Patents Assigned to JATCO Ltd
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Patent number: 12044303Abstract: An apparatus includes a heat exchanger, a power transmission mechanism, a lubricating oil passage that is located downstream of the heat exchanger and guides lubricating oil to the power transmission mechanism, and a drain oil passage that is located downstream of the heat exchanger and drains the lubricating oil.Type: GrantFiled: October 25, 2021Date of Patent: July 23, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Akira Kakimi, Tomoo Ikeda
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Publication number: 20240239183Abstract: A vehicle includes: a housing configured to accommodate a power transmission mechanism; a covering having a portion that covers the housing; and a liquid interposed between an outer surface of the covering and an outer surface of the housing.Type: ApplicationFiled: May 26, 2022Publication date: July 18, 2024Applicant: JATCO LtdInventor: Hideki MATSUKURA
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Publication number: 20240229926Abstract: Provided is a control device for a vehicle including a first oil pump that is driven by a first drive source driving a drive wheel of a vehicle and configured to supply oil to a hydraulic pressure actuation machine, and a second oil pump that is driven by a second drive source different from the first drive source and configured to supply oil to the hydraulic pressure actuation machine. The control device drives the second oil pump when a start switch of the vehicle is turned on and the first drive source is started for the first time, and drives the second oil pump when the second oil pump is not driven for a first predetermined time after the first drive source is started, and a rotation speed of the second oil pump when the first drive source is started is lower than a rotation speed of the second oil pump after the first drive source is started.Type: ApplicationFiled: February 16, 2022Publication date: July 11, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Koichi OKUNO, Keisuke IWADO, Makoto OGURI
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Publication number: 20240229916Abstract: Provided is a unit including: a heat exchanger; a housing configured to accommodate a power transmission mechanism; and a covering having a portion that covers the housing, in which the heat exchanger has a portion offset from the covering when viewed in a radial direction, and the heat exchanger has a portion that overlaps the covering when viewed in the radial direction.Type: ApplicationFiled: May 26, 2022Publication date: July 11, 2024Applicant: JATCO LtdInventor: Yusuke OOTA
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Publication number: 20240235331Abstract: A component comprising: a first case portion having a tunnel portion having an opening end opening toward an axial direction; and a second case portion having a catch tank portion opening upward, wherein the first case portion and the second case portion face each other such that a bottom portion of the tunnel portion and a bottom portion of the catch tank portion are coupled to each other, an opening area of the opening end of the tunnel portion on the second case portion side is larger than an opening area of the opening end of the tunnel portion on a side opposite to the second case portion side, the tunnel portion as a whole is inclined downward from the second case portion side of the tunnel portion to the side opposite to the second case portion side of the tunnel portion, and the second case portion side of the tunnel portion is inclined downward toward the catch tank portion.Type: ApplicationFiled: February 28, 2022Publication date: July 11, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Yuuki TANAKA, Yutaka OKUMURA, Yusuke SUZUKI, Yojiro MOCHIZUKI
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Publication number: 20240229920Abstract: Provided is a unit including: a housing configured to accommodate a planetary gear mechanism, in which the housing includes a flow path through which a coolant flows, the planetary gear mechanism includes a ring gear fixed to the housing, and the flow path has a portion that overlaps the ring gear when viewed in a radial direction.Type: ApplicationFiled: May 26, 2022Publication date: July 11, 2024Applicant: JATCO LtdInventor: Toshikazu OSHIDARI
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Publication number: 20240229921Abstract: Provided is a unit including: a motor case configured to accommodate a motor, a gear case configured to accommodate a gear connected to the motor; and a cover having a portion sandwiched between the gear and the motor, in which the motor case communicates with the gear case via an opening of the cover, and the opening is positioned below a horizontal plane passing through an axis of the gear and orthogonal to a gravity direction.Type: ApplicationFiled: March 18, 2022Publication date: July 11, 2024Applicant: JATCO LtdInventors: Masahiro KOSAKA, Hiroki UEHARA, Yoonseok CHOI, Doohee YOON
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Publication number: 20240227548Abstract: Provided is a unit including: a heat exchanger; and a housing configured to accommodate a differential gear mechanism, in which the housing has a portion having an inclined surface surrounding the differential gear mechanism in a radial direction, and the heat exchanger has a portion that overlaps the inclined surface when viewed in an axial direction.Type: ApplicationFiled: May 26, 2022Publication date: July 11, 2024Applicant: JATCO LtdInventor: Yusuke OOTA
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Patent number: 12018749Abstract: In a vehicle control device for controlling the vehicle, when automatic downshift control for automatically downshifting a speed ratio of the transmission is executed in the case where a drive current value of the motor obtained when the second oil pump is driven is larger than a maximum value of the drive current value of the motor obtained when the second oil pump is driven in a normal drive state, the vehicle control device increases a minimum rotation speed of the drive source compared to a case where the drive current value of the motor is equal to or less than the maximum value, and when the automatic downshift control is executed in the case where a line pressure generated by a hydraulic pressure supplied from the first oil pump and the second oil pump is larger than a predetermined value, the vehicle control device does not increase the minimum rotation speed of the drive source even in the case where the drive current value of the motor obtained when the second oil pump is driven is larger than the mType: GrantFiled: February 25, 2022Date of Patent: June 25, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tarou Murazumi, Hajime Tasaka, Keisuke Iwado, Hiroyuki Tokoi, Yuji Oishi
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Patent number: 12018742Abstract: The sensor arrangement structure includes a pulley that rotates about a rotation axis; and a sensor that detects rotation of the pulley. The pulley includes a fixed pulley, a movable pulley that can be displaced relative to the fixed pulley in a direction of the rotation axis, and a plunger defining an oil chamber on a back of the movable pulley. The plunger is provided with a detection target portion in a region that can be visually recognized from the direction of the rotation axis, and the sensor is provided on a support portion that rotatably supports the fixed pulley in a direction along the rotation axis and faces the region in which the detection target portion is provided.Type: GrantFiled: January 18, 2022Date of Patent: June 25, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Yusuke Nakano, Fumikazu Nagaoka, Hui Jin
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Publication number: 20240183440Abstract: A baffle plate including a body portion, a cover portion and a seal member, a final gear and a driven sprocket disposed in an accommodating chamber of the baffle plate, an oil pump serving as a source of oil for lubrication, and an oil pan are provided. At least one of the body portion, the cover portions and the seal members includes a material that shrinks as the temperature of the oil decreases. The baffle plate is dimensioned such that a gap is sealed by the seal member when the temperature of the oil is equal to or higher than a predetermined oil temperature and an aperture is formed when the temperature of the oil is less than the predetermined oil temperature. The gap is the gap between an inner circumference of an outer wall portion of the body portion and each of a base portion of the cover portion and a base portion of the cover portion.Type: ApplicationFiled: February 16, 2024Publication date: June 6, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventor: Tsutomu ITOU
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Patent number: 11994197Abstract: A power transmission device having: a case formed by assembling a first case member and a second case member; and a shaft member supported by the case, the power transmission device comprising: a protrusion provided to the first case member and protruding in the axial direction along to the direction of assembling the case; and a recess provided to the second case member and recessed in the axial direction. The shaft member is supported by the protrusion in the recess.Type: GrantFiled: February 25, 2022Date of Patent: May 28, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Ryuzaburo Kobayashi, Kunihiko Fukanoki, Akira Kamiyama
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Patent number: 11990824Abstract: The power transmission device has the rotating electric machine, the housing that houses the stator of the rotating electric machine, and the pipe as a refrigerant liquid feeding member that has the holes. In the upper part of the housing is provided the opening that introduces oil ejected from the holes. In the lower part of the housing is provided the oil reservoir that forms an oil pool.Type: GrantFiled: February 9, 2021Date of Patent: May 21, 2024Assignee: JATCO LTDInventors: Daiki Tanaka, Akira Suwabayashi, Masahiro Kosaka
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Publication number: 20240151305Abstract: A vehicle includes a transmission which has a first oil pump driven by rotation of a drive source that drives a drive wheel and a second oil pump provided with a check valve on a suction side and driven by a motor. In a vehicle control device for controlling the vehicle, a minimum value of a drive current value of the motor is defined as a first current value, when the second oil pump is driven in a normal drive state, and a minimum rotation speed of the drive source is increased compared to a case in which the drive current value of the motor is equal to or larger than the first current value, when an automatic downshift control for automatically downshifting a speed ratio of the transmission is executed in a case in which the drive current value of the motor is smaller than the first current value when the second oil pump is driven.Type: ApplicationFiled: February 25, 2022Publication date: May 9, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Tarou MURAZUMI, Hajime TASAKA, Junki MATSUI, Masakatsu OGAWA
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Patent number: 11976724Abstract: [PROBLEMS] When an acceleration request from a driver is large, upshift is performed under a high engine rotation speed. [SOLUTIONS] Provided is an automatic transmission, including: a torque converter that is disposed downstream of a drive source in a power transmission path and is provided with a lockup clutch; and a transmission mechanism that is disposed downstream of the torque converter and changes a speed ratio between an input shaft and an output shaft, in which in a state where the lockup clutch is engaged, when a rotation speed of the input shaft reaches a first rotation speed, the automatic transmission starts upshift, and in a state where the lockup clutch is disengaged or slips, when the rotation speed of the input shaft reaches a second rotation speed obtained by subtracting a first predetermined rotation speed from the first rotation speed, the automatic transmission starts upshift, and the first predetermined rotation speed decreases as an output torque of the drive source increases.Type: GrantFiled: February 15, 2022Date of Patent: May 7, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Seiichirou Takahashi, Koji Saito
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Patent number: 11976723Abstract: [PROBLEMS] To reduce a sense of discomfort given to a driver due to vehicle deceleration caused by a downshift that is not intended by the driver, which is caused by a failure of a rotation speed sensor or the like. [SOLUTIONS] An automatic transmission includes: a transmission mechanism configured to shift rotation of a driving source and transmit the rotation to a driving wheel; and a clutch configured to control transmission of a torque from the driving source to the driving wheel, wherein when a change rate of a rotation speed of the driving source is equal to or higher than a predetermined change rate, a torque transmission capacity of the clutch is reduced.Type: GrantFiled: January 11, 2022Date of Patent: May 7, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventor: Kazue Shimokawara
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Patent number: 11976719Abstract: A transmission, includes a transmission mechanism including a torque converter having a lock-up clutch; an oil pump configured to discharge an oil to be supplied to the transmission mechanism; a lock-up oil pressure control valve configured to adjust a pressure of the oil discharged from the oil pump and supply the oil to the lock-up clutch; a lubricating oil pressure control valve configured to adjust the pressure of the oil discharged from the oil pump and supply the oil to a portion to be lubricated of the transmission mechanism; and a controller configured to control the lock-up oil pressure control valve.Type: GrantFiled: November 20, 2020Date of Patent: May 7, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Takeaki Ishibashi, Tomohiro Inoue, Sho Kowatari
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Publication number: 20240141985Abstract: In a vehicle control device for controlling the vehicle, when automatic downshift control for automatically downshifting a speed ratio of the transmission is executed in the case where a drive current value of the motor obtained when the second oil pump is driven is larger than a maximum value of the drive current value of the motor obtained when the second oil pump is driven in a normal drive state, the vehicle control device increases a minimum rotation speed of the drive source compared to a case where the drive current value of the motor is equal to or less than the maximum value, and when the automatic downshift control is executed in the case where a line pressure generated by a hydraulic pressure supplied from the first oil pump and the second oil pump is larger than a predetermined value, the vehicle control device does not increase the minimum rotation speed of the drive source even in the case where the drive current value of the motor obtained when the second oil pump is driven is larger than the mType: ApplicationFiled: February 25, 2022Publication date: May 2, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Tarou MURAZUMI, Hajime TASAKA, Keisuke IWADO, Hiroyuki TOKOI, Yuji OISHI
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Publication number: 20240133463Abstract: Provided is a control device for a vehicle including a first oil pump that is driven by a first drive source driving a drive wheel of a vehicle and configured to supply oil to a hydraulic pressure actuation machine, and a second oil pump that is driven by a second drive source different from the first drive source and configured to supply oil to the hydraulic pressure actuation machine. The control device drives the second oil pump when a start switch of the vehicle is turned on and the first drive source is started for the first time, and drives the second oil pump when the second oil pump is not driven for a first predetermined time after the first drive source is started, and a rotation speed of the second oil pump when the first drive source is started is lower than a rotation speed of the second oil pump after the first drive source is started.Type: ApplicationFiled: February 16, 2022Publication date: April 25, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Koichi OKUNO, Keisuke IWADO, Makoto OGURI
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Publication number: 20240136891Abstract: A component comprising: a first case portion having a tunnel portion having an opening end opening toward an axial direction; and a second case portion having a catch tank portion opening upward, wherein the first case portion and the second case portion face each other such that a bottom portion of the tunnel portion and a bottom portion of the catch tank portion are coupled to each other, an opening area of the opening end of the tunnel portion on the second case portion side is larger than an opening area of the opening end of the tunnel portion on a side opposite to the second case portion side, the tunnel portion as a whole is inclined downward from the second case portion side of the tunnel portion to the side opposite to the second case portion side of the tunnel portion, and the second case portion side of the tunnel portion is inclined downward toward the catch tank portion.Type: ApplicationFiled: February 28, 2022Publication date: April 25, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Yuuki TANAKA, Yutaka OKUMURA, Yusuke SUZUKI, Yojiro MOCHIZUKI