Title:
The oil pressure control circuit of a power transmission device
Document Type and Number:
Japanese Patent JP6160592
Kind Code:
B2
Abstract:
A hydraulic control circuit for a drive line includes first and second switching valves and first and second solenoid valves. Each switching valve is alternatively switched by a switching hydraulic pressure to connect any two of three ports. The first port of the first switching valve is connected to a hydraulic actuator. The first port of the second switching valve is connected to the second port of the first switching valve. The first solenoid valve supplies the switching hydraulic pressure to the switching valves. The second solenoid valve regulates a control hydraulic pressure supplied to the hydraulic actuator. Any one of three oil paths is communicated with the hydraulic actuator by supplying the control hydraulic pressure via the third port of the first switching valve or the second or third port of the second switching valve and supplying the switching hydraulic pressure to at least one switching valve.
Inventors:
Seiji Kuwahara
Toshio Sugimura
Takahiko Tsutsumi
Masato Yoshikawa
Kouki Minamikawa
Nakanishi Naoki
Toshio Sugimura
Takahiko Tsutsumi
Masato Yoshikawa
Kouki Minamikawa
Nakanishi Naoki
Application Number:
JP2014217830A
Publication Date:
July 12, 2017
Filing Date:
October 24, 2014
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F15B11/02; F16H61/00; F16H61/12; F16K11/22
Domestic Patent References:
| JP5203028A | ||||
| JP2002340166A |
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda
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