Control device for a braking system of a vehicle, and method for operating a braking system of a vehicle

Patent metadata

Field	Value
Publication number	US-9963129-B2
Application number	US-201414771851-A
Country	US
Kind code	B2
Filing date	Jan 10, 2014
Priority date	Mar 6, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A control device for a vehicle braking system including an electronic device to control at least one first hydraulic component and second hydraulic component of the braking system so that a first brake pressure in at least one first wheel brake cylinder of a first brake circuit of the braking system is settable corresponding to a predefined first setpoint brake pressure or a setpoint brake pressure profile, and a second brake pressure is settable in at least one second wheel brake cylinder of a second brake circuit of the braking system corresponding to a predefined second setpoint brake pressure or setpoint brake pressure profile, the electronic device being configured to select an operating mode to be performed from at least two workable operating modes based on at least one provided specified variable. Also described is a braking system for a vehicle and a method for operating a vehicle braking system.

First claim

What is claimed is:

1. A control device for a braking system of a vehicle, comprising:
an electronic device to control at least one first hydraulic component of the braking system and a second hydraulic component of the braking system so that the braking system is operable in at least one first workable operating mode so that at least the controlled first hydraulic component is usable at a first frequency and/or at a first output and the controlled second hydraulic component at a second frequency and/or at a second output so that a first brake pressure is settable in at least one first wheel brake cylinder of a first brake circuit of the braking system corresponding to a predefined first setpoint brake pressure or setpoint brake pressure profile, and a second brake pressure in at least one second wheel brake cylinder of a second brake circuit of the braking system corresponding to a predefined second setpoint brake pressure or setpoint brake pressure profile;
wherein the electronic device is configured to operate the braking system in at least one second workable operating mode so that at least the controlled first hydraulic component is usable at a frequency lower than the first frequency and/or an output lower than the first output and the controlled second hydraulic component at a frequency higher than the second frequency and/or an output higher than the second output so that the first brake pressure is settable corresponding to the predefined first setpoint brake pressure or setpoint brake pressure profile in the at least one first wheel brake cylinder and the second brake pressure is settable corresponding to the predefined second setpoint brake pressure or setpoint brake pressure profile in the at least one second wheel brake cylinder, and
wherein the electronic device is configured to select an operating mode to be carried out from the at least two workable operating modes based on at least one provided specified variable, and to operate the braking system in the selected operating mode so that the first brake pressure in the at least one first wheel brake cylinder and the second brake pressure in the at least one second wheel brake cylinder are settable.

2. The control device of claim 1 , wherein the electronic device is configured to take into account a vehicle type of the vehicle, a driving situation, a traffic situation and/or a surroundings condition as the at least one provided specified variable.

3. The control device of claim 1 , wherein the electronic device is configured to control at least one plunger, at least one pump, at least one wheel inlet valve, at least one wheel outlet valve, at least one high-pressure switchover valve and/or at least one switchover valve as the first component and/or the second component.

4. The control device of claim 3 , wherein the electronic device is configured to operate the braking system in a wheel outlet valve-using operating mode selected from the at least two workable operating modes so that a master brake cylinder internal pressure in a master brake cylinder of the braking system is settable with the at least one activated plunger to be equal to a maximum of the first brake pressure and the second brake pressure, and the first brake pressure or the second brake pressure is reducible with the at least one activated wheel outlet valve compared to the master brake cylinder internal pressure.

5. The control device of claim 3 , wherein the electronic device is configured to operate the braking system in a pump-using operating mode selected from the at least two workable operating modes so that the master brake cylinder internal pressure is settable with the at least one activated plunger to be equal to a minimum of the first brake pressure and the second brake pressure, and the first brake pressure or the second brake pressure is increasable at least with the at least one activated pump compared to the master brake cylinder internal pressure.

6. The control device of claim 3 , wherein the electronic device is configured to operate the braking system in a plunger-using operating mode selected from the at least two workable operating modes so that the first brake pressure and the second brake pressure are increasable simultaneously by the master brake cylinder internal pressure being settable with the at least one activated plunger to be equal to the maximum of the first brake pressure and the second brake pressure, and the first brake pressure and the second brake pressure being reducible simultaneously by the master brake cylinder internal pressure being settable with the at least one activated plunger to be equal to the minimum of the first brake pressure and of the second brake pressure.

7. The control device of claim 3 , wherein the electronic device is configured to operate the braking system in a plunger-using operating mode selected from the at least two workable operating modes so that the first brake pressure and the second brake pressure are increasable simultaneously by the master brake cylinder internal pressure being settable with the at least one activated plunger to be higher than the maximum of the first brake pressure and the second brake pressure, and the first brake pressure and the second brake pressure being reducible simultaneously by the master brake cylinder internal pressure being settable with the at least one activated plunger to be lower than the minimum of the first brake pressure and of the second brake pressure.

8. A braking system for a vehicle, comprising:
a control device, including an electronic device to control at least one first hydraulic component of the braking system and a second hydraulic component of the braking system so that the braking system is operable in at least one first workable operating mode so that at least the controlled first hydraulic component is usable at a first frequency and/or at a first output and the controlled second hydraulic component at a second frequency and/or at a second output so that a first brake pressure is settable in at least one first wheel brake cylinder of a first brake circuit of the braking system corresponding to a predefined first setpoint brake pressure or setpoint brake pressure profile, and a second brake pressure in at least one second wheel brake cylinder of a second brake circuit of the braking system corresponding to a predefined second setpoint brake pressure or setpoint brake pressure profile;
wherein the electronic device is configured to operate the braking system in at least one second workable operating mode so that at least the controlled first hydraulic component is usable at a frequency lower than the first frequency and/or an output lower than the first output and the controlled second hydraulic component at a frequency higher than the second frequency and/or an output higher than the second output so that the first brake pressure is settable corresponding to the predefined first setpoint brake pressure or setpoint brake pressure profile in the at least one first wheel brake cylinder and the second brake pressure is settable corresponding to the predefined second setpoint brake pressure or setpoint brake pressure profile in the at least one second wheel brake cylinder, and
wherein the electronic device is configured to select an operating mode to be carried out from the at least two workable operating modes based on at least one provided specified variable, and to operate the braking system in the selected operating mode so that the first brake pressure in the at least one first wheel brake cylinder and the second brake pressure in the at least one second wheel brake cylinder are settable.

9. A method for operating a braking system of a vehicle including the steps:
selecting an operating mode to be carried

Assignees

• Bosch Gmbh Robert

Inventors

• Betz Christoph
• Reichert Michael
• Bunk Michael

Classifications

• B60T2270/604

  Merging friction therewith; Adjusting their repartition · CPC title

• B60T13/66 Primary

  Electrical control in fluid-pressure brake systems · CPC title

• B60T8/17 Primary

  Using electrical or electronic regulation means to control braking {(detecting or indicating faulty operation B60T8/885)} · CPC title