Title:
BRAKE FLUID PRESSURE CONTROL DEVICE FOR VEHICLE
Document Type and Number:
Japanese Patent JP2016193652
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a brake fluid pressure control device for a vehicle capable of precisely estimating a brake fluid pressure at an upper stream side fluid path of a control valve unit, without using a pressure sensor.SOLUTION: A motor 72 is rotated before starting of fluid pressure control, and based on an increase amount of a motor load at the time of pressure reduction just after starting of the fluid pressure control, a brake fluid pressure (master cylinder pressure Pmc) of an upper stream side fluid path 104 is estimated. The motor load at the time of pressure reduction just after starting of the fluid pressure control increases as a brake fluid pressure (master cylinder pressure Pmc) of the upper stream side fluid path 104 which is on a discharge side of the brake fluid of a pump 70 rises. Thus, based on the amount of increase of the motor load, the brake fluid pressure (master cylinder pressure Pmc) of the upper stream side fluid path 104 of a control valve unit 30 can be precisely estimated.SELECTED DRAWING: Figure 1
Inventors:
HANDA TOSHIYUKI
Application Number:
JP2015073778A
Publication Date:
November 17, 2016
Filing Date:
March 31, 2015
Export Citation:
Assignee:
AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO LTD
International Classes:
B60T8/172
Domestic Patent References:
| JP2013060031A | 2013-04-04 | |||
| JPH08268253A | 1996-10-15 | |||
| JP2009096236A | 2009-05-07 | |||
| JP2007083814A | 2007-04-05 | |||
| JP2009023468A | 2009-02-05 | |||
| JP2007076528A | 2007-03-29 | |||
| JPH11334569A | 1999-12-07 |
Attorney, Agent or Firm:
Takehiro Chiba
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