Patent ID: 11884254
Assignee: ROBERT BOSCH GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. A method for increasing a brake pressure in a first wheel brake cylinder and for limiting a brake pressure in a second wheel brake cylinder of a vehicle brake system, the method comprising the following steps:
increasing a first brake pressure in the first wheel brake cylinder by, during an operation brought about by a driver's force and/or motorically of at least one brake pressure buildup device, controlling and/or holding a first wheel inlet valve assigned to the first wheel brake cylinder in its open state, and controlling and/or holding a first wheel outlet valve assigned to the first wheel brake cylinder in its closed state, so that brake fluid is transferred through at least the first wheel inlet valve in its open state into the first wheel brake cylinder by the operation of the at least one brake pressure buildup;
at least limiting an increase of a second brake pressure in the second wheel brake cylinder during the transfer of brake fluid into the first wheel brake cylinder by controlling and/or holding a second wheel inlet valve assigned to the second wheel brake cylinder in its closed state, and controlling a second wheel outlet valve, assigned to the second wheel brake cylinder, at least at times into its open state; and
controlling the second wheel outlet valve, during the transfer of brake fluid into the first wheel brake cylinder, with a pulse width-modulated signal that brings about that during the transfer of brake fluid into the first wheel brake cylinder, the second wheel outlet valve is permanently in its open state.