公开(公告)号：US20230313847A1

公开(公告)日：2023-10-05

申请号：US18327424

申请日：2023-06-01

Applicant: DENSO CORPORATION

Inventor： Akira TAKAGI ,  Takumi SUGIURA ,  Masashi NAKAGAWA

IPC: F16D28/00 ,  F16D48/06 ,  H02K7/108 ,  H02K7/116

CPC classification number: F16D28/00 ,  F16D48/064 ,  H02K7/108 ,  H02K7/116 ,  F16D2127/02

Abstract: A first drive cam groove extends from a drive cam specific position to one side in a circumferential direction. A second drive cam groove extends from the drive cam specific position to the other side in the circumferential direction, and an inclination angle of a groove bottom with respect to one end surface of the drive cam main body is larger than that of the first drive cam groove. A first driven cam groove extends from a driven cam specific position to one side in a circumferential direction. A second driven cam groove extends from the driven cam specific position to the other side in the circumferential direction, and an inclination angle of a groove bottom with respect to one end surface of the driven cam main body is larger than that of the first driven cam groove.

公开(公告)号：US20230220889A1

公开(公告)日：2023-07-13

申请号：US18180413

申请日：2023-03-08

Applicant: DENSO CORPORATION

Inventor： Masashi NAKAGAWA

IPC: F16D48/06

CPC classification number: F16D48/06 ,  F16D13/52

Abstract: A control device controls a torque transmission device. The torque transmission device includes an actuator that operates by being energized and a torque transmission portion that is switched to a transmission state or a non-transmission state by the actuator operating, and transmits a torque between a first transmission portion and a second transmission portion when the torque transmission portion is in the transmission state. The control device includes a target calculation unit, a mode determination unit, and a control unit. The target calculation unit calculates a target transmission torque that is a torque to be transmitted between the first transmission portion and the second transmission portion. The mode determination unit determines an operating mode among an engagement mode, a release mode, and a steady mode. The control unit controls the actuator based on the operating mode determined by the mode determination unit.

公开(公告)号：US20170114920A1

公开(公告)日：2017-04-27

申请号：US15268771

申请日：2016-09-19

Applicant: DENSO CORPORATION

Inventor： Hiroshi YORITA ,  Takanobu KAWANO ,  Masashi NAKAGAWA

IPC: F16K31/06 ,  F16K11/07

CPC classification number: F16K31/0675 ,  F16H61/00 ,  F16H61/0251 ,  F16K31/0668 ,  G05D16/00 ,  G05D16/2013

Abstract: A control circuit includes a computing unit, which computes a target oil pressure, a duty output unit, which outputs a drive electric current based on a result of computation of the computing unit, and a dither output unit, which applies a dither signal to a linear solenoid. The dither signal is added to the drive electric current outputted from the duty output unit and is applied to the linear solenoid. The dither output unit always applies the dither signal to the linear solenoid throughout an operation. The dither output unit reduces a pulse height of the dither signal in a dead zone in comparison to a pulse height of the dither signal in a control zone. In this way, even when an axial position of a spool is changed between the control zone and the dead zone, the amplitude of dither of the spool can be made generally constant. Thereby, it is possible to limit a change in an output oil pressure.

公开(公告)号：US20230213073A1

公开(公告)日：2023-07-06

申请号：US18182126

申请日：2023-03-10

Applicant: DENSO CORPORATION

Inventor： Masashi NAKAGAWA

IPC: F16D48/06

CPC classification number: F16D48/06 ,  F16D13/52 ,  F16D2500/1023 ,  F16D2500/3166

Abstract: A control device controls a torque transmission device. The torque transmission device includes an actuator that operates by being energized and a torque transmission portion that is switched to a transmission state or a non-transmission state by the actuator operating, and transmits a torque between a first transmission portion and a second transmission portion when the torque transmission portion is in the transmission state. The control device includes a target calculation unit, a mode determination unit, and a control unit. The target calculation unit calculates a target transmission torque that is a torque to be transmitted between the first transmission portion and the second transmission portion. The mode determination unit determines an operating mode among an engagement mode, a release mode, and a steady mode. The control unit controls the actuator based on the operating mode determined by the mode determination unit.

公开(公告)号：US20200208739A1

公开(公告)日：2020-07-02

申请号：US16812616

申请日：2020-03-09

Applicant: DENSO CORPORATION

Inventor： Masashi NAKAGAWA ,  Fuminori SUZUKI ,  Kengo TAKEI

IPC: F16H61/02 ,  G01R19/00

Abstract: A current control device brings, after a target current has been changed to an upper side, a solenoid into a full-on state at a first timing that arrives in a predetermined control transition cycle shorter than an on-off cycle, determines whether an excitation current has become equal to or larger than a full-on threshold larger than the target current, brings the solenoid into a full-off state at a first timing that arrives in a predetermined energization switching cycle shorter than the on-off cycle after the excitation current has become equal to or larger than the full-on threshold, determines whether the excitation current has become equal to or smaller than a full-off threshold smaller than the target current, and causes a transition to a steady control at a first timing that arrives in the control transition cycle after the excitation current has become equal to or smaller than the full-off threshold.