Title:
PARKING BRAKE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/261413
Kind Code:
A1
Abstract:
Provided is a parking brake control device that reduces discomfort to passengers even when a parking switch is operated and braking is performed. The parking brake control device (a control unit 100) controls both of a hydraulic unit (10) for performing braking of wheels (3) by means of hydraulic pressure and a parking brake device (200) whereby power from an electric motor (210) is mechanically transmitted to the wheels (3) and braking is performed. The parking brake control device comprises: a hydraulic braking unit (150) capable of executing hydraulic braking control in which braking of the wheels (3) is performed by the hydraulic unit (10) on the condition that a signal from an activation switch (a parking switch 92) for activating the parking brake device (200) is input during vehicle travel; and a pressure reduction rate setting unit (153) that sets a pressure reduction rate (R) in accordance with an end condition of the hydraulic braking control satisfied at the end of the hydraulic braking control when pressure reduction control is performed at the end of the hydraulic braking control.
Inventors:
TSUCHIDA TAKERU (JP)
TAKAHASHI MARI (JP)
TAKAHASHI MARI (JP)
Application Number:
PCT/JP2021/023295
Publication Date:
December 30, 2021
Filing Date:
June 21, 2021
Export Citation:
Assignee:
HITACHI ASTEMO UEDA LTD (JP)
International Classes:
B60T7/12; B60T13/74; B60T17/18
Foreign References:
| JP2018135040A | 2018-08-30 | |||
| JP2019189109A | 2019-10-31 | |||
| JP2008143271A | 2008-06-26 | |||
| JP2015101976A | 2015-06-04 | |||
| JP2011213205A | 2011-10-27 | |||
| JPH1076931A | 1998-03-24 |
Other References:
See also references of EP 4173903A4
Attorney, Agent or Firm:
OGAWA Keisuke et al. (JP)
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