- Patent Title: Vehicle brake system and method for increasing brake pressure in a first wheel brake cylinder and limiting brake pressure in a second wheel brake cylinder of a vehicle brake system
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Application No.: US17047809Application Date: 2019-04-11
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Publication No.: US11884254B2Publication Date: 2024-01-30
- Inventor: Shuichi Miyagawa , Jochen Bodmann , Yasutaka Nagakura
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Norton Rose Fulbright US LLP
- Agent Gerard A. Messina
- Priority: DE 2018206566.7 2018.04.27
- International Application: PCT/EP2019/059189 2019.04.11
- International Announcement: WO2019/206647A 2019.10.31
- Date entered country: 2020-10-15
- Main IPC: B60T8/40
- IPC: B60T8/40 ; B60T8/44 ; B60T8/48

Abstract:
A vehicle brake system and method for increasing the brake pressure in a first wheel brake cylinder and for limiting the brake pressure in a second wheel brake cylinder of a vehicle brake system. The method includes increasing a first brake pressure in the first wheel brake cylinder by controlling/holding a wheel inlet valve in its open state and controlling/holding a first wheel outlet valve in its closed state, and 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/holding a second wheel inlet valve in its closed state and controlling a second wheel outlet valve into its open state. The second wheel outlet valve is controlled with a pulse width-modulated signal so that during the transfer of brake fluid, the second wheel outlet valve is permanently in its open state.
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