公开(公告)号：US12012906B2

公开(公告)日：2024-06-18

申请号：US18002728

申请日：2021-05-11

申请人： AISIN CORPORATION ,  Mazda Motor Corporation

发明人： Yoshinari Tokunaga ,  Yuki Kasuya ,  Takano Nakai ,  Kenichiro Suzuki ,  Yoshiyuki Kamoyama ,  Toru Hirota

IPC分类号： F02D13/02 ,  F02D13/08 ,  F02D41/00 ,  F02D41/04

CPC分类号： F02D13/0215 ,  F02D13/0203 ,  F02D13/0223 ,  F02D13/0234 ,  F02D13/0242 ,  F02D13/0249 ,  F02D13/08 ,  F02D41/009 ,  F02D41/042 ,  F02D2041/001

摘要： A stop control device for an internal combustion engine is structured that stops the engine in a state suitable for starting and that does not cause a crank angle to change after the engine is stopped. A four-cycle internal combustion engine includes an electric valve opening and closing timing control device that sets an opening and closing timing of either or both of an intake valve and an exhaust valve. Stop control of stopping the internal combustion engine is performed when a stop signal for stopping the internal combustion engine is acquired, and post-stop phase control of displacing the opening and closing timing of the valve opening and closing timing control device in either an advancing direction or a retarding direction is performed after the internal combustion engine is stopped by the stop control.

公开(公告)号：US11549407B2

公开(公告)日：2023-01-10

申请号：US17715408

申请日：2022-04-07

申请人： AISIN CORPORATION ,  MAZDA MOTOR CORPORATION

发明人： Kenya Fujimoto ,  Yoshinari Tokunaga ,  Shigehiro Tanabe ,  Takano Nakai ,  Yoshiyuki Kamoyama ,  Hiroshi Takahashi ,  Toru Hirota

IPC分类号： F02D13/04 ,  F01L1/352 ,  F01L1/344 ,  F01L1/46

摘要： The valve timing control unit includes a valve timing control mechanism that includes a driving rotary body, a driven rotary body, an electric motor and a deceleration gear each for setting the relative rotational phase of the driving rotary body and the driven rotary body, and a phase sensor unit that detects the actual phase of the driving rotary body and the driven rotary body. The valve timing control unit includes a controller that controls the electric motor to reduce a phase difference between the actual phase and a target phase, and the controller includes a swing controller that swings the target phase in vicinity of the target phase when the target phase is maintained and the actual phase having a fluctuation amount is held in a holding region, in which the fluctuation amount is less than a preset value.

公开(公告)号：US10934947B2

公开(公告)日：2021-03-02

申请号：US16493300

申请日：2018-03-19

申请人： Mazda Motor Corporation

发明人： Takano Nakai ,  Takaya Okugawa ,  Souichirou Chabata ,  Takafumi Nishio

IPC分类号： F02D13/06 ,  F02D17/02 ,  F02M26/14 ,  F02D41/00

摘要： A control device for an engine includes a valve-stopping mechanism 14b which holds intake and exhaust valves 41, 51 of the first and the fourth cylinders (idle cylinders) of four cylinders in closed states, a throttle valve control unit 115, an ignition period control unit 113, and an ECU 110 which controls the valve-stopping mechanism 14b, the throttle valve control unit 115, and the ignition period control unit 113. The ECU 110 sets a retard amount of the ignition period of the idle cylinder behind the basic ignition period at least in starting the all-cylinder operation in accordance with an amount of burned gas existing in the idle cylinder in switching to the all-cylinder operation from the reduced-cylinder operation.

公开(公告)号：US11300016B2

公开(公告)日：2022-04-12

申请号：US17204988

申请日：2021-03-18

申请人： AISIN CORPORATION

发明人： Hiroyuki Amano ,  Shogo Katsuki ,  Takano Nakai ,  Kenichiro Suzuki ,  Yoshiyuki Kamoyama ,  Toru Hirota

IPC分类号： F01L1/344 ,  F02D13/02 ,  F01M9/10 ,  F01L1/047 ,  F01L13/00

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：US11428172B2

公开(公告)日：2022-08-30

申请号：US17203887

申请日：2021-03-17

申请人： AISIN CORPORATION

发明人： Yuki Kasuya ,  Shugo Ito ,  Takano Nakai ,  Kenichiro Suzuki ,  Yoshiyuki Kamoyama ,  Toru Hirota

IPC分类号： F01L1/34 ,  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.