Braking system having a redundant parking brake function
AssigneeContinental Automotive Technologies GmbH
InventorsMartin Brenn, Roman Büchler, Thorsten Ullrich
Life of this patent
Estimating the term…
Abstract
A braking system for a motor vehicle has a plurality of hydraulic brake units for braking each braking one wheel of the motor vehicle and a first electric parking brake actuator for braking a first wheel and a second electric parking brake actuator for braking a second wheel. A first control device comprises a first hydraulic controller which is designed and set up to drive the plurality of hydraulic brake units. In order to ensure parking brake redundancy, the first control device has a driver for driving the first parking brake actuator. A second control device is also provided, which comprises a driver for driving the first parking brake actuator and a driver for driving the second parking brake actuator.
Claims20
A braking system for a motor vehicle comprising:
- a plurality of hydraulic brake units each braking one wheel of the motor vehicle;
- a first electric parking brake actuator for braking a first wheel;
- a second electric parking brake actuator for braking a second wheel;
- a first control device which comprises a first hydraulic controller which is designed and set up to drive the plurality of hydraulic brake units wherein the first control device comprises a first driver for driving the first parking brake actuator wherein the first control device does not comprise a driver for driving the second parking brake actuator;
- and
- a second control device, which comprises a second driver for driving the first parking brake actuator and a third driver for driving the second parking brake actuator.
A braking system for a motor vehicle comprising:
- a plurality of hydraulic brake units each braking one wheel of the motor vehicle;
- a first electric parking brake actuator for braking a first wheel;
- a second electric parking brake actuator for braking a second wheel;
- a first control device which comprises a first hydraulic controller which is designed and set up to drive the plurality of hydraulic brake units wherein the first control device comprises at least a first driver for driving the first parking brake actuator and for driving the second parking brake actuator;
- a second control device, which comprises at least one second driver for driving the first parking brake actuator and for driving the second parking brake actuator
- four wheel speed sensors connected to the second control device such that the signals from the four wheel speed sensors can be transmitted to the second control device;
- and
- a multiplexer set up to switch over the signals from two of the four wheel speed sensors to the first control device.
A motor vehicle comprising:
- a front axle;
- a rear axle;
- and
- a braking system having:
- a plurality of hydraulic brake units each braking one wheel of the motor vehicle;
- a first electric parking brake actuator for braking a first wheel;
- a second electric parking brake actuator for braking a second wheel;
- a first control device which comprises a first hydraulic controller which is designed and set up to drive the plurality of hydraulic brake units wherein the first control device comprises a first driver for driving the first parking brake actuator wherein the first control device does not comprise a driver for driving the second parking brake actuator;
- and
- a second control device, which comprises a second driver for driving the first parking brake actuator and a third driver for driving the second parking brake actuator.
Dependencies are inferred from the claim text.