公开(公告)号：US20220325642A1

公开(公告)日：2022-10-13

申请号：US17701202

申请日：2022-03-22

Applicant: AISIN CORPORATION

Inventor： Shuhei SUGIYAMA

IPC: F01L1/352 ,  F01L1/02 ,  F01L1/344 ,  F02D13/02

Abstract: A valve opening and closing timing control device includes a driving-side rotating body, a driven-side rotating body, a stopper configured to determine a mechanical limit of a displacement region of a relative rotation phase, a phase control mechanism configured to change the relative rotation phase, and a control unit configured to control the electric motor so as to displace the actual phase detected by a phase sensor. A limit phase at which the stopper reaches an abutting state is set in advance when rotation of the electric motor is stopped while the internal combustion engine operates. Upon executing stop control of stopping the internal combustion engine, except when the actual phase is already the limit phase, the control unit executes braking control of limiting the rotation of the electric motor by controlling an electric current to be supplied to the electric motor.