Method and device for adjusting a zero position of a brake pedal
AssigneeAudi AG
InventorTobias Brok
Life of this patent
Estimating the term…
Abstract
A method for adjusting a zero position of a brake pedal of a brake system of a motor vehicle. A separating valve arranged at least between a main brake cylinder and the respective wheel brakes of the brake system is opened in order to reduce a volume of the brake fluid in a secondary circuit of the brake system. At least one separating valve is then closed again after the volume of the brake fluid of the secondary circuit has been reduced by the predetermined volume amount, and the brake pedal is moved to a new zero position.
Claims14
A method for adjusting a zero position of a brake pedal of a brake system of a motor vehicle, comprising:
- a lone separating valve, arranged in a secondary circuit of the brake system between a main brake cylinder and respective wheel brakes of the secondary circuit, is opened in order to reduce a volume of a brake fluid in the secondary circuit of the brake system, and wherein the lone separating valve is then closed again after the volume of the brake fluid of the secondary circuit has been reduced by a predetermined amount, whereby the brake pedal is moved to a new zero position, and wherein the brake system comprises a tandem brake cylinder housing a primary piston in fluid communication with a primary circuit and a secondary piston in fluid communication with the secondary circuit, and wherein only the brake fluid level of the secondary circuit is reduced by the opening of the lone separating valve.
A brake system comprising:
- a brake pedal that it adjustable in its zero position and a lone separating valve arranged in a secondary circuit of the brake system between a main brake cylinder and respective wheel brakes of the secondary circuit, wherein the lone separating valve is configured to become open as a function of control commands in order to reduce a volume of a brake fluid in the secondary circuit of the brake system, and wherein the lone separating valve is further configured to become closed again after the volume of the brake fluid of the secondary circuit has been reduced by a predetermined amount, and wherein the brake system comprises a tandem brake cylinder housing a primary piston in fluid communication with a primary circuit and a secondary piston in fluid communication with the secondary circuit and wherein only the brake fluid level of the secondary circuit is reduced by the opening of the lone separating valve.
Dependencies are inferred from the claim text.