Method for braking a vehicle with a hydraulic vehicle brake and an electromechanical braking device
AssigneeRobert Bosch GmbH
InventorsDieter Blattert, Edith Mannherz, Frank Baehrle-Miller, Helmut Wolff
Life of this patent
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Abstract
A method for braking a vehicle includes at least reducing a hydraulic brake pressure in at least one wheel brake device disposed on a vehicle axle in response to an at least partial failure of a brake boosting of a hydraulic brake with at least one first brake circuit and at least one second brake circuit. The method further includes operating an electric brake motor of an electromechanical braking device to produce a braking force on the at least one wheel brake device.
Claims19
A method for braking a vehicle in response to an at least partial failure of a brake boosting of a hydraulic brake system with at least one first brake circuit and at least one second brake circuit, the method comprising:
- detecting the at least partial failure of the brake boosting of the hydraulic brake system and, in response to the detection of the at least partial failure:
- operating the hydraulic brake system to reduce a hydraulic brake pressure in at least one wheel brake device disposed on a first vehicle axle;
- operating at least one electric brake motor of an electromechanical braking device to produce a braking force on the at least one wheel brake device;
- and
- in response to receiving a further braking demand during a predetermined period of time after termination of a braking demand, adjusting a plurality of valves disposed on at least one first wheel brake device disposed on a front axle of the vehicle and a plurality of valves disposed on at least one second wheel brake device disposed on a rear axle of the vehicle such that the at least one first wheel brake device and the at least one second wheel brake device are at least partially hydraulically coupled.
A regulating or control unit operably connected to a hydraulic brake system and an electromechanical braking device and configured to produce non-transitory control signals to operate the hydraulic brake system and the electromechanical braking device to, in response to an at least partial failure of a brake boosting of the hydraulic brake system:
- operate the hydraulic brake system to reduce a hydraulic brake pressure in at least one wheel brake device disposed on a first vehicle axle;
- operate at least one electric brake motor of the electromechanical braking device to produce the braking force on the at least one wheel brake device;
- and
- in response to receiving a further braking demand during a predetermined period of time after termination of a braking demand, adjusting a plurality of valves disposed on at least one first wheel brake device disposed on a front axle of the vehicle and a plurality of valves disposed on at least one second wheel brake device disposed on a rear axle of the vehicle such that the at least one first wheel brake device and the at least one second wheel brake device are at least partially hydraulically coupled.
A brake system for a vehicle, comprising:
- a hydraulic brake system including at least one first brake circuit and at least one second brake circuit;
- at least one wheel brake device disposed on a vehicle axle and operably connected to one of the first brake circuit and the second brake circuit;
- an electromechanical braking device including at least one electric brake motor operable to produce a braking force on the at least one wheel braking device;
- and
- a regulating or control unit operatively connected to the at least one wheel brake and the at least one electric brake motor, and configured to, in response to an at least partial failure of a brake boosting of the hydraulic brake system:
- operate the hydraulic brake system to reduce a hydraulic brake pressure in the at least one wheel brake device;
- operate the electric brake motor of the electromechanical braking device to produce the braking force on the at least one wheel brake device;
- and
- in response to receiving a further braking demand during a predetermined period of time after termination of a braking demand, adjust a plurality of valves disposed on at least one first wheel brake device disposed on a front axle of the vehicle and a plurality of valves disposed on at least one second wheel brake device disposed on a rear axle of the vehicle such that the at least one first wheel brake device and the at least one second wheel brake device are at least partially hydraulically coupled.
Dependencies are inferred from the claim text.