公开(公告)号：US11820305B2

公开(公告)日：2023-11-21

申请号：US17756861

申请日：2020-10-13

Applicant: KYB Corporation

Inventor： Tsuyoshi Hironaka ,  Midori Nagashima ,  Ken Tsukui ,  Kazuya Murota

IPC: F15B11/17 ,  B60R16/08 ,  F16H61/66

CPC classification number: B60R16/08 ,  F15B11/17 ,  F16H61/66

Abstract: A working fluid supply system is provided with: a first oil pump and a second oil pump driven by an engine; a switching valve configured to cause a discharge passage of the second oil pump to communicate with at least one of a supply passage and a first drain passage; and a controller configured to switch the switching valve. The controller is configured to switch the switching valve by spending a switching time that is set in accordance with a degree of pressure variation predicted to be caused in the supply passage when the switching valve is switched instantaneously.

公开(公告)号：US12038001B2

公开(公告)日：2024-07-16

申请号：US17755763

申请日：2020-10-13

Applicant: KYB Corporation

Inventor： Tsuyoshi Hironaka ,  Midori Nagashima ,  Ken Tsukui ,  Kazuya Murota

IPC: F04C14/02 ,  F16H57/04 ,  F15B13/00 ,  F15B21/00 ,  F16H61/00

CPC classification number: F04C14/02 ,  F16H57/0439 ,  F15B13/00 ,  F15B21/001 ,  F16H57/0435 ,  F16H57/0441 ,  F16H61/0031

Abstract: A working-fluid supply system includes: a first pump and a second pump driven by an engine; a first switching valve capable of switching a supply target of the second pump to either one of the discharge side and the suction side of the first pump; a first switching control unit configured to perform a switching control of the first switching valve; and a first pressure control unit configured to perform a control such that pressure on the suction side of the first pump becomes a predetermined first pressure when the first switching valve is switched such that the supply target of the second pump becomes the suction side of the first pump.

公开(公告)号：US09856992B2

公开(公告)日：2018-01-02

申请号：US15126013

申请日：2015-06-23

Applicant: KYB Corporation

Inventor： Tsuyoshi Hironaka

IPC: F16K31/06 ,  H01F7/16

CPC classification number: F16K31/06 ,  F16K31/0668 ,  H01F7/16

Abstract: A solenoid valve includes a housing having a cylindrical shape and having a valve path, a spool adjusting an opening degree of the valve path, a coil producing a magnetic force when a current passes therethrough, a first and a second stator core excited by the magnetic force of the coil, a shaft configured to be movable along axial direction together with the spool, a plunger fixed to the shaft and moving in the axial direction by adsorption force acting between itself and the first stator core by the magnetic force of the coil, and a coil spring biasing the spool against the adsorption force acting on the plunger. A spring constant of the coil spring increases as the adsorption force increases by the movement of the plunger.

公开(公告)号：US10139004B2

公开(公告)日：2018-11-27

申请号：US15508713

申请日：2015-08-24

Applicant: KYB Corporation

Inventor： Tsuyoshi Hironaka

IPC: F16K49/00 ,  F16K31/06 ,  F16K27/04 ,  F16K27/08 ,  F16K11/07 ,  H01F7/16

Abstract: A solenoid valve includes a housing having a valve passage; a spool configured to switch between an open and closed state of the valve passage; a coil part configured to generate magnetic force when electric current flows therethrough; a yoke surrounding the coil part; a fluid passage provided on an outer side of the coil part, through which the working fluid passes; an introduction passage communicating with the fluid passage to guide the working fluid inside the housing to the fluid passage; and a discharge passage communicating with the fluid passage to discharge the working fluid passed through the fluid passage outside the yoke.

公开(公告)号：US10132421B2

公开(公告)日：2018-11-20

申请号：US15508649

申请日：2015-08-24

Applicant: KYB Corporation

Inventor： Tsuyoshi Hironaka

IPC: F16K31/06 ,  F16K3/24 ,  H01F7/128 ,  H01F7/16 ,  F16K27/04

Abstract: A solenoid includes a coil configured to generate magnetic force when a current flows therethrough; a stator core provided inside the coil, the stator core being configured to be excited by the magnetic force of the coil; a plunger received in a plunger chamber formed inside the stator core, the plunger being configured to move toward an attraction part in the plunger chamber by the magnetic force of the coil; a shaft provided to be able to move, together with the plunger, along axial direction; and a filter provided inside the stator core. The filter is provided on a side of the attraction part from the plunger and in an axial range where the coil is provided.