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Braking device for vehicles

A braking device, vehicle technology, applied in the direction of hydraulic braking transmission, brakes, braking components, etc., can solve problems such as failure to detect main system failure, failure to detect, failure to detect failure of the main stop valve, etc.

Active Publication Date: 2016-08-17
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the invention described in Patent Document 1, the failure of the main stop valve cannot be detected unless the brake pedal is depressed, and furthermore, the failure of the main system cannot be detected.
In this way, fault detection cannot be performed without the assistance of the driver

Method used

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  • Braking device for vehicles
  • Braking device for vehicles
  • Braking device for vehicles

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Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Wherein, each figure is a schematic diagram, and the size of the detailed structure is not specified.

[0032] like figure 1 As shown, the vehicle braking device of this embodiment mainly includes a master cylinder 1, a reaction force generating device 2, a separation lock valve 22, a reaction force valve 3, a servo pressure generating device 4, a brake device 5, and a brake ECU 6. And various sensors 72 to 75 capable of communicating with the brake ECU 6 . In addition, in the present embodiment, a known hybrid ECU (not shown) is connected to the brake ECU 6 .

[0033] (master cylinder 1)

[0034] The master cylinder 1 provides brake fluid to the braking device 5 and mainly includes a master cylinder 11 , a housing cylinder 12 , an input piston 13 , a first master piston 14 and a second master piston 15 .

[0035] The master cylinder 11 is a bottomed and substantially...

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Abstract

The present invention provides a vehicle brake device capable of detecting failure of a main system without operating a brake operating member. In the vehicle braking device of the present invention, which drives the master piston (14, 15) to generate master cylinder pressure, it includes: a pressure accumulator (431) for accumulating brake fluid; a servo pressure generating unit (4), which It is configured to be able to generate servo pressure using brake fluid in the pressure accumulator regardless of the operation of the brake operating member; and a system for detecting a brake fluid consumption related value related to the consumption of brake fluid in the pressure accumulator. A dynamic fluid consumption related value detecting unit (73, 74, 75); and a failure detecting unit (6), in a state where the brake operating member is not operated, the main piston is driven only by the servo pressure generated by the servo pressure generating part. Drive, detect failure of the main system based on the brake fluid consumption related value detected by the brake fluid consumption related value detection unit at this time.

Description

technical field [0001] The present invention relates to a vehicle brake device that controls a braking force applied to a vehicle based on a driver's brake operation amount. Background technique [0002] As an example of a vehicle brake device that controls the braking force applied to the vehicle based on the driver's brake control amount, there is known, for example, a vehicle brake device disclosed in Japanese Patent Application Laid-Open No. 2008-87617 (Patent Document 1). Braking device. In this vehicle brake device, the input piston and the pressurizing piston are kept apart at a predetermined interval (stroke), and according to the movement of the input piston, pressure is applied to the brake wheel cylinder based on the accumulator and the linear valve. The braking force generated by the control oil pressure. In the vehicle brake device described in Patent Document 1, a failure of the master cut valve can be detected by depressing the brake pedal. [0003] [Patent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T11/10
CPCB60T8/4077B60T13/147B60T17/221B60T13/145B60T13/58
Inventor 野吕和誉坂田康典铃木良教石田聪
Owner ADVICS CO LTD