US 11,834,018 B2
Method for operating a braking system and braking system
Andreas Kohl, Frankfurt (DE); and Thorsten Wickenhöfer, Frankfurt (DE)
Assigned to Continental Teves AG & Co. OHG, Frankfurt am Main (DE)
Filed by Continental Teves AG & Co. OHG, Frankfurt (DE)
Filed on Sep. 10, 2019, as Appl. No. 16/565,727.
Application 16/565,727 is a continuation of application No. PCT/EP2018/055438, filed on Mar. 6, 2018.
Claims priority of application No. 10 2017 204 559.0 (DE), filed on Mar. 20, 2017.
Prior Publication US 2020/0001846 A1, Jan. 2, 2020
Int. Cl. B60T 8/40 (2006.01); B60T 13/68 (2006.01); B60T 7/04 (2006.01); B60T 13/74 (2006.01); B60T 17/22 (2006.01)
CPC B60T 13/686 (2013.01) [B60T 7/042 (2013.01); B60T 13/745 (2013.01); B60T 17/22 (2013.01); B60T 2270/82 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A braking system for motor vehicles, comprising:
hydraulically actuatable wheel brakes;
an electrically controllable pressure-providing device configured to hydraulically actuate the hydraulically actuatable wheel brakes by actuation of an electric motor in a brake-by-wire operation;
a system pressure line connecting the electrically controllable pressure-providing device and the hydraulically actuatable wheel brakes;
a master brake cylinder configured to hydraulically actuate the hydraulically actuatable wheel brakes by actuation of a brake pedal;
a hydraulic line connecting the master brake cylinder and the hydraulically actuatable wheel brakes;
a separating valve disposed between at least one wheel brake of the hydraulically actuatable wheel brakes and the master brake cylinder along the hydraulic line;
a pressure medium reservoir under atmospheric pressure, the pressure medium reservoir hydraulically connected to the master brake cylinder via a pressure-balancing line; and
at least one sensor configured to detect a pressure medium surplus in which a pressure medium volume provided to the at least one wheel brake is unable to be absorbed by the electrically controllable pressure-providing device in the brake-by-wire operation,
wherein the separating valve is controlled to open a connection between the at least one wheel brake and the master brake cylinder in response to detecting the pressure medium surplus in the brake-by-wire operation to discharge the pressure medium surplus to the pressure medium reservoir via the hydraulic line, the master brake cylinder, and the pressure-balancing line.