US 11,858,487 B2
Brake control apparatus and method for detecting abnormality in brake control apparatus
Makoto Kashiwagi, Obihiro (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/055,210
Filed by Hitachi Automotive Systems, Ltd., Hitachinaka (JP)
PCT Filed Apr. 25, 2019, PCT No. PCT/JP2019/017566
§ 371(c)(1), (2) Date Nov. 13, 2020,
PCT Pub. No. WO2019/220910, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 2018-093626 (JP), filed on May 15, 2018.
Prior Publication US 2021/0114577 A1, Apr. 22, 2021
Int. Cl. B60T 17/22 (2006.01); B60Q 9/00 (2006.01); B60T 13/14 (2006.01); B60T 13/68 (2006.01)
CPC B60T 17/221 (2013.01) [B60Q 9/00 (2013.01); B60T 13/142 (2013.01); B60T 13/686 (2013.01); B60T 2270/406 (2013.01); B60T 2270/88 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A brake control apparatus comprising:
a connection fluid passage that connect a master cylinder and a braking force application portion to each other, the braking force application portion being configured to apply a braking force to a wheel according to a brake hydraulic pressure;
a shut-off valve portion provided in the connection fluid passage;
a first pressure sensor configured to detect a hydraulic pressure in a portion of the connection fluid passage that connects the shut-off valve portion and the master cylinder to each other;
a hydraulic pressure source configured to supply brake fluid to a portion of the connection fluid passage that connects the shut-off valve portion and the braking force application portion to each other;
a second pressure sensor configured to detect a hydraulic pressure in the portion of the connection fluid passage that connects the shut-off valve portion and the braking force application portion to each other; and
a control unit configured to determine an abnormality in the first pressure sensor or the second pressure sensor based on a detection value of the first pressure sensor and a detection value of the second pressure sensor after actuating the shut-off valve portion in a valve-opening direction and actuating the hydraulic pressure source.