公开(公告)号：US11820305B2

公开(公告)日：2023-11-21

申请号：US17756861

申请日：2020-10-13

申请人： KYB Corporation

发明人： Tsuyoshi Hironaka ,  Midori Nagashima ,  Ken Tsukui ,  Kazuya Murota

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

CPC分类号： B60R16/08 ,  F15B11/17 ,  F16H61/66

摘要： 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

申请人： KYB Corporation

发明人： Tsuyoshi Hironaka ,  Midori Nagashima ,  Ken Tsukui ,  Kazuya Murota

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

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

摘要： 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.