公开(公告)号：US20220220869A1

公开(公告)日：2022-07-14

申请号：US17610367

申请日：2019-06-21

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Takuya CHIKAYAMA ,  Masayuki YOKOYAMA

IPC: F01L1/344 ,  F01L1/356

Abstract: In a valve timing adjustment device, a first arm projection portion that is caught by a terminal hook portion of a spiral spring and urged toward a lock phase side by the spiral spring is installed on a face opposite to the front surface of a plate in a first arm in a case where a rotational phase of a second rotating body with respect to a first rotating body is on a first rotational phase side, and a second arm projection portion that abuts on an outermost peripheral portion of the spiral spring is installed on a face opposite to the front surface of the plate in a second arm in a case where the rotational phase is on the first rotational phase side.

公开(公告)号：US20220003134A1

公开(公告)日：2022-01-06

申请号：US17475591

申请日：2021-09-15

Applicant: DENSO CORPORATION

Inventor： Takahito KAMIYA

IPC: F01L1/352 ,  F01L1/356 ,  F16H1/32

Abstract: A valve timing adjustment device includes a driving-side rotatable body and a driven-side rotatable body. The driving-side rotatable body is configured to be rotated about a rotational axis synchronously with a drive shaft and includes a sprocket portion and a housing portion. The sprocket portion is configured to receive a drive force transmitted from the drive shaft. The housing portion is shaped in a tubular form and is formed separately from the sprocket portion. The driven-side rotatable body is configured to be rotated about the rotational axis synchronously with a driven shaft.

公开(公告)号：US10563544B2

公开(公告)日：2020-02-18

申请号：US15668498

申请日：2017-08-03

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Kyung Mo Kim

IPC: F01L1/053 ,  F01L1/047 ,  F01L13/00 ,  F01L1/18 ,  F01L1/356 ,  F01L1/08 ,  F01L1/26

Abstract: A continuous variable valve duration system may include a camshaft, a first cam portion including a first cam, of which the camshaft is inserted therein, an internal bracket transmitting rotation of the camshaft to the first cam portion, a control shaft parallel to the camshaft, a slider housing in which the internal bracket is rotatably inserted, on which a control groove where the control shaft is inserted into is formed, and the slider housing movable vertical to the camshaft, a guider configured for guiding movement of the slider housing, a rocker shaft, a first rocker arm rotatably disposed to the rocker shaft of which a first end portion contacts with the first cam and of which a second end portion is connected to a first valve and a control portion selectively rotating the control shaft for changing a position of the slider housing.

公开(公告)号：US10533462B2

公开(公告)日：2020-01-14

申请号：US16060027

申请日：2016-12-26

Applicant: MIKUNI CORPORATION

Inventor： Takahiro Ogura ,  Chikara Oikawa

IPC: F01L1/047 ,  F01L1/04 ,  F01L1/356 ,  F01L1/344 ,  F01L1/46

Abstract: A valve timing change device includes: a housing rotor (10); a vane rotor; a fastening bolt (40); and an advance angle oil passage communicating with an advance angle chamber and a delay angle oil passage communicating with a delay angle chamber, via oil passages which are open at intervals on an outer-circumferential surface of the fastening bolt. The vane rotor includes: a rotor body (20) formed of a material having a thermal expansion coefficient greater than that of the fastening bolt; and a rotor sleeve (30) that is formed of a material having a thermal expansion coefficient equal to that of the fastening bolt and is integrally incorporated such that the rotor sleeve does not contact a cam shaft and tightly contacts the outer circumferential surface (41a), in a region in which the advance angle oil passage (23a) and the delay angle oil passage (35) are blocked from each other.

公开(公告)号：US10415485B2

公开(公告)日：2019-09-17

申请号：US15839626

申请日：2017-12-12

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： In Sang Ryu ,  Kyoung Pyo Ha ,  You Sang Son ,  Kiyoung Kwon

IPC: F02D13/02 ,  F02D41/00 ,  F01L13/00 ,  F02D9/02 ,  F01L1/047 ,  F01L1/053 ,  F01L1/356

Abstract: A method for controlling intake and exhaust valves of an engine may include: determining, by a controller, a target opening duration of the intake and exhaust valves according to a control region determined based on an engine load and an engine speed; modifying, by an intake continuous variable valve duration (CVVD) device and by an exhaust CVVD device, opening and closing timings of the intake valve and exhaust valve based on the target opening duration of the valves; and advancing or retarding, by the intake and/or exhaust CVVD devices, the opening timing of the intake and exhaust valves while simultaneously retarding or advancing the closing timing of the intake and exhaust valve by a predetermined value based on the target opening durations. In particular, the controller classifies five control regions based on the engine load and speed.

公开(公告)号：US10352257B2

公开(公告)日：2019-07-16

申请号：US15839596

申请日：2017-12-12

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： In Sang Ryu ,  Kyoung Pyo Ha ,  You Sang Son ,  Kiyoung Kwon

IPC: F02D41/00 ,  F02D13/02 ,  F01L13/00 ,  F01L1/047 ,  F01L1/344 ,  F01L1/34 ,  F01L1/356 ,  F01L1/053 ,  F01L1/26

Abstract: A method for controlling intake and exhaust valves of an engine includes: Controlling opening and closing timings of the intake and exhaust valves by an intake continuous variable valve timing (CVVT) device and an exhaust CVVT devices; determining, by a controller, target intake and exhaust opening durations of the intake and exhaust valves, and target opening and closing timings of the valves based on an engine load and an engine speed; modifying current intake and exhaust opening durations based on the target opening durations via an intake continuous variable valve duration (CVVD) device and an exhaust CVVD device; adjusting opening or closing timings of the valves to the target opening or closing timings of the valves while maintaining the modified opening durations of the valves.

公开(公告)号：US10344634B2

公开(公告)日：2019-07-09

申请号：US15561594

申请日：2016-04-08

Applicant: DENSO CORPORATION

Inventor： Yoshifumi Kishimoto ,  Masatake Sato

IPC: F01L1/356 ,  H02P6/15 ,  B60R16/023 ,  H02P6/08 ,  H02P6/24 ,  F01L1/344 ,  F01L1/053

Abstract: A motor drive device for valve timing control of an internal combustion engine includes: a motor drive unit that controls a phase of a camshaft to drive a motor for controlling opening and closing operation of a valve; and a determination unit that determines whether a timing is to start up the motor or to normally drive the motor. The motor drive unit drives the motor with an advance angle when it is determined that the timing is to normally drive the motor by the determination unit, and the motor drive unit normally drives the motor without the advance angle when it is determined that the timing is to start up the motor.

公开(公告)号：US10260384B2

公开(公告)日：2019-04-16

申请号：US15564874

申请日：2016-04-06

Applicant: DENSO CORPORATION

Inventor： Tetsuro Mitsutani

IPC: F01L1/344 ,  F01L1/356 ,  F01L1/46

Abstract: A valve timing regulation device includes a housing, a vane rotor, a sleeve and a spool. The housing is fit to an end of a camshaft. The sleeve has a supply port, a drain port, a first control port, a second control port and a first drain oil passage. The spool has a connection oil passage provided to a shaft center part to connect the supply port to either the first control port or the second control port according to an own axial position. The drain port is connected to a drain space through a second drain oil passage provided to span the vane rotor and the camshaft. A hydraulic oil of a retard chamber is discharged to the drain space through the second drain oil passage. It is unnecessary to provide a discharge hole to the camshaft, and a shaft length of the camshaft can be shorter.

公开(公告)号：US10202875B2

公开(公告)日：2019-02-12

申请号：US15282374

申请日：2016-09-30

Applicant: Hyundai Motor Company

Inventor： You Sang Son ,  Kyoung Pyo Ha ,  Back Sik Kim

IPC: F01L1/34 ,  F01L1/047 ,  F01L1/053 ,  F01L1/356 ,  F01L13/00

Abstract: The present disclosure provides a powertrain including an engine housing to which a cylinder head and cam carrier are mounted, a camshaft mounted to the cam carrier, first and second cam portions on which cams are formed, in which the camshaft is inserted, of which relative phase angle with respect to the camshaft is variable and disposed corresponding to a first cylinder and second cylinder respectively, first and second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, a slider housing in which the first and second inner brackets are rotatably inserted and of which a position with respect to the cam shaft is variable, a lifter control portion controlling the position of the slider housing, a motor assembly engaged with the engine housing and in which a flywheel connected with a crankshaft is rotatably disposed, and a transmission connected with the motor assembly.

公开(公告)号：US10132209B2

公开(公告)日：2018-11-20

申请号：US15264671

申请日：2016-09-14

Applicant: HYUNDAI MOTOR COMPANY

Inventor： Back Sik Kim ,  Kyoung Pyo Ha ,  You Sang Son

IPC: F01L1/34 ,  F01L1/047 ,  F01L1/053 ,  F01L1/356 ,  F01L13/00 ,  F01L1/344

Abstract: A continuous variable valve duration apparatus may include: a camshaft; first and second cam portions on which a cam is formed respectively, the camshaft being inserted into the first and second cam portions such that relative phase angles with respect to the camshaft are variable; first and second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively; a slider housing in which the first and the second inner brackets are rotatably inserted; first and second guiding portions formed on the slider housing; a cam cap on which a cam cap guide contacting the second guiding portion is formed; a control shaft parallel to the camshaft; a control rod eccentrically formed on the control shaft; a guide head on which a head guiding portion and a head hole are formed; and a control portion selectively rotating the control shaft.