Electronically controlled braking system
First Claim
1. An electronically controllable braking system for motor vehicles comprising:
- a brake pressure generator unit with a master cylinder for the generation of a brake pressure;
a brake pedal via which an actuation force can be introduced into the brake pressure generator unit in order to actuate the brake pressure generator unit;
an electronically controllable brake booster either for amplifying the actuation force which is introduced via the brake pedal for the actuation of the brake pressure generator unit, or for effecting an actuation of the brake pressure generator unit;
a first sensor which senses a parameter for an amplification of the electronically controllable brake booster,a second sensor which senses the brake pressure generated by the brake pressure generator unit; and
an electronic control unit that determines the actuation force which is introduced via the brake pedal from the brake pressure generated by the brake pressure generator unit and the parameter which is related to the amplification of the electronically controllable brake booster, the electronic control unit (ECU) evaluating the actuation force (F) which is introduced via the brake pedal (1) in order to decide whether a driving dynamics control process is to be continued or whether the driving dynamics control process is to be aborted and an emergency braking operation or an intentional braking operation, respectively, is to be carried out.
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Accused Products
Abstract
In an electronically controllable braking system for motor vehicles with a brake pressure generator unit which comprises a master cylinder for generating a brake pressure, a brake pedal via which an actuation force can be introduced into the brake pressure generator unit for actuating the brake pressure generator unit, an electronically controllable brake booster, either for amplifying the actuation force introduced via the brake pedal for the actuation of the brake pressure generator unit, or for effecting an actuation of the brake pressure generator unit, as well as sensors which sense the brake pressure generated by the brake pressure generator unit and a parameter for an electronic control unit, which is related to the amplification of the electronically controllable brake pressure booster, there is provided, in order to comply with a very high safety standard at relatively low cost expenditures, that the electronic control unit determines the actuation force which is introduced via the brake pedal from the brake pressure generated by the brake pressure generator unit and the parameter which is related to the amplification of the electronically controllable brake booster. This results in the advantage that the actuation force which is introduced via the brake pedal can be determined reliably and safely without necessitating the employment of a force sensor.
41 Citations
18 Claims
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1. An electronically controllable braking system for motor vehicles comprising:
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a brake pressure generator unit with a master cylinder for the generation of a brake pressure; a brake pedal via which an actuation force can be introduced into the brake pressure generator unit in order to actuate the brake pressure generator unit; an electronically controllable brake booster either for amplifying the actuation force which is introduced via the brake pedal for the actuation of the brake pressure generator unit, or for effecting an actuation of the brake pressure generator unit; a first sensor which senses a parameter for an amplification of the electronically controllable brake booster, a second sensor which senses the brake pressure generated by the brake pressure generator unit; and an electronic control unit that determines the actuation force which is introduced via the brake pedal from the brake pressure generated by the brake pressure generator unit and the parameter which is related to the amplification of the electronically controllable brake booster, the electronic control unit (ECU) evaluating the actuation force (F) which is introduced via the brake pedal (1) in order to decide whether a driving dynamics control process is to be continued or whether the driving dynamics control process is to be aborted and an emergency braking operation or an intentional braking operation, respectively, is to be carried out. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electronically controllable braking system for motor vehicles comprising:
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a brake pressure generator unit with a master cylinder for the generation of a brake pressure; an electronically controllable brake booster for applying an input force to the brake pressure generator unit in order to actuate the brake pressure generator unit; a brake pedal via which an actuation force can be introduced via the electronically controllable brake booster into the brake pressure generator unit in order to actuate the brake pressure generator unit; a first sensor which senses a parameter for an amplification of the electronically controllable brake booster, a second sensor which senses the brake pressure generated by the brake pressure generator unit; and an electronic control unit that determines the actuation force that is introduced via the brake pedal from the brake pressure generated by the brake pressure generator unit and the parameter which is related to the amplification of the electronically controllable brake booster, wherein, during a driving dynamics control process, the electronic control unit evaluates the actuation force which is introduced via the brake pedal in order to decide to perform one of continuing the driving dynamics control process and aborting the driving dynamics control process. - View Dependent Claims (11, 12, 13)
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14. An electronically controllable braking system for motor vehicles comprising:
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a brake pressure generator unit with a master cylinder for the generation of a brake pressure; a brake booster for applying an input force to the brake pressure generator unit in order to actuate the brake pressure generator unit; a brake pedal via which an actuation force can be introduced via the brake booster into the brake pressure generator unit in order to actuate the brake pressure generator unit; a first sensor which senses a differential pressure of the brake booster; a second sensor which senses the brake pressure generated by the brake pressure generator unit; and an electronic control unit that determines the actuation force that is introduced via the brake pedal from the brake pressure generated by the brake pressure generator unit and the differential pressure of the brake booster, the electronic control unit further being programmed with the known transmission ratio of the brake booster and performing error detection monitoring of said first sensor and said second sensor to detect a error. - View Dependent Claims (15, 16, 17, 18)
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Specification