Method for operating a hydraulic brake system of a motor vehicle and a hydraulic braking system
AssigneeFord Global Technologies, LLC
InventorsThomas Svensson, Ian Moore, Rudolf Daniels
Life of this patent
Estimating the term…
Abstract
A method for operating a hydraulic brake system of a motor vehicle, comprising a pressure generating device used to build up additional brake pressure in a master brake cylinder or in addition to a master brake cylinder and in opposition to further pedal actuation wherein the additional pressure is a function of the pedal actuation travel distance. A method that reduces the limitations of a braking system's physical parameters on the build-up of additional braking pressure.
Claims17
A method for operating a hydraulic brake system of a motor vehicle, comprising:
- activating a pressure generating device used to build up additional brake pressure in a master brake cylinder or in addition to a master brake cylinder responsive to a predetermined minimum residual actuating travel distance of a brake pedal not being available, wherein the brake pedal of the motor vehicle is actuated in order to generate brake pressure in the master brake cylinder, wherein the residual actuating travel distance of the brake pedal is determined by calculating a difference between a predetermined maximum actuation travel distance and an actuation travel distance actually travelled from a no-load position of the brake pedal.
A hydraulic brake system of a motor vehicle comprising:
- a master brake cylinder that can be actuated by a brake pedal in order to generate a brake pressure;
- at least one wheel brake device that is in fluid-flow communication with the master brake cylinder;
- a pressure generating device in order to build up an additional brake pressure in the master brake cylinder;
- a pressure generating device that creates an additional force working to oppose further pedal actuation;
- and
- a controller including instructions to:
- determine a predetermined minimum residual actuation travel distance of the brake pedal;
- and
- if the predetermined minimum residual actuation travel distance is not available, activate the pressure generating device.
A method, comprising:
- generating braking pressure within the master cylinder of a hydraulic braking system via brake pedal actuation;
- generating additional pressure within the master brake cylinder or in addition to the master brake cylinder in response to brake pedal actuation distance via an additional pressure generating device;
- and
- disabling the pressure generating device in response to activation of a road handling control tool and anti-lock braking.
Dependencies are inferred from the claim text.