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Patent Searching and Data


Title:
HYDRAULIC CONTROL DEVICE AND HYDRAULIC CONTROL METHOD FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/173906
Kind Code:
A1
Abstract:
The present invention improves fuel consumption and reduces noise during the automatic operation of a vehicle by reducing margin values for the hydraulic pressure supplied to hydraulic control targets and thereby reducing the hydraulic pressure supplied to the hydraulic control targets. A hydraulic control device (1) that is for a vehicle and that controls the line pressure or the working pressure (the hydraulic pressure) supplied to a clutch (40) and a transmission (41) (hydraulic control targets) that are provided to the vehicle. The hydraulic control device (1) comprises a working pressure control unit (10) (a hydraulic pressure setting device) that, on the basis of a predetermined operating plan for automatic operation of the vehicle, sets margin values (α1, α2) for the working pressure (the line pressure) supplied to hydraulic circuits (31, 31) for the clutch (40) and the transmission (41).

Inventors:
MATSUOKA Takashi (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
SEIMIYA Masashi (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2018/010152
Publication Date:
September 27, 2018
Filing Date:
March 15, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F16H61/00; B60W10/00; B60W10/02; B60W10/06; B60W10/10; B60W10/30; B60W30/00; F16H59/02; F16H59/14; F16H63/50
Attorney, Agent or Firm:
TODA Yuji (6-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 20, 〒1008220, JP)
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