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公开(公告)号：US20190061767A1
公开(公告)日：2019-02-28
申请号：US16080110
申请日：2017-02-24
Applicant: AISIN AW CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Munenori TERADA , Takemichi ISONO , Makoto SAWADA , Naoto TANAKA
Abstract: A control device that controls a vehicle transmission device including an input drivingly coupled to an internal combustion engine, an output drivingly coupled to wheels, a shift input drivingly coupled to the input via a fluid coupling having a lock-up clutch, and a speed change mechanism disposed on a power transmission path connecting the shift input and the output, wherein the speed change mechanism is capable of performing both continuously variable shifting that continuously changes a speed ratio, and stepped shifting that changes a speed ratio in a stepwise manner, the control device including: an electronic control unit that is configured to perform, when the stepped shifting is performed, rotation maintained engagement control that controls an engagement pressure of the lock-up clutch such that a rotational speed of the input follows a predetermined target rotational speed, regardless of a change in rotational speed of the shift input.
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公开(公告)号：US20180328422A1
公开(公告)日：2018-11-15
申请号：US15974742
申请日：2018-05-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yusuke OHGATA , Hiroki KONDO , Makoto SAWADA , Shinya TOYODA , Shuji MORIYAMA , Kyohei SUZUMURA , Hiroki TAKEDA
IPC: F16D48/10
CPC classification number: F16D48/10 , F16D48/062 , F16D2048/0257 , F16H37/022 , F16H61/0276 , F16H2059/704 , F16H2061/1236 , F16H2061/661 , F16H2200/2041
Abstract: A control device of a vehicle power transmission device including a first power transmission path transmitting power by engaging a first clutch, a sub-clutch and a second power transmission path transmitting power by engaging a second clutch each disposed between an engine and drive wheels and parallel to each other, the device including a fail-safe valve for preventing simultaneous engagement of the first and second clutches, the fail-safe valve configured to be switched to a fail-safe spool position preventing simultaneous engagement of the first and second clutches by a hydraulic pressure of a hydraulic fluid supplied to the first clutch or an output pressure of a first electromagnetic valve controlling the hydraulic pressure and the hydraulic pressure of the hydraulic fluid supplied to the second clutch or an output pressure of a second electromagnetic valve controlling the hydraulic pressure, the second electromagnetic valve configured to increase the output pressure.
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公开(公告)号：US20130080008A1
公开(公告)日：2013-03-28
申请号：US13627324
申请日：2012-09-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Naoto TANAKA , Shinya TOYODA , Makoto SAWADA , Yasunari MATSUI
IPC: F16H61/12
CPC classification number: F16H61/12 , F16H61/66272 , F16H2059/683 , F16H2061/1208 , F16H2061/1268 , F16H2061/1284
Abstract: A control device of a vehicle continuously variable transmission, includes a pair of variable pulleys consisting of an input-side variable pulley and an output-side variable pulley whose effective diameters are variable; a transmission belt wound around the pair of variable pulleys; an electromagnetic valve that controls an oil pressure fed to prevent a slip of the transmission belt; and an oil pressure sensor that detects the oil pressure controlled by the electromagnetic valve, wherein a sensor failure determination for determining whether a failure occurs in the oil pressure sensor is executed after execution of an electronic valve failure determination for determining whether a failure occurs in the electromagnetic valve.
Abstract translation: 车辆无级变速器的控制装置包括一对可变皮带轮，其包括有效直径可变的输入侧可变滑轮和输出侧可变滑轮; 缠绕在该对可变皮带轮周围的传动皮带; 电磁阀，其控制供给的油压以防止所述传动带的滑动; 以及油压传感器，其检测由所述电磁阀控制的油压，其中，在执行用于确定在所述油压传感器中是否发生故障的电子阀故障判定之后，执行用于确定所述油压传感器中是否发生故障的传感器故障判定 电磁阀。
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公开(公告)号：US20200055519A1
公开(公告)日：2020-02-20
申请号：US16468852
申请日：2017-11-14
Applicant: AISIN AW CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Eiji MORIYAMA , Kiyoshi KURITA , Kazuharu ASAI , Munenori TERADA , Makoto SAWADA , Shinya TOYODA
Abstract: A control device that includes an electronic control unit that is configured to perform lock-up engagement pressure control for acceleration upon acceleration of a vehicle where vehicle speed is increased by increasing a rotational speed of the internal combustion engine, the lock-up engagement pressure control for acceleration controlling engagement pressure of the lock-up clutch, wherein in the lock-up engagement pressure control for acceleration, when an actual rotational speed of the input has reached greater than or equal to a reference rotational speed, the electronic control unit is configured to start engagement pressure increase control, the reference rotational speed being lower than a target rotational speed of the internal combustion engine, and the engagement pressure increase control increasing the engagement pressure of the lock-up clutch.
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Patent Agency Ranking
公开(公告)号：US20180313444A1
公开(公告)日：2018-11-01
申请号：US15774101
申请日：2016-11-21
Applicant: AISIN AW CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuharu ASAI , Makoto SAWADA , Kyohei SUZUMURA , Mitsuhiro FUKAO , Kenichi TSUCHIDA , Yoshimitsu HYODO , Toshiaki HAYASHI , Fumiaki AIKAWA , Yuta SERIGUCHI , Syuji MORIYAMA , Yoshinobu SOGA , Hiromitsu NITANI
IPC: F16H61/08 , F16H37/08 , F16H61/70 , F16H61/662 , F16H61/686 , F16H61/00
CPC classification number: F16H61/08 , F16H61/662 , Y02T10/76
Abstract: A hydraulic control device that includes a second solenoid valve that is capable of supplying a resisting pressure that maintains the switching valve in the non-reverse state against the reverse range pressure, wherein the switching valve is maintained in the non-reverse state by supplying the resisting pressure from the second solenoid valve while a travel range is switched to at least a reverse range during forward travel.
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公开(公告)号：US20160123462A1
公开(公告)日：2016-05-05
申请号：US14901164
申请日：2014-06-17
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , AISIN AW CO., LTD.
Inventor： Akio NATORI , Makoto SAWADA , Kiyoshi WATANABE , Takeshi TORII , Toshiaki HAYASHI , Masashi TAKIZAWA
IPC: F16H61/14
CPC classification number: F16H61/143 , F16H2061/146
Abstract: When engagement of a lockup clutch is initiated, coupling of the lockup clutch is initiated in a state where a working fluid amount is sufficiently ensured by setting a condition that an engine rotation speed is higher than or equal to a limit engine rotation speed. Thus, it is possible to prevent rapid engagement of the lockup clutch. Here, the limit engine rotation speed is appropriately determined on the basis of a line pressure, and it is possible to reduce a delay of coupling of the lockup clutch by ensuring the working fluid amount while preventing rapid engagement of the lockup clutch.
Abstract translation: 当启动锁止离合器的接合时，通过设定发动机转速高于或等于限制发动机转速的条件，在充分确保工作流体量的状态下启动锁止离合器的联接。 因此，可以防止锁止离合器的快速接合。 这里，基于线路压力适当地确定限制发动机转速，并且通过确保工作流体量同时防止锁止离合器的快速接合，可以减少锁止离合器的联接延迟。
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公开(公告)号：US20190309805A1
公开(公告)日：2019-10-10
申请号：US16374773
申请日：2019-04-04
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Satoshi KAMIJO , Makoto SAWADA , Kenji MATSUO , Kyohei SUZUMURA , Yoshisuke KAMETANI , Michio YOSHIDA , Hiroki TAKEDA , Takashi SEO
Abstract: A control apparatus for a vehicle drive-force transmitting apparatus including a dog clutch that is operated by an actuator to selectively connect and disconnect a drive-force transmitting path. In process of switching of the dog clutch from released state to engaged state, the control apparatus determines whether a rotational speed difference of the dog clutch is equal to or larger than a given difference value when a sleeve of the dog clutch is positioned on an engaging side of a synchronizing position for placing the dog clutch into the engaged state, and stops the switching of the dog clutch to the engaged state and causes the actuator to place the dog clutch back into the released state, when determining that the rotational speed difference is equal to or larger than the given difference value with the sleeve being positioned on the engaging side of the synchronizing position.
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公开(公告)号：US20190271391A1
公开(公告)日：2019-09-05
申请号：US16291507
申请日：2019-03-04
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki TAKEDA , Kyohei SUZUMURA , Yoshisuke KAMETANI , Kenji MATSUO , Satoshi KAMIJO , Michio YOSHIDA , Toshio SUZUKI , Makoto SAWADA , Takashi SEO
Abstract: In a control device of a vehicle including a first power transmission path transmitting a power through a belt-type continuously variable transmission and a second power transmission path transmitting a power through a reduction gear mechanism in parallel between an input shaft and an output shaft and including a dog clutch in series with the reduction gear mechanism in the second power transmission path, when the dog clutch is in an engagement transition state and a rotational speed change of the output shaft is equal to or greater than a predetermined value, the engagement transition state of the dog clutch is canceled to release the dog clutch.
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9.发明申请公开(公告)号：US20180180180A1
公开(公告)日：2018-06-28
申请号：US15851822
申请日：2017-12-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Susumu MORITOMO , Mitsuhiro FUKAO , Makoto SAWADA , Satoshi KATOH
CPC classification number: F16H61/702 , F16H37/022 , F16H37/0846 , F16H59/44 , F16H59/70 , F16H59/72 , F16H59/78 , F16H61/66 , F16H61/662 , F16H2037/0866 , F16H2037/0873 , F16H2059/366 , F16H2059/704 , F16H2061/6614
Abstract: When the speed ratio of a belt-type continuously variable transmission is equal to or larger than a predetermined threshold value, switching between a first power transmission path including a gear transmission mechanism and a second power transmission path including a belt-type continuously variable transmission is performed by means of clutches, so as to reduce a difference in an input shaft rotational speed applied to the clutches before and after the switching.
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