Regeneration coordination brake control method for reducing eccentric wear of friction plate

Abstract

The invention discloses a regeneration coordination brake control method for reducing eccentric wear of a friction plate. The regeneration coordination brake control method comprises the following steps that whether a brake pedal is stepped down or not is detected; if the brake pedal is stepped down, the CRBS function is activated; whether the friction plate of the caliper brake displaces or not is detected or a pressure value of a front wheel cylinder is detected, and whether the value exceeds a preset threshold value or not is judged, wherein the preset threshold value is smaller than a piston starting pressure value of the caliper brake; and if the friction plate displaces or the pressure value of the front wheel cylinder exceeds a preset threshold value, a normally open liquid inlet valve of the front wheel cylinder is closed. The closing logic of the normally open liquid inlet valve of the front wheel cylinder is controlled by perfecting the CRBS function, and the normally open liquid inlet valve of the front wheel cylinder is closed when the inner friction plate of the caliper brake and the brake disc have a friction trend or is closed before the pressure value of the front wheel cylinder reaches the piston starting pressure of the caliper brake; and at the moment, the inner and outer friction plates do not rub with the brake disc, and inconsistent abrasion of the inner and outer friction plates can be avoided.

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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