-
公开(公告)号：US09759314B2
公开(公告)日：2017-09-12
申请号：US15023071
申请日：2014-09-25
Applicant: AISIN AW CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kenichi Tsuchida , Yoshimitsu Hyodo , Yuhei Yoshioka , Nobuhiko Miyamoto , Yuichiro Kato , Toshihiko Kamiya , Akio Murasugi , Masakazu Owatari
CPC classification number: F16H61/12 , F16H61/00 , F16H2061/1224 , F16H2061/1264
Abstract: A hydraulic control apparatus, wherein the first switching valve receives an input of one of the hydraulic pressure from the first electromagnetic valve device and the predetermined hydraulic pressure from the third switching valve, as a switching signal pressure, the first switching valve is switched from the first state to the second state in response to the input of the switching signal pressure, and the first switching valve is held in the second state, and the second switching valve receives an input of one of the hydraulic pressure from the first electromagnetic valve device and the predetermined hydraulic pressure from the third switching valve, as a holding pressure for holding the normal supply state.
-
公开(公告)号：US10281032B2
公开(公告)日：2019-05-07
申请号：US15452849
申请日：2017-03-08
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tomohiro Asami , Masakazu Owatari , Takashi Miura , Yuki Murakami
Abstract: Under an abnormal determination, when a transmission gear stage is switched, a torque limit value is changed from a value before switching of the transmission gear stage to a value after switching thereof in a period in which this transmission gear stage is switched.
-
公开(公告)号：US10253877B2
公开(公告)日：2019-04-09
申请号：US15612356
申请日：2017-06-02
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroyuki Sawada , Takahiro Kondo , Masakazu Owatari , Tatsuro Hatano , Yoshiki Ando
Abstract: In a case where intermediate gear stage fault occurs, an electronic control unit determines, using a predetermined relationship for determining gear stage switching between a gear stage on a lower side than the intermediate gear stage by one stage and the intermediate gear stage, whether or not to execute gear stage switching between the low gear stage and a gear stage on a higher than the intermediate gear stage by one stage. For example, compared to using a relationship for determining gear stage switching between a gear stage on the higher side and the intermediate gear stage, it is possible to execute gear stage switching between a gear stage on the lower side and a gear stage on the higher side in a low vehicle speed region. Therefore, it is possible to suppress the influence on vehicle behavior.
-
公开(公告)号：US09890852B2
公开(公告)日：2018-02-13
申请号：US15100447
申请日：2014-12-04
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masakazu Owatari
CPC classification number: F16H61/12 , F16H3/66 , F16H61/0206 , F16H2061/1268 , F16H2200/0052 , F16H2200/201 , F16H2200/2043
Abstract: A control device for a vehicle includes an electronic control unit. The electronic control unit is configured to limit a second hydraulic pressure so that a switching valve is switched to a normal position when the following conditions i) and ii) are satisfied. The condition i) is during partial failure in which a normally closed solenoid valve is de-energized. The condition ii) is when the switching valve is switched to a failure position due to the second hydraulic pressure and downshift to a specific gear shift stage not corresponding to a current gear shift stage occurs.
-
公开(公告)号：US10563737B2
公开(公告)日：2020-02-18
申请号：US15491221
申请日：2017-04-19
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshio Hasegawa , Masakazu Owatari , Norihiro Tsukamoto
Abstract: An automatic transmission, which is configured such that there is no difference of rotation between a third sun gear and an intermediate shaft in a state where a second clutch is brought into a release state and a seventh speed stage is established, is provided. In the automatic transmission, at the time of a gear shift from a tenth speed stage where second and third clutches and a first brake are brought into an engagement state to a seventh speed stage where first, third, and fourth clutches are brought into an engagement state, the fourth clutch is engaged and the first brake is released to establish the seventh speed stage with the second clutch in the engagement state. Then, the first clutch is engaged and the second clutch is released to make transition to the seventh speed stage with the second clutch in the release state.
-
Patent Agency Ranking
公开(公告)号：US11221067B2
公开(公告)日：2022-01-11
申请号：US17130703
申请日：2020-12-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masato Shimoda , Naoto Moriya , Masakazu Owatari
IPC: F16H59/70 , F16H59/44 , F16H59/42 , F16H59/40 , F16H59/18 , F16H61/02 , F16H59/14 , F16H59/68 , F16H61/00
Abstract: A control apparatus includes an input torque acquisition unit acquiring an input torque input to an automatic transmission input shaft, a clutch torque acquisition unit acquiring a clutch torque of a clutch operated to change a gear stage of the transmission, a torque determination unit determining a change of the input torque and the clutch torque from a first state in which one of the input torque and the clutch torque is greater than the other to a second state in which the other one is greater than the one, a gear ratio calculation unit calculating an intermediate gear ratio between pre-shift and post-shift gear ratios, and a torque calculation unit, when the torque determination unit determines a change of the input torque and the clutch torque from the first state to the second state, executing a process of calculating a target engine torque based on the intermediate gear ratio.
-
公开(公告)号：US10774902B2
公开(公告)日：2020-09-15
申请号：US16354537
申请日：2019-03-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Norihiro Tsukamoto , Masakazu Owatari
Abstract: A control device of a vehicle including a multi-speed automatic transmission includes a first engagement control portion selecting a selected gear shift position having a synchronous rotation speed lower than an actual input rotation speed of the multi-speed automatic transmission at the time of return from the coasting running due to the depressing operation of the accelerator pedal and increasing an engagement force of an engagement element establishing the selected gear shift position to immediately increase a drive force of the vehicle; and a second engagement control portion engaging the engagement element establishing the target gear shift position when the actual input rotation speed of the multi-speed automatic transmission reaches a determination rotation speed set for determination of attainment to the synchronous rotation speed of the target gear shift position.
-
公开(公告)号：US10711890B2
公开(公告)日：2020-07-14
申请号：US16154878
申请日：2018-10-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki Murakami , Masakazu Owatari , Norihiro Tsukamoto , Kengo Nagai , Satoshi Kato , Susumu Moritomo
Abstract: A control apparatus for a vehicle drive-force transmitting apparatus which includes a gear mechanism and a continuously-variable transmission mechanism and which establishes selectively a first state in which a drive force is transmitted by the gear mechanism and a second state in which the drive force is transmitted by the continuously-variable transmission mechanism. The control apparatus sets a shift-up-action permitted gear ratio of the continuously-variable transmission mechanism, which makes a state-switch-requiring shift-up action is permitted to be executed. When a running speed of the vehicle is not higher than a given value, a predetermined high gear ratio value is set as the shift-up-action permitted gear ratio. When the running speed is higher than the given value, a predetermined gear ratio range ranging from the predetermined high gear ratio value to a predetermined low gear ratio value is set as the shift-up-action permitted gear ratio.
-
公开(公告)号：US10683933B2
公开(公告)日：2020-06-16
申请号：US16159994
申请日：2018-10-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Satoshi Kato , Susumu Moritomo , Masakazu Owatari , Norihiro Tsukamoto
Abstract: A control apparatus for a vehicle drive-force transmitting apparatus which establishes selectively a first state in which a drive force is transmitted by a gear mechanism and a second state in which the drive force is transmitted by a continuously-variable transmission mechanism. The control apparatus executes a shift-up action requiring the first state to be switched to the second state, in (a) a case in which a state of the drive-force transmitting apparatus satisfies a first condition that a gear ratio of the continuously-variable transmission mechanism is not lower than a first gear ratio value and in (b) a case in which the state of the drive-force transmitting apparatus satisfies a second condition that a lap-down control is executed with the gear ratio of the continuously-variable transmission mechanism being not lower than a second gear ratio value that is lower than the first gear ratio value.
-
公开(公告)号：US10167949B2
公开(公告)日：2019-01-01
申请号：US15801960
申请日：2017-11-02
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki Murakami , Masakazu Owatari , Tomohiro Asami
IPC: F16H61/12
Abstract: A control device of a vehicle power transmission device for the vehicle power transmission device including a line pressure regulating device regulating a hydraulic pressure of a hydraulic fluid discharged from an oil pump to a predetermined line pressure while changing an opening area of a discharge flow passage, and an automatic transmission having a predetermined gear position established by engagement of a hydraulic friction engagement element by using the line pressure as a source pressure, the control device comprising: an abnormality determination portion configured to detect a slip of the hydraulic friction engagement element establishing the predetermined gear position at the time of establishment of the predetermined gear position and, if an input torque at the time of occurrence of the slip is equal to or greater than an abnormality determination value defined in advance based on a torque transmittable at a minimum line pressure by the hydraulic friction engagement element establishing the predetermined gear position, to make an abnormality determination indicative of a possibility of an abnormality causing the output hydraulic pressure of the line pressure regulating device to be the minimum line pressure while the opening area of the discharge flow passage is maximized, the abnormality determination value being defined in accordance with a rotation speed of the oil pump such that the abnormality determination value becomes larger when the rotation speed is high as compared to when the rotation speed is low.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.019 seconds)
