Patent ID: 6874858

Claim:
An automotive anti-lock control system comprising: a brake fluid pressure generator; a wheel brake; a connection line for connecting the brake fluid pressure generator and the wheel brake; a release line for connecting a reservoir for reserving brake fluid and the wheel brake; a normally-opened electromagnetic valve interposed along the connection line; a normally-closed electromagnetic valve interposed along the release line; a wheel speed sensor for detecting the wheel speed of a wheel; and anti-lock controller which determines a lockup tendency of the wheel based on the wheel speed detected by the wheel speed sensor and controls the brake fluid pressure of the wheel brake to a pressure decreasing mode where the normally-opened electromagnetic valve is closed and the normally-closed electromagnetic valve is opened, a holding mode where the normally-opened electromagnetic valve is closed and the normally-closed electromagnetic valve is closed, and a pressure increasing mode where the normally-opened electromagnetic valve is opened and the normally-closed electromagnetic valve is closed, wherein the anti-lock controller controls such that a current value applied to the normally-opened electromagnetic valve in the holding mode becomes smaller than a current value applied to the normally-opened electromagnetic valve in the pressure decreasing mode in a state in which a predetermined condition is established.