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Brake control system

A brake control and pressure control technology, applied in the field of vehicle brake control systems, can solve problems such as unclear suppression methods

Active Publication Date: 2011-04-27
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, according to Patent Document 1, the method of suppressing the decrease in braking force by the anti-lock brake control system when the brake booster fails is unclear.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] In Embodiment 1, the master cylinder pressure sensor 56 is provided in the master cylinder 9 and both the master cylinder pressure control device 3 and the wheel brake cylinder pressure control device 5 are electrically connected to the master cylinder pressure sensor 56. The wiring structure will be described. The master cylinder pressure sensor 56 as master cylinder pressure detection means detects the signal for calculating the master cylinder pressure and outputs the detection result. In other words, the signal voltage is used as the detection result according to the supplied power supply voltage and hydraulic pressure output.

[0057] figure 1 It is a diagram showing the overall configuration of the brake control system. In the figure, dotted lines with arrows are signal lines, and the flow of signals is indicated by the direction of the arrows.

[0058] The brake control system 1 includes a main working cylinder pressure control device 3, a main working cylinde...

Embodiment 2

[0142] In the second embodiment, a configuration in which the mounting position of the master cylinder pressure sensor 56 is mounted on the wheel cylinder pressure control mechanism 6 will be described with respect to the first embodiment.

[0143] Figure 4 It is a diagram showing the overall configuration of the brake control system of the second embodiment. In the figure, dotted lines with arrows are signal lines, and the flow of signals is indicated by the direction of the arrows.

[0144] In the overall structure of the brake control system of the second embodiment, the master cylinder pressure sensor 56 is installed in the wheel cylinder pressure control mechanism 6 .

[0145] 5 shows the relationship between the master cylinder pressure sensor 56 and the wheel cylinder pressure control device 5 when the master cylinder pressure sensor 56 as the master cylinder pressure detection device of the present invention is mounted in the wheel brake pressure control mechanism 6....

Embodiment 3

[0152] In the third embodiment, only the wheel cylinder pressure control device 5 and the master cylinder pressure sensor 56 are electrically connected, and a dedicated circuit breaker is provided between the master cylinder pressure control device 3 and the wheel brake pressure control device 5. Structure of communication lines. That is, since the master cylinder pressure control device 3 electrically connected to the wheel cylinder pressure control device 5 is not directly connected to the master cylinder pressure sensor 56, the master cylinder pressure calculated by the wheel cylinder pressure control device 5 is obtained. .

[0153] Figure 6 An example of the circuit configuration of the master cylinder pressure control device 3 of the third embodiment is shown.

[0154] In Embodiment 3, there is no electrical connection between the master cylinder pressure sensor 56 and the master cylinder pressure control device 3 , and there is no master cylinder pressure sensor I / F ...

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Abstract

Disclosed is a brake control system including a plurality of control apparatuses using a brake operation amount detection apparatus and one brake operation amount detection apparatus. The brake control system includes: a master-cylinder pressure control apparatus that controls a master-cylinder pressure based on a brake operation amount; a wheel-cylinder pressure control apparatus that controls a wheel-cylinder pressure of each wheel; and a master-cylinder pressure detection apparatus that detects a signal for calculating the master-cylinder pressure, the master-cylinder pressure control apparatus controls the master-cylinder pressure based on a detection result detected by the master-cylinder pressure detection apparatus, and the wheel-cylinder pressure control apparatus controls the wheel-cylinder pressure based on the detection result detected by the master-cylinder pressure detection apparatus.

Description

technical field [0001] The invention relates to a brake control system for a vehicle. Background technique [0002] The brake booster is generally a vacuum booster, in which the suction pressure of the internal combustion engine is used. Although there are cases where a vacuum pump is used as a substitute for the suction pressure of the internal combustion engine, in this case, the possibility of failure of the brake booster is higher than before, so anti-lock brakes are used when the brake booster fails It is widely known to suppress a decrease in braking force by controlling a pump of a system (see Patent Document 1). [0003] Patent Document 1: Japanese PCT Publication No. 2001-513041 [0004] However, according to Patent Document 1, the method of suppressing the decrease in braking force by the anti-lock brake control system when the brake booster fails is unclear. Assuming that the pump of the anti-lock brake control system is used to suppress the decrease in braking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/18B60T13/66
CPCB60T7/042B60T8/321B60T2270/414B60T13/142B60T2270/402B60T8/885B60T13/662B60T13/686
Inventor 西野公雄印南敏之松崎则和木川昌之
Owner HITACHI ASTEMO LTD