Patents Assigned to JATCO
  • Power transmission device
    Patent number: 11821513
    Abstract: A power transmission device includes a bearing, a differential mechanism, a case that houses the differential mechanism, a pinion gear supported by the case, a wall part that overlaps the case in an axial direction, a plate that is provided between the wall part and the case in the axial direction, and that supports the case with the bearing being interposed, and a parking pawl that is rotatably fixed to the plate in a position that overlaps the plate in the axial direction.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: November 21, 2023
    Assignee: Jatco Ltd
    Inventor: Toshikazu Oshidari
  • Park lock mechanism
    Patent number: 11821512
    Abstract: A park lock mechanism configured to restrict or allow a rotation of a rotating shaft includes a park pole configured to restrict the rotation of the rotating shaft and having a first inclined surface, and a park wedge having a second inclined surface capable of abutting on the first inclined surface and configured to move the park pole to a lock position that restricts the rotation of the rotating shaft, in which the park pole includes a protrusion protruding from a first side surface on a park wedge side in a moving direction of the park wedge, and the protrusion is formed so as to be continuous with the first inclined surface, and has a third inclined surface capable of abutting on the second inclined surface.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: November 21, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Hitoshi Nakata, Toshihiko Watanabe
  • Diagnostic device and control device for automatic transmission
    Patent number: 11815177
    Abstract: The transmission controller is configured to, when the received range position signal indicates that the range position is switched from a travelling range to a neutral range during travelling, output an instruction to disengage all of friction elements that are in an engaged state in the travelling range, output an instruction to at least one friction element before the instruction to disengage all of the friction elements that are in the engaged state in the travelling range is output, confirm a change in a rotation speed of a transmission input shaft after the instruction to disengage is output to the at least one friction element, and when there is no change in the rotation speed, diagnose that the friction element instructed to be disengaged is in an erroneously engaged state in which the friction element is not able to be disengaged.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: November 14, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Norihira Amano, Masahiro Hamano
  • Control device and control method for automatic transmission, and non-transitory computer-readable medium
    Patent number: 11808349
    Abstract: The control device is configured to supply an offset current value to disengagement solenoids of disengagement-side friction engaging elements among a plurality of shift solenoids that control respective shift oil pressures applied to the plurality of friction engaging elements, and when a current gear position is a first speed position or a reverse position, decrease a current value to be supplied to at least one of the disengagement solenoids that are supplied with the offset current value to be lower than the offset current value.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: November 7, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Takuya Takamura
  • LID COMPONENT
    Publication number: 20230349459
    Abstract: A lid component is arranged to face an electric oil pump. The lid component includes an accommodation groove that accommodates at least a part of the electric oil pump on a surface side from which a lid-side connector protrudes.
    Type: Application
    Filed: June 2, 2021
    Publication date: November 2, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Moe HIDAKA, Yasuhiro YOSHIDA, Toshiyuki FUJII
  • VALVE ARRANGEMENT STRUCTURE OF CONTROL VALVE UNIT
    Publication number: 20230323946
    Abstract: A valve arrangement structure of a control valve unit includes a control valve body to which oil is supplied from a main pump. The valve arrangement structure includes a pressure regulator valve that is arranged in the control valve body and regulates a pressure of discharged oil from the main pump to a line pressure, a pressure control valve that is arranged in the control valve body and regulates the pressure of the oil to a required pressure with the line pressure as a source pressure, and a first oil passage that is provided in the control valve body and connects the main pump and the pressure regulator valve. The pressure control valve is arranged on a second oil passage branched from the first oil passage.
    Type: Application
    Filed: September 21, 2021
    Publication date: October 12, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Hisao NOBU
  • DAMPING PRESSURE SUPPLY CIRCUIT FOR PULLEY PRESSURE CONTROL VALVE
    Publication number: 20230323945
    Abstract: A hydraulic control circuit includes a pressure regulator valve, a first pilot valve, a second pilot valve, and a third pilot valve. A first pilot pressure is introduced as a source pressure into the primary solenoid valve that generates a primary signal pressure and a secondary solenoid valve that generates a secondary signal pressure. A second pilot pressure is introduced as a source pressure into a lock-up solenoid valve that generates the lock-up signal pressure. A third pilot pressure is introduced as a damping pressure into a primary regulator valve that controls a primary pulley pressure according to the primary signal pressure, and into a secondary regulator valve that controls a secondary pulley pressure according to the secondary signal pressure.
    Type: Application
    Filed: September 21, 2021
    Publication date: October 12, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Hisao NOBU
  • APPARATUS AND PLATE
    Publication number: 20230323940
    Abstract: 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: Application
    Filed: October 25, 2021
    Publication date: October 12, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Akira KAKIMI, Tomoo IKEDA
  • POWER TRANSMISSION DEVICE
    Publication number: 20230313878
    Abstract: A power transmission device, includes a motor; a gear mechanism connected downstream of the motor; a pump that sucks oil through a pump inlet; and a box that accommodates the motor and the gear mechanism. The pump inlet is provided on an inner wall of the box.
    Type: Application
    Filed: September 8, 2021
    Publication date: October 5, 2023
    Applicant: JATCO Ltd
    Inventor: Masumi FUJIKAWA
  • POWER TRANSMISSION DEVICE
    Publication number: 20230313877
    Abstract: A power transmission device includes a motor, a gear mechanism connected downstream of the motor; and a pump that sucks oil through a pump inlet. A shortest distance between an open end of the pump inlet and a surface of a stator of the motor is shorter than a shortest distance between the open end of the pump inlet and a surface of the gear mechanism.
    Type: Application
    Filed: September 8, 2021
    Publication date: October 5, 2023
    Applicant: JATCO Ltd
    Inventor: Toshikazu OSHIDARI
  • POWER TRANSMISSION DEVICE
    Publication number: 20230304571
    Abstract: A power transmission device, includes a motor; a gear mechanism connected downstream of the motor; a drive shaft connected downstream of the gear mechanism and disposed passing through an inner periphery of the motor; a pump that sucks oil through a pump inlet; and a plate that includes a facing surface facing the gear mechanism in an axial direction. The pump inlet is disposed adjacent to the plate on a back surface side of the facing surface.
    Type: Application
    Filed: September 8, 2021
    Publication date: September 28, 2023
    Applicant: JATCO Ltd
    Inventor: Masumi FUJIKAWA
  • Power transmission device and vehicle
    Patent number: 11767909
    Abstract: A vehicle includes a motor, a gear mechanism connected downstream of the motor, a box that has a motor chamber that houses the motor, a gear chamber that houses the gear mechanism and lubricating oil, and an exhaust pipe. A first cooling box, in which cooling liquid that cools the motor is introduced, is configured on an outer circumference of the motor. A second cooling box, which is connected so that cooling liquid can circulate between the second cooling box and the first cooling box, is configured on an outer circumference of the box. The motor chamber is arranged at a position spaced further apart from the exhaust pipe than the gear chamber.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: September 26, 2023
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Kenjiro Yasui, Yusuke Suzuki, Takayoshi Urushibata
  • Power transmission device
    Patent number: 11767907
    Abstract: A power transmission device includes a motor, a gear mechanism connected downstream of the motor and lubricated by oil, and a box. The box has a wall part that covers an outer circumference of the gear mechanism, and a jacket part that covers an outer circumference of the wall part. A cooling chamber, in which cooling liquid is introduced, is formed between the wall part and the jacket part. The cooling chamber includes a portion that overlaps with the gear mechanism when seen from a radial direction, and a portion that overlaps the gear mechanism when seen from an axial direction.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: September 26, 2023
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Kenjiro Yasui, Yusuke Suzuki, Takayoshi Urushibata
  • Vehicle
    Patent number: 11766927
    Abstract: A vehicle includes: a low voltage battery constituted by a lithium-ion battery, the low voltage battery supplying an electric power to an electric component mounted to a vehicle; a high voltage battery constituted by a lithium-ion battery, the high voltage battery having an output voltage higher than an output voltage of the low voltage battery; a first rotating electrical machine that operates by an electric power supplied from the high voltage battery, the first rotating electrical machine generating a torque for driving the vehicle; and a second rotating electrical machine for starting the engine. The second rotating electrical machine operates by an electric power supplied from the high voltage battery.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: September 26, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Masahiko Tahara, Masaharu Mochizuki, Takurou Hirano
  • Power transmission device
    Patent number: 11761534
    Abstract: A power transmission device includes a gear mechanism, a wall part that overlaps with the gear mechanism in an axial direction, a plate provided between the wall part and the gear mechanism in the axial direction, and a park lock mechanism. The park lock mechanism has a parking pawl on a side of a surface of the plate facing the wall part. The park lock mechanism has a manual shaft and/or a detent mechanism on a side of a surface of the plate facing the gear mechanism.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 19, 2023
    Assignee: Jatco Ltd
    Inventors: Kenjiro Yasui, Takayoshi Urushibata, Yusuke Suzuki
  • Continuously variable transmission for vehicle
    Patent number: 11754151
    Abstract: A continuously variable transmission for a vehicle includes: a variator including; a primary pulley, a secondary pulley, and an endless annular member wound around the primary pulley and the secondary pulley, the secondary pulley being provided with an urging member configured to generate an urging force in a direction in which a groove width of the secondary pulley is decreased, and a transmission gear ratio of the variator being brought to a high side of a lowest transmission gear ratio by a centrifugal hydraulic operation of an oil stored in a pulley pressure receiving chamber of the primary pulley when a vehicle speed becomes equal to or greater than a predetermined vehicle speed when the vehicle is towed.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: September 12, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Atsushi Kuroki
  • Lockup control device of automatic transmission and lockup control method thereof
    Patent number: 11754175
    Abstract: The controller starts an output of an engagement instruction of the lockup clutch when a vehicle speed becomes a lockup start vehicle speed under a state where the lockup clutch is disengaged. When the vehicle speed, which is obtained a predetermined time after the output of the engagement instruction is started due to the vehicle speed becoming the lockup start vehicle speed, has reached a predetermined vehicle speed, the controller continues the output of the engagement instruction. When the vehicle speed has not reached the predetermined vehicle speed, the controller stops the output of the engagement instruction and restarts the output of the engagement instruction when the vehicle speed reaches a lockup restart vehicle speed which is set to a vehicle speed higher than the lockup start vehicle speed while the output is stopped.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: September 12, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Takeaki Ishibashi, Ikuhiro Iwamoto
  • Control device and control method for automatic transmission
    Patent number: 11754174
    Abstract: The transmission control unit includes a gear ratio abnormality determination unit and a limp home control unit. The gear ratio abnormality determination unit is configured to determine that a gear ratio is abnormal when, during travelling at a predetermined gear position, a difference between an actual gear ratio, which is calculated based on a transmission input shaft rotation speed and a transmission output shaft rotation speed, and a set gear ratio at the predetermined gear position is equal to or greater than a set value.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: September 12, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Norihira Amano, Masahiro Hamano
  • Power transmission device
    Patent number: 11746883
    Abstract: A power transmission device includes a box, a case disposed in the box, a differential mechanism housed in the case, and a planetary gear mechanism disposed in the box and supported by the case. The planetary gear mechanism includes a sun gear and a pinion gear that engages with the sun gear. The box has a shelf part above a horizontal line that passes through a revolution center of the pinion gear. The shelf part is arranged at a position that does not overlap the sun gear when viewed from radially above.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 5, 2023
    Assignee: Jatco Ltd
    Inventors: Kenjiro Yasui, Takayoshi Urushibata, Yusuke Suzuki
  • Power transmission device
    Patent number: 11746884
    Abstract: A power transmission device includes a pinion gear having a large pinion gear and a small pinion gear, a carrier that supports the pinion gear, a ring gear that engages with the small pinion gear, an oil supply unit positioned above a horizontal line that passes through a revolution center of the pinion gear, and a downstream side wall part facing a gear surface of the large pinion gear. The downstream side wall part is arranged to be adjacent to the oil supply unit further downstream in a revolution direction of the pinion gear than the oil supply unit when viewed from an axial direction.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 5, 2023
    Assignee: Jatco Ltd
    Inventors: Yusuke Suzuki, Takayoshi Urushibata, Kenjiro Yasui