US 12,151,657 B2
Service brake application utilizing a multi-circuit hydraulic-power vehicle brake system
Christian Woerz, Beilstein (DE); Dirk Foerch, Neuenstadt/Stein (DE); Herbert Vollert, Vaihingen/Enz (DE); Jens Wagner, Untergruppenbach (DE); and Matthias Kistner, Bretzfeld (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Aug. 27, 2021, as Appl. No. 17/446,243.
Claims priority of application No. 102020212413.2 (DE), filed on Sep. 30, 2020.
Prior Publication US 2022/0097666 A1, Mar. 31, 2022
Int. Cl. B60T 13/68 (2006.01); B60L 7/24 (2006.01); B60T 13/16 (2006.01); B60T 13/58 (2006.01); B60T 13/62 (2006.01)
CPC B60T 13/686 (2013.01) [B60L 7/24 (2013.01); B60T 13/161 (2013.01); B60T 13/586 (2013.01); B60T 13/62 (2013.01); B60T 2270/402 (2013.01); B60T 2270/604 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of service braking utilizing a multi-circuit hydraulic-power vehicle brake system, the vehicle brake system including (a) a first brake circuit, (b) a second brake circuit, (c) a power brake-pressure generator connected to the first brake circuit via a first power valve and connected to the second brake circuit via a second power valve, (d) a first one or more hydraulic wheel brakes each connected by a respective first-circuit inlet valve to the first brake circuit, (e) a second one or more hydraulic wheel brakes each connected by a respective second-circuit inlet valve to the second brake circuit, and (f) for each of the hydraulic wheel brakes, a respective outlet valve by opening of which wheel-brake pressure in the respective hydraulic wheel brake is reducible, the method comprising:
generating a brake-circuit pressure in the first brake circuit by the power brake-pressure generator opening the first power valve in a period in which:
the second power valve is closed; and
the outlet valves of each of the hydraulic wheel brakes connected to the first brake circuit and connected to the second brake circuit are all closed.