Hydraulic pressure control unit
AssigneeRobert Bosch GmbH
InventorsMikiya Kotaka, Yuki Ikeda
Life of this patent
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Abstract
The present invention obtains a hydraulic pressure control unit capable of appropriately detecting abnormality in a hydraulic pressure control unit. In a hydraulic pressure control unit (5) according to the present invention, a controller (52) includes a diagnosis section that executes a diagnostic mode to diagnose presence or absence of abnormality in the hydraulic pressure control mechanism (51) on the basis of a current fluctuation of a motor (35) in a state where a pump (34) is driven by the motor (35).
Claims10
A hydraulic pressure control unit (5, 5A) used for a brake system (10, 10A) of a vehicle (100, 100A), the hydraulic pressure control unit comprising:
- a hydraulic pressure control mechanism (51, 51A) including an inlet valve (31) that is provided to a primary channel (25) communicating a master cylinder (21) and a wheel cylinder (24), an outlet valve (32) that is provided to a secondary channel (26) through which a hydraulic fluid in the wheel cylinder (24) is released to an intermediate portion (25a) of the primary channel (25), a pump (34) that is provided on a downstream side of the outlet valve (32) in the secondary channel (26), and a motor (35) that drives the pump (34);
- and
- a controller (52, 52A) that controls operation of the hydraulic pressure control mechanism (51, 51A), wherein
- the controller (52, 52A) includes a diagnosis section (522b) that executes a diagnostic mode to diagnose presence or absence of abnormality in the hydraulic pressure control mechanism (51, 51A) on the basis of a current fluctuation of the motor (35) in a state where the pump (34) is driven by the motor (35).
Dependencies are inferred from the claim text.