various braking working conditions is improved, the service life of each friction brake and the service life of the eddy current retarder are prolonged, the maintenance frequency is reduced, and the economical performance is improved.

Description

technical field [0001] The invention belongs to the field of braking force distribution, and in particular relates to a method for optimizing the distribution of braking force according to working conditions of a commercial vehicle pneumatic electric control brake and eddy current retarder integrated braking system. Background technique [0002] Commercial vehicles have a large mass and require a large braking torque. In order to prevent thermal fading in long-term braking conditions such as downhill slopes, auxiliary braking devices must be equipped. Therefore, almost all large and medium-sized passenger cars above one level are equipped with eddy current retarders. At present, the braking force distribution strategy between the retarder and the air braking system applied to the vehicle is relatively simple, either through the gear control or constant speed control through the retarder handle, or through the linkage of the brake pedal, the braking force When the pedal is s...

AI Technical Summary

Problems solved by technology

At present, there is no research and application of different control targets for different working conditions to distribute the braking force between the friction brakes of the front and rear axles and the eddy current retarder

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