公开(公告)号：US20220003132A1

公开(公告)日：2022-01-06

申请号：US17204988

申请日：2021-03-18

申请人： AISIN SEIKI KABUSHIKI KAISHA

发明人： Hiroyuki AMANO ,  Shogo KATSUKI ,  Takano NAKAI ,  Kenichiro SUZUKI ,  Yoshiyuki KAMOYAMA ,  Toru HIROTA

IPC分类号： F01L1/344 ,  F02D13/02 ,  F01L1/047 ,  F01M9/10

摘要： A valve opening and closing timing control device includes a drive-side rotating body that rotates synchronously with a crankshaft of an internal combustion engine, a driven-side rotating body that rotates with a camshaft of the internal combustion engine, an electric motor that controls a relative rotation phase of the drive-side rotating body and the driven-side rotating body, a motor control unit that controls a current supplied to the electric motor, a current sensor that detects the current flowing into the electric motor, a regulation unit that determines a regulation phase in which the relative rotation phase is mechanically limited in an advanced angle direction and in a delayed angle direction, and a regulation phase detection unit that detects the regulation phase based on when the relative rotation phase in which a change is stopped by the regulation unit is reached and a current value detected by the current sensor increases.

公开(公告)号：US20220003174A1

公开(公告)日：2022-01-06

申请号：US17203887

申请日：2021-03-17

申请人： AISIN SEIKI KABUSHIKI KAISHA

发明人： Yuki KASUYA ,  Shugo ITO ,  Takano NAKAI ,  Kenichiro SUZUKI ,  Yoshiyuki KAMOYAMA ,  Toru HIROTA

IPC分类号： F02D13/02 ,  F01L9/22 ,  F01L1/344

摘要： A valve opening and closing timing control device includes: a driving-side rotating body that rotates synchronously with a crankshaft of an internal combustion engine around a rotating shaft core; a driven-side rotating body that rotates integrally with a valve opening and closing camshaft of the internal combustion engine around the same shaft core as the rotating shaft core; a gear mechanism that sets a relative rotation phase between the driving-side rotating body and the driven-side rotating body by displacement of a meshing position; a motor that enables displacement of the meshing position of the gear mechanism by rotating a rotating shaft; and a control unit that controls the drive of the motor. The control unit intermittently performs control to energize the motor for one phase for a predetermined time after the internal combustion engine is stopped.

公开(公告)号：US20220003133A1

公开(公告)日：2022-01-06

申请号：US17205588

申请日：2021-03-18

申请人： AISIN SEIKI KABUSHIKI KAISHA

发明人： Takashi IWAYA ,  Masahiro OKADO ,  Toi SUZUKI ,  Toshiki MIYAKE ,  Takano NAKAI ,  Kenichiro SUZUKI ,  Yoshiyuki KAMOYAMA ,  Toru HIROTA

IPC分类号： F01L1/344

摘要： A valve open-close timing control device includes a driving rotator, a driven rotator, a phase adjusting mechanism, a sensor unit, a storage configured to store the plurality of divided regions consecutively provided, as a plurality of divided length information pieces corresponding to divided lengths of the divided regions, and an actual phase acquisition unit configured to start acquisition of the crank angle signal and the cam angle signal along with start of actuation control of actuating the internal combustion engine, specify one of the divided regions by referring to the divided length information pieces stored in the storage in accordance with the crank angle signal at timing set in accordance with the cam angle signal, and acquire the relative rotation phase as an actual phase in accordance with the crank angle signal corresponding to the boundary of the divided region thus specified and the reference crank angle signal.