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US 10,308,231 B2Granted
Method for operating a brake booster, control device for carrying out the method, and a brake system comprising the brake booster and the control device
AssigneeRobert Bosch GmbH
InventorsMichael Butz, Manfred Gerdes, Patrick Christian Schaefer, Herbert Vollert
Life of this patent
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Abstract
A method for controlling a brake booster in a hydraulic brake system, in which the smallest partial pressure target value of at least three partial pressure target values is ascertained, and is then defined as the target pressure value and is then set using a brake booster.
Claims16
A method for controlling a brake booster in a hydraulic brake system, comprising:
- ascertaining a first one of at least three partial pressure target values;
- ascertaining a second one of the at least three partial pressure target values;
- ascertaining a third one of the at least three partial pressure target values;
- ascertaining a smallest partial pressure target value from the at least three partial pressure target values;
- defining the smallest partial pressure target value as a target pressure value for the brake system;
- and
- controlling the brake booster to set the target pressure value using the brake booster.
4 more elements
A method for controlling a brake booster in a hydraulic brake system, comprising:
- ascertaining a smallest partial pressure target value from at least three partial pressure target values;
- defining the smallest partial pressure target value as a target pressure value for the brake system;
- and
- controlling the brake booster to set the target pressure value using the brake booster, wherein a first one of the partial pressure target values is ascertained as a function of a wheel brake pressure, a second one of the partial pressure target values is ascertained as a function of actuation of a brake apparatus by a driver, and a third one of the partial pressure target values is ascertained as a function of the vehicle speed, wherein the target pressure value is compared to a pressure currently prevailing in the brake system, and a pressure difference between the target pressure value and the prevailing pressure is corrected by regulation, and wherein the difference is corrected through regulation by modifying the boosting of the brake booster by one of:
- i) adapting a target rotational speed of a motor of the brake booster, or ii) adapting the motor torque of the motor of the brake booster.
2 more elements
A control device to control a brake booster in a hydraulic brake system, the control device configured to:
- ascertain a first one of at least three partial pressure target values;
- ascertain a second one of the at least three partial pressure target values;
- ascertain a third one of the at least three partial pressure target values;
- ascertain a smallest partial pressure target value from the at least three partial pressure target values;
- define the smallest partial pressure target value as a target pressure value for the brake system;
- and
- control the brake booster to set the target pressure value using the brake booster.
4 more elements
A brake system, comprising:
- a brake booster;
- and a control device, the control device configured to:
- ascertain a first one of at least three partial pressure target values;
- ascertain a second one of the at least three partial pressure target values;
- ascertain a third one of the at least three partial pressure target values;
- ascertain a smallest partial pressure target value from the at least three partial pressure target values;
- define the smallest partial pressure target value as a target pressure value for the brake system;
- and
- control the brake booster to set the target pressure value using the brake booster.
6 more elements
Dependencies are inferred from the claim text.