A Regenerative Coordinated Braking Control Method for Reducing Eccentric Wear of Friction Plates

Abstract

The invention discloses a regenerative coordinated braking control method for reducing eccentric wear of friction plates, which comprises the following steps: detecting whether the brake pedal is stepped on; if the brake pedal is stepped on, activating the CRBS function; detecting the friction of the caliper brake disc displacement or detect the pressure value of the front wheel cylinder, and judge whether the value exceeds the preset threshold value; wherein, the preset threshold value is less than the piston starting pressure value of the caliper brake; if the friction disc is displaced or the front wheel When the pressure value of the wheel cylinder exceeds the preset threshold value, the normally open liquid inlet valve of the front wheel cylinder is closed. The present invention controls the closing logic of the normally open liquid inlet valve of the front wheel cylinder by perfecting the CRBS function, because the normally open liquid inlet valve of the front wheel cylinder is closed when the internal friction plate of the caliper brake and the brake disc have a friction tendency, or It is closed before the pressure value of the front wheel cylinder reaches the piston start pressure of the caliper brake. At this time, no friction occurs between the inner and outer friction plates and the brake disc, which can avoid inconsistent wear of the inner and outer friction plates.

Description

technical field [0001] The invention belongs to the technical field of automobile braking, and in particular relates to a regenerative coordinated braking control method for reducing eccentric wear of friction plates. Background technique [0002] Such as figure 1 As shown, when the driver actively steps on the brake pedal, the CRBS (ie: Cooperative Regenerative BrakeSystems, coordinated regenerative braking system) function in the ESC (ie: Electronic Stability Controller, Electronic Stability Controller) system will be activated, and the front wheel The normally open fluid inlet valve of the cylinder is closed to prevent the brake fluid from flowing into the wheel cylinder; the normally closed fluid outlet valve of the rear wheel cylinder is opened to allow the brake fluid entering the rear wheel cylinder to flow into the low-pressure accumulator. At the same time, the CRBS function will request the VCU (vehicle controller) anti-drag motor to generate a corresponding decel...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a regenerative coordinated braking control method that reduces the eccentric wear of the friction plate, and solve the problem of inconsistent wear of the inner and outer friction plates of the caliper brake after the vehicle has passed the endurance test

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