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公开(公告)号：US20210268997A1
公开(公告)日：2021-09-02
申请号：US17255334
申请日：2019-05-24
Applicant: Robert Bosch GmbH
Inventor： Thomas Friedrich , Dirk Drotleff , Ralf Kleemann , Daniel Brenndoerfer , Bernd Hienz
Abstract: The disclosure relates to a hydraulic brake system for a highly automated or autonomous vehicle which includes three pressure generators which provide sufficient braking force even in a case of a fault. Two of the pressure generators are assigned in a redundant manner to one axle and a modulation unit is configured to hydraulically connect the two pressure generators to the wheel brakes of the first axle, and to perform individual brake pressure modulation in the wheel brakes. The third pressure generator is hydraulically separate from the other pressure generators, and another modulation unit is configured to hydraulically connect the third pressure generator to wheel brakes of another axle, and to perform individual brake pressure modulation in the wheel brakes.
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公开(公告)号：US11685346B2
公开(公告)日：2023-06-27
申请号：US17255334
申请日：2019-05-24
Applicant: Robert Bosch GmbH
Inventor： Thomas Friedrich , Dirk Drotleff , Ralf Kleemann , Daniel Brenndoerfer , Bernd Hienz
CPC classification number: B60T7/12 , B60T13/14 , B60T13/16 , B60T13/686 , B60T17/221 , B60T2270/402 , B60T2270/406 , B60T2270/413
Abstract: The disclosure relates to a hydraulic brake system for a highly automated or autonomous vehicle which includes three pressure generators which provide sufficient braking force even in a case of a fault. Two of the pressure generators are assigned in a redundant manner to one axle and a modulation unit is configured to hydraulically connect the two pressure generators to the wheel brakes of the first axle, and to perform individual brake pressure modulation in the wheel brakes. The third pressure generator is hydraulically separate from the other pressure generators, and another modulation unit is configured to hydraulically connect the third pressure generator to wheel brakes of another axle, and to perform individual brake pressure modulation in the wheel brakes.
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公开(公告)号：US11148651B2
公开(公告)日：2021-10-19
申请号：US16381859
申请日：2019-04-11
Applicant: Robert Bosch GmbH
Inventor： Bernd Hienz , Daniel Brenndoerfer , Dirk Drotleff , Ralf Kleemann , Thomas Friedrich
Abstract: A multiple-circuit, hydraulically open brake has two single-circuit pressure generators hydraulically connected in parallel between at least one fluid container and at least two wheel brakes and a modulation unit for individual brake pressure modulation in the at least two wheel brakes. A first pressure generator is assigned to a main system which has a first energy supply and a first evaluation and control unit, and a second single-circuit pressure generator is assigned to a secondary system, which has a second energy supply which is independent of the first energy supply, and a second evaluation and control unit. The second evaluation and control unit controls the second pressure generator. Components of the modulation unit are assigned to the main system so that the modulation unit and the first pressure generator are controlled by the first evaluation and control unit and supplied with energy by the first energy supply.
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公开(公告)号：US20190270385A1
公开(公告)日：2019-09-05
申请号：US16302168
申请日：2017-03-22
Applicant: Robert Bosch GmbH
Inventor： Dirk Drotleff , Jochen Bodmann , Stefan Strengert , Xun Yao
Abstract: A braking system is described for a vehicle, including a master brake cylinder, a first brake circuit with a first storage chamber, a first wheel brake cylinder, and a second wheel brake cylinder, the first wheel brake cylinder being hydraulically connected to the first storage chamber via a first wheel outlet valve, and the second wheel brake cylinder being hydraulically connected to the first storage chamber via a second wheel outlet valve, and including a second brake circuit with a second storage chamber, a third wheel brake cylinder, and a fourth wheel brake cylinder, the third wheel brake cylinder being hydraulically connected to the second storage chamber via a third wheel outlet valve, and the fourth wheel brake cylinder being hydraulically connected to the second storage chamber via a fourth wheel outlet valve. The first wheel outlet valve and the third wheel outlet valve are in each case continuously adjustable valves. Moreover, also described is a method for operating a braking system of a vehicle.
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公开(公告)号：US09925965B2
公开(公告)日：2018-03-27
申请号：US14761072
申请日：2013-11-21
Applicant: Robert Bosch GmbH
Inventor： Tobias Spoeri , Dirk Drotleff , Branimir Tokic
IPC: B60T8/32 , B60T8/40 , B60T13/16 , B60L1/00 , B60L7/18 , B60W30/18 , B60W50/10 , B60W10/08 , B60W10/184 , B60T7/04 , B60T13/58 , B60T13/66 , B60T13/68 , B60W20/14
CPC classification number: B60T8/3265 , B60L1/003 , B60L7/18 , B60L2240/423 , B60L2250/26 , B60T7/042 , B60T8/4054 , B60T8/4072 , B60T8/4086 , B60T13/161 , B60T13/166 , B60T13/586 , B60T13/662 , B60T13/686 , B60W10/08 , B60W10/184 , B60W20/14 , B60W30/18127 , B60W50/10 , B60W2540/12 , B60W2710/083 , B60W2710/182 , B60Y2300/89 , Y02T10/642 , Y02T90/16 , Y10S903/947
Abstract: A method for operating a braking system, having a front and rear axle, the braking system including: a brake booster having a brake input element, coupled to an actuating travel sensor for providing a signal of a braking input; a brake master cylinder coupled to the brake booster coupled to a brake medium reservoir; fluid lines, in fluidic communication with the brake master cylinder and the brake medium reservoir, and with braking devices of the wheels via a system of valves, each of the wheels being coupled to a generator generating a braking torque, the method including: generating a hydraulic free travel with the valves and controlling valves with a control unit, a hydraulic pressure build-up for decelerating a wheel speed being prevented by generating free travel during actuation of the brake input element; and generating a regenerative braking torque for decelerating the wheel speed, based on the braking input.
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Patent Agency Ranking
公开(公告)号：US11814019B2
公开(公告)日：2023-11-14
申请号：US17254666
申请日：2019-05-24
Applicant: Robert Bosch GmbH
Inventor： Thomas Friedrich , Dirk Drotleff , Ralf Kleemann , Daniel Brenndoerfer , Bernd Hienz
CPC classification number: B60T13/58 , B60T7/12 , B60T13/16 , B60T13/686 , B60T17/221 , B60T2270/402 , B60T2270/406 , B60T2270/413
Abstract: A hydraulic braking system for a vehicle has two sub-braking systems hydraulically separated from one another. A first sub-braking system of a first axle has a first circuit, a main system with a first power supply and a first ECU, and a secondary system with a second power supply and a second ECU. The first circuit includes first and second pressure generators assigned, respectively, to the main system and the secondary system, in parallel between a fluid container and wheel brakes. A modulation unit connects the pressure generators to the wheel brakes. A second sub-braking system of a second axle includes a second circuit and an auxiliary system with a third power supply and a third ECU. The second circuit includes a pressure generator assigned to the auxiliary system arranged between a fluid container and wheel brakes, and a modulation unit connecting the pressure generators to the wheel brakes.
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公开(公告)号：US11584346B2
公开(公告)日：2023-02-21
申请号：US16975295
申请日：2019-01-07
Applicant: Robert Bosch GmbH
Inventor： Stefan Strengert , Thomas Friedrich , Dirk Drotleff , Ralf Kleemann
Abstract: A multi-circuit hydraulically closed braking system includes at least two wheel brakes, which are each associated with a braking circuit, two multi-circuit pressure generators, which are connected hydraulically in series between a fluid container and the at least two wheel brakes, and a hydraulic unit for hydraulic connection of the pressure generators to the at least two wheel brakes and for individual brake pressure modulation in the at least two wheel brakes. A first pressure generator is configured as a plunger system and is associated with a primary system which comprises a first power supply and a first evaluation and control unit for controlling the first pressure generator. A second pressure generator is configured as a pump system and is associated with a secondary system, which comprises a second power supply, independent of the first power supply, and a second evaluation and control unit.
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公开(公告)号：US20210387601A1
公开(公告)日：2021-12-16
申请号：US17419437
申请日：2020-02-11
Applicant: Robert Bosch GmbH
Inventor： Dirk Drotleff , Xun Yao
Abstract: An operational method for controlling a first brake pressure generator. The operational method includes reading the detected wheel speeds into the brake pressure generator control unit, simulating a control strategy of the secondary control unit for controlling the hydraulic unit based on the wheel speeds so that a brake pressure required at the respective wheel is ascertained, predicting the pressure resulting from the control strategy of the secondary control unit and the brake pressure at the first brake pressure generator, and controlling the first brake pressure generator in accordance with the predicted resulting pressure if the predicted resulting pressure exceeds a limit value, so that the pressure resulting at the brake pressure generator is lower than the predicted pressure due to an activation of the first brake pressure generator.
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公开(公告)号：US20210221348A1
公开(公告)日：2021-07-22
申请号：US17254666
申请日：2019-05-24
Applicant: Robert Bosch GmbH
Inventor： Thomas Friedrich , Dirk Drotleff , Ralf Kleemann , Daniel Brenndoerfer , Bernd Hienz
Abstract: A hydraulic braking system for a vehicle has two sub-braking systems hydraulically separated from one another. A first sub-braking system of a first axle has a first circuit, a main system with a first power supply and a first ECU, and a secondary system with a second power supply and a second ECU. The first circuit includes first and second pressure generators assigned, respectively, to the main system and the secondary system, in parallel between a fluid container and wheel brakes. A modulation unit connects the pressure generators to the wheel brakes. A second sub-braking system of a second axle includes a second circuit and an auxiliary system with a third power supply and a third ECU. The second circuit includes a pressure generator assigned to the auxiliary system arranged between a fluid container and wheel brakes, and a modulation unit connecting the pressure generators to the wheel brakes.
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公开(公告)号：US20210031742A1
公开(公告)日：2021-02-04
申请号：US16925691
申请日：2020-07-10
Applicant: Robert Bosch GmbH
Inventor： Dirk Drotleff , Xun Yao
Abstract: A hydraulic braking system for a motor vehicle, including at least two brake circuits which each include at least one hydraulically actuatable wheel brake and at least one electrically operable pressure generator, the pressure generators being activatable as a function of a brake request of the motor vehicle or a driver of the motor vehicle. A respective electric actuator is assigned to each pressure generator for its operation, and at least one activatable emergency operation valve is interconnected between the brake circuits, which in a first switching position disconnects the brake circuits from one another and in a second switching position connects them to one another.
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