Vehicle brake system and method for increasing brake pressure in first wheel brake cylinder and limiting brake pressure in second wheel brake cylinder of vehicle brake system
A wheel brake cylinder, brake pressure technology, applied in the direction of brake control system, brakes, vehicle components, etc., can solve the problem of not being able to completely restrain
Active Publication Date: 2020-12-04
ROBERT BOSCH GMBH
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Problems solved by technology
However, the undesired flow of brake fluid 50 into the second wheel brake cylinder 14 cannot always be completely suppressed / prevented by means of the closed second wheel inlet valve 20
Method used
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[0021] Figures 2a to 2d Shows a partial schematic view of the vehicle braking system and serves to explain the brake pressure boost in the first wheel cylinder of the vehicle braking system and the braking in the second wheel cylinder of the vehicle braking system Coordinate system of the first embodiment of the method of pressure limitation.
[0022] exist Figure 2a The vehicle brake system, schematically and partially reproduced in , has at least one brake circuit 10 with a first wheel brake cylinder 12, a second wheel brake cylinder 14, assigned to the first wheel brake The first wheel inlet valve 16 of the cylinder 12 , the first wheel outlet valve 18 assigned to the first wheel brake cylinder 12 , the second wheel inlet valve 20 assigned to the second wheel brake cylinder 14 and the second wheel inlet valve 20 assigned to the second wheel brake cylinder 12 The second wheel outlet valve 22 of the second wheel brake cylinder 14 . Only as an optional development, the bra...
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The present invention relates to a vehicle brake system and to a corresponding method for increasing brake pressure in a first wheel brake cylinder (12) and limiting brake pressure in a second wheel brake cylinder (14) of a vehicle brake system, having the steps: increasing a first brake pressure present in the first wheel brake cylinder (12) by virtue of a first wheel inlet valve (16) being adjusted in controlled fashion into / held in the open state thereof and a first wheel outlet valve (18) being adjusted in controlled fashion into / held in the closed state thereof during driver-force-imparted and / or motorized operation of at least one brake pressure build-up device (30, 36), and at least limiting an increase of a second brake pressure prevailing in the second wheel brake cylinder (14) during the transfer of brake fluid into the first wheel brake cylinder (12) by virtue of a second wheel inlet valve (20) being adjusted in controlled fashion into / held in the closed state thereof and asecond wheel outlet valve (22) being at least temporarily adjusted in controlled fashion into the open state thereof, wherein the second wheel outlet valve (22) is activated by means of a pulse-width-modulated signal such that the second wheel outlet valve (22) is permanently present in the open state thereof during the transfer of brake fluid.
Description
technical field [0001] The invention relates to a vehicle braking system. The invention likewise relates to a method for increasing the brake pressure in a first wheel brake cylinder of a vehicle brake system and limiting the brake pressure in a second wheel brake cylinder of a vehicle brake system. Background technique [0002] FIGS. 1 a to 1 c show partial schematic diagrams of a vehicle brake system and a coordinate system for explaining the conventional mode of action for increasing the brake pressure while limiting the brake pressure. [0003] FIG. 1 a shows a partial schematic view of a conventional braking system, which is described, for example, in DE 10 2012 222 974 A1. A conventional brake system has at least one brake circuit 10 with a first wheel brake cylinder 12 , a second wheel brake cylinder 14 , a first wheel inlet associated with the first wheel brake cylinder 12 Valve 16 , first wheel outlet valve 18 assigned to first wheel brake cylinder 12 , second whe...
Claims
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IPC IPC(8): B60T8/36
CPCB60T8/36B60T8/4072B60T8/4081B60T8/442B60T8/4872B60T2220/04B60T2270/604
Inventor 宮川秀一J·博德曼长仓安孝
Owner ROBERT BOSCH GMBH