Brake system for a motor vehicle having two electromechanical brake pressure generating devices
A technology of braking pressure and generating device, applied in the direction of braking transmission, brakes, vehicle components, etc., can solve the problem that the reaction time cannot be taken into account, avoid peripheral equipment measures, reduce the cost of braking system, simple and accurate monitoring and the effect of adjustment
Pending Publication Date: 2019-09-03
ROBERT BOSCH GMBH
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Problems solved by technology
For vehicles with a high degree of automation (i.e., highly automated and self-driving vehicles), the driver cannot take into account at least a certain reaction time as a fallback level
Method used
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Embodiment Construction
[0043] figure 1 A schematic diagram of a possible first embodiment of the braking system 19 of the invention is shown. Here, the first pressure generating device 1 is configured as a hydraulic ESP system. The ESP system is designed as a structural unit 18a. In addition to the electric actuator 5 , the unit comprises a pump 6 and valves 11 (high pressure switching valves, as well as directional valves, intake valves, exhaust valves) and a storage chamber 12 . Here, a typical ESP system is involved, the function of which is known. The ESP system includes two hydraulic connections in the direction of the master brake cylinder 13 (or the second brake pressure generating device 2), and 4 hydraulic connections in the direction of the wheel brake cylinders 4a, 4b, 4c, 4d connect.
[0044] The second brake pressure generating device 2 is designed as a piston system 7 . An electric actuator 10 adjusts a piston 8 which delimits a hydraulic chamber 9 . Hydraulic fluid is forced or ...
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The invention relates to a brake system for a motor vehicle. The brake system comprises two electromechanical brake pressure generating devices for generating hydraulic brake pressure in at least twowheel brake cylinders, wherein the first brake pressure generating device is designed as a hydraulic system, has a first electric actuator used for operating at least one pump and is configured to achieve dynamic adjustment of the driving of the motor vehicle by a targeted pressure modulation of the individual wheels in the at least two wheel brake cylinders; the second brake pressure generating device is designed as a piston cylinder device and has at least one piston that defines a hydraulic chamber and can be adjusted by operating a second electric actuator to change the volume of the hydraulic chamber. The first brake pressure generating device and the second brake pressure generating device are arranged in series with each other, and the first brake pressure generating device is connected to the at least two wheel brake cylinders by means of a respective direct hydraulic connection.
Description
technical field [0001] The invention relates to a brake system for a motor vehicle comprising two electromechanical brake pressure generating devices for generating hydraulic brake pressure in at least two wheel brake cylinders, wherein the first brake pressure The generating device is designed as a hydraulic system with a first electric actuator for actuating at least one pump and is configured to realize the control of the motor vehicle by means of targeted wheel-individual pressure modulation in the at least two wheel brake cylinders. wherein the second brake pressure generating device is configured as a piston-cylinder device having at least one piston which delimits a hydraulic chamber and can be adjusted by operating a second electric actuator to vary the volume of the hydraulic chamber, The first brake pressure generating device and the second brake pressure generating device are arranged in series with one another, wherein the first brake pressure generating device is ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60T13/66B60T8/48
CPCB60T8/4827B60T13/66B60T8/4081B60Y2400/81
Inventor D·德罗特勒夫S·施特伦格特
Owner ROBERT BOSCH GMBH