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    FLOW RATE CONTROL VALVE AND COOLING SYSTEM
    2.
    发明申请
    FLOW RATE CONTROL VALVE AND COOLING SYSTEM 审中-公开

    公开(公告)号：US20190072191A1

    公开(公告)日：2019-03-07

    申请号：US16084684

    申请日：2017-02-17

    申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

    发明人： Zhenyu SHEN ,  Hideaki NAKAMURA

    IPC分类号： F16K5/04 ,  F16K11/076 ,  F16K27/06 ,  F16K11/085

    摘要： Provided is a flow rate control valve capable of reducing a torque when a valve body in a housing is rotationally driven. A flow rate control valve includes a seal member configured to prevent or reduce a leak of fluid from a main communication hole or a main opening portion into a space portion. A valve body configured to be rotationally driven by a drive mechanism establishes communication between a first auxiliary communication hole and a first auxiliary opening portion regardless of a rotational position of the valve body, and also changes a communication state between the main communication hole and the main opening portion and a communication state between a second auxiliary communication hole and a second auxiliary opening portion according to the rotational position of the valve body. A pressure drop is caused, due to a space portion, on the fluid leaked out into the second auxiliary communication hole via the space portion formed between an inner peripheral surface of a valve body containing portion and an outer peripheral surface of the valve body. An amount of the fluid leaked out into the second auxiliary communication hole is set according to an allowable amount for an apparatus to which the main communication hole is connected, with the main communication hole and the main opening portion in communication with each other and the second auxiliary communication hole and the second auxiliary opening portion out of communication with each other.

    FLOW CONTROL VALVE
    3.
    发明申请
    FLOW CONTROL VALVE 审中-公开

    公开(公告)号：US20180313457A1

    公开(公告)日：2018-11-01

    申请号：US15954807

    申请日：2018-04-17

    申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

    发明人： Zhenyu SHEN ,  Shigo MURAKAMI ,  Hideaki NAKAMURA

    IPC分类号： F16K27/06 ,  F01P7/14 ,  F01P3/20 ,  F16K11/085

    CPC分类号： F16K27/065 ,  F01P3/20 ,  F01P7/14 ,  F01P2007/146 ,  F01P2060/18 ,  F16K11/0856 ,  F16K31/043

    摘要： Provided is a flow control valve which improves a mounting efficiency. An MCV8 includes a housing including a valve-element housing portion, a first communicating aperture which introduces cooling water, which is flown out of a first water channel formed in an engine, to a valve-element housing portion, and a second communicating aperture which discharges the cooling water in the valve-element housing portion to a second water channel formed in the engine; a rotor accommodated in the valve-element housing portion and configured to change a flow rate of the cooling water discharged to the second water channel, according to a rotation angle of the rotor; and a drive mechanism configured to control the rotation angle of the rotor. The first and second communicating apertures open in an engine-side mounting surface of the housing.

    ROTARY CONTROL VALVE
    5.
    发明申请
    ROTARY CONTROL VALVE 有权

    公开(公告)号：US20210010604A1

    公开(公告)日：2021-01-14

    申请号：US16500779

    申请日：2018-04-05

    申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

    发明人： Shingo MURAKAMI ,  Hideaki NAKAMURA

    IPC分类号： F16K11/085 ,  F01P7/16

    摘要： A rotary control valve includes: a rotor including a tubular part and an opening in the tubular part; a seal member including a contact face, an internal passage, a noncontact part, and a ridge; a biasing member structured to cause the contact face of the seal member to be pressed on the tubular part; and a drive mechanism structured to rotate the rotor. The contact face is structured to be in sliding contact with the tubular part, and has an arc-curved surface shaped to fit with an outer periphery of the tubular part. The internal passage is structured to communicate with the opening of the tubular part. The noncontact part is formed at least one of ends of the arc-curved surface in a rotational direction of the tubular part, and is structured to be out of contact with the tubular part so as to define the ridge.