公开(公告)号：US20220332302A1

公开(公告)日：2022-10-20

申请号：US17641227

申请日：2020-11-25

Applicant: Hitachi Astemo, Ltd.

Inventor： Asahi WATANABE ,  Toshiya OOSAWA ,  Daisuke NEZU

IPC: B60T13/68 ,  B60T8/1755 ,  B60T8/40 ,  B60T13/14

Abstract: When another pump is actuated while a pump is de-actuated, a pressure adjustment valve is brought into a valve-opened state after a shut-off valve is actuated in a valve-opening direction and the another pump is actuated.

公开(公告)号：US20220324430A1

公开(公告)日：2022-10-13

申请号：US17618226

申请日：2020-05-28

Applicant: Hitachi Astemo, Ltd.

Inventor： Asahi WATANABE ,  Toshiya OOSAWA

IPC: B60T17/22 ,  B60T11/26

Abstract: A second control unit controls a pump of a P system and a pump of an S system according to a stroke of a brake pedal that is detected by a stroke sensor in a state that a fluid level of brake fluid in a reservoir tank falls below a predetermined fluid surface level.