公开(公告)号：US12018622B2

公开(公告)日：2024-06-25

申请号：US18011977

申请日：2021-06-23

Applicant: Hitachi Astemo, Ltd.

Inventor： Yuta Koike ,  Masayuki Saruwatari ,  Yuusuke Kihara ,  Akihiro Komori

IPC: F02D13/02 ,  F01L1/352 ,  F01L1/356 ,  F02D13/08

CPC classification number: F02D13/0238 ,  F01L1/352 ,  F01L1/356 ,  F02D13/02 ,  F02D13/08 ,  F01L2800/01 ,  F01L2800/03 ,  F01L2820/032

Abstract: An object of the present invention is to obtain a controller device for a variable valve timing apparatus capable of controlling a phase to an arbitrary fixed valve timing from immediately before an internal combustion engine stops until after the internal combustion engine has stopped. The controller device for the variable valve timing apparatus according to the present invention performs, during engine stop processing of the internal combustion engine, normal control of changing the relative rotational phase of a camshaft to a most advanced position or a most retarded position when the rotational speed of a crankshaft is equal to or more than a first threshold, and low-speed control of fixing a current or a voltage supplied to the motor to be constant to maintain the relative rotational phase of the camshaft at the most advanced position or the most retarded position in a period from when the rotational speed of the crankshaft is lower than the first threshold until the rotational speed becomes zero.

公开(公告)号：US20230090525A1

公开(公告)日：2023-03-23

申请号：US17477756

申请日：2021-09-17

Applicant: BorgWarner Inc.

Inventor： Chad M. McCloy ,  David C. White ,  Shawn Blackmur ,  Timothy W. Kunz ,  Brian T. Kenyon

IPC: F01L1/356 ,  F01L1/047

Abstract: A variable camshaft timing (VCT) system includes an independent camshaft phaser, receiving input from a crankshaft of an internal combustion engine, having an output coupled to one of an inner concentric camshaft or an outer concentric camshaft; and a dependent camshaft phaser, coupled to the other of the inner concentric camshaft or the outer concentric camshaft, comprising a half-Oldham link configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in one radial direction and at least one pivotable arm configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in another, different radial direction.

公开(公告)号：US10914204B2

公开(公告)日：2021-02-09

申请号：US16502361

申请日：2019-07-03

Applicant: DENSO CORPORATION

Inventor： Tetsuro Mitsutani

IPC: F01L1/34 ,  F01L1/344 ,  F01L1/356 ,  F15B11/10 ,  F15B13/04 ,  F15B15/12 ,  F16K11/07 ,  F16K31/06

Abstract: A sleeve includes: a supply port communicated with a hydraulic oil supply source; a primary control port communicated with a retard chamber, a secondary control port communicated with an advance chamber; and a drain port communicated with an outside of a valve timing adjustment device. A spool includes: a pressure accumulation space formed at an inside of the spool; a supply passage configured to connect between the pressure accumulation space and the supply port; a primary control passage configured to connect between the pressure accumulation space and the primary control port; a secondary control passage configured to connect between the pressure accumulation space and the secondary control port; and a recycle passage configured to connect between the primary control port or the secondary control port and the pressure accumulation space. The recycle passage and the drain port are connected with each other at the inside of the sleeve.

公开(公告)号：US10655507B2

公开(公告)日：2020-05-19

申请号：US16332925

申请日：2017-12-15

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Hirokazu Shimizu

IPC: F01L1/34 ,  F01L1/344 ,  F02D41/00 ,  F02D43/04 ,  F16H35/00 ,  F02D13/02 ,  F02D41/06 ,  F01L1/356 ,  F02D41/22

Abstract: In a control device and a control method for an internal combustion engine according to the present invention, when a crank angle signal is behaving abnormally, a phase angle of an exhaust camshaft relative to a crankshaft is set to a reference phase angle, and a phase angle of an intake camshaft relative to the crankshaft is determined based on an intake cam signal and an exhaust cam signal. Furthermore, the phase difference between the exhaust cam signal generated when the relative phase angle of the exhaust camshaft is set to the reference phase angle and the intake cam signal generated when the relative phase angle of the intake camshaft is set to a target value is greater after a start-up of the internal combustion engine than during the start-up.

公开(公告)号：US10584648B2

公开(公告)日：2020-03-10

申请号：US16332414

申请日：2018-01-19

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Kentaro Mikawa ,  Nobuhiko Matsuo ,  Naoki Okamoto

IPC: F02D13/02 ,  F01L1/352 ,  F01L1/356 ,  F01L1/344

Abstract: In a control device and a control method for a variable valve timing mechanism according to the present invention, the rotational phase of a camshaft is measured based on the cam angle signal and crank angle signal upon receiving each pulse of the cam angle signal, and the rotational phase change over time within a period of the cam angle signal is measured based on the motor angle signal. It is decided whether the cam angle signal and/or crank angle signal has a prescribed pulse pattern at a diagnostic timing that comes after the last pulse of the cam angle signal. When this decision result is positive, it is then decided whether the motor angle sensor operates normally or abnormally based on the rotational phase and the amount of rotational phase change that are measured when the last pulse of the cam angle signal is received before the diagnostic timing.

公开(公告)号：US10563551B2

公开(公告)日：2020-02-18

申请号：US15806534

申请日：2017-11-08

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： You Sang Son ,  Ingee Suh ,  Kiyoung Kwon ,  In Sang Ryu ,  Kyoung Pyo Ha ,  Dongheon Park ,  Wootae Kim ,  Back Sik Kim ,  Seung Jae Lee

IPC: F01L1/34 ,  F01L13/00 ,  F01L1/356 ,  F01L1/26 ,  F01L1/047

Abstract: A continuous variable valve duration apparatus may include a camshaft, a cam unit on which a cam is formed, of which the camshaft is inserted thereto and of which a relative phase angle with respect to the camshaft is variable, an inner bracket transmitting rotation of the camshaft to the cam unit, a wheel housing in which the inner bracket is rotatably inserted, on which a guide groove parallel to the camshaft is formed, and on which a guide hole vertical to the camshaft is formed, a guide portion including a guide shaft inserted into the guide hole for guiding movement of the wheel housing and a control portion including a control shaft disposed parallel to the camshaft and inserted into the guide groove, and the control portion selectively rotating the control shaft for the relative position of the wheel housing with respect to the camshaft to be changed.

公开(公告)号：US10473007B2

公开(公告)日：2019-11-12

申请号：US15760141

申请日：2017-02-07

Applicant: MAZDA MOTOR CORPORATION

Inventor： Masanori Hashimoto

IPC: F01M1/16 ,  F01L1/356 ,  F02D17/02 ,  F01L25/02 ,  F01M1/02 ,  F01L1/24 ,  F01L1/344 ,  F01L13/00 ,  F02D41/00 ,  F02D13/06 ,  F01L1/053 ,  F01L1/18 ,  F01L1/46

Abstract: An oil supply control device includes: a memory which stores first master data constituted by predetermined control value; a hydraulic controller which outputs the control value to an adjusting device to cause a hydraulic pressure to coincide with a target hydraulic pressure; and a determination portion which determines whether or not a first difference between an output control value and the control value of the first master data lies within a predetermined allowable range, wherein the hydraulic controller starts to control the adjusting device with use of the control value of the first master data, when the first difference lies within the allowable range, and starts to control the adjusting device with use of the control value of second master data, when the first difference does not lie within the allowable range, the control value of the second master data causing the first difference to lie within the allowable range.

公开(公告)号：US20190153910A1

公开(公告)日：2019-05-23

申请号：US15571451

申请日：2016-06-13

Applicant: AISIN SEIKI KABUSHIKI KAISHA

Inventor： Takeo ASAHI ,  Yuji NOGUCHI ,  Masaki KOBAYASHI ,  Yoshiaki YAMAKAWA ,  Hiromitsu SHIGYO

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

Abstract: A valve opening/closing timing control device is configured to implement controlling of a relative rotation phase and controlling of a lock mechanism by means of a small control valve. The valve opening/closing timing control device includes a first valve whose position is switched electromagnetically and a second valve whose position is switched by a fluid pressure controlled by the first valve. The second valve is constituted of at least one of a phase control valve that controls the relative rotation phase by providing an advance chamber or a retard chamber with an operating fluid from a fluid pressure pump and a lock control valve that controls a lock state of the lock mechanism by controlling the operating fluid from the fluid pressure pump.

公开(公告)号：US20180363512A1

公开(公告)日：2018-12-20

申请号：US16060027

申请日：2016-12-26

Applicant: MIKUNI CORPORATION

Inventor： Takahiro OGURA ,  Chikara OIKAWA

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

CPC classification number: F01L1/047 ,  F01L1/04 ,  F01L1/3442 ,  F01L1/356 ,  F01L1/46 ,  F01L2001/0471 ,  F01L2001/34426 ,  F01L2001/3443 ,  F01L2001/34433 ,  F01L2001/34453 ,  F01L2001/34479 ,  F01L2001/34483 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2250/02

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：US10156166B2

公开(公告)日：2018-12-18

申请号：US15336135

申请日：2016-10-27

Applicant: HYUNDAI MOTOR COMPANY

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

IPC: F01L1/34 ,  F01M1/16 ,  F01M9/10 ,  F02B75/02 ,  F01L31/00 ,  F01L1/356 ,  F01L13/00 ,  F02B75/18 ,  F01M1/06 ,  F01L1/047 ,  F01L1/053

Abstract: The present disclosure provides an engine with an oil supply system including a cam carrier in which a camshaft support hole is formed and in which an oil supply hole is formed to the camshaft support hole; a camshaft in which a camshaft oil line is formed, in which an inlet supplying oil from the cam carrier oil supply hole is formed and in which a first camshaft bifurcated line is formed; first and second cam portions on which cams are formed, of which the camshaft is inserted thereto, of which relative phase angles with respect to the camshaft are variable, disposed corresponding to a first and a second cylinders, and the first and second cam portions in which a cam portion oil line in fluid communication with first camshaft bifurcated line is formed.