Patents Assigned to JATCO Ltd
  • Publication number: 20230074909
    Abstract: A device includes a rotary electric machine, a liquid supply member configured to supply liquid to the rotary electric machine, and a facing member facing the rotary electric machine in an axial direction with the liquid supply member interposed therebetween. The liquid is supplied to the liquid supply member via the facing member.
    Type: Application
    Filed: November 10, 2020
    Publication date: March 9, 2023
    Applicant: JATCO Ltd
    Inventors: Atsushi MAEDA, Ryoichi MIZOKAMI, Masaomi MORISHITA, Masahiro KOSAKA
  • Patent number: 11585426
    Abstract: A power transmission device includes: a gear; a case receiving the gear; and a baffle plate positioned between the gear and the case; the baffle plate including a guide portion arranged to guide an oil scooped up by the gear, into between the baffle plate and the case, and the guide portion being disposed above an oil level within the case, the guide portion being adjacent to an axial side surface of the gear, the guide portion being positioned in the baffle plate on an upstream side in a rotation direction of the gear, and the guide portion including a first bent portion which is positioned on a tip end side, and which is bent in a direction from the case toward the gear.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: February 21, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Tahei Toyoshima, Shingo Yamamoto, Kazuyuki Handa, Masaki Shibuya, Tomohiro Nagata, Masakazu Tamura, Atsuyuki Ide, Yasuyuki Horie, Hideyuki Mamiya, Akira Kakimi
  • Patent number: 11572943
    Abstract: A housing member for a power transmission device connected to a driving source via a torque converter housed in the housing member includes a torque converter side mating face closer to the torque converter. The torque converter side mating face has a single-wall structure and a double-wall structure, wherein two adjacent fastening regions are connected circumferentially by a wall in the single-wall structure, and wherein two adjacent fastening regions are connected circumferentially by each of two walls in the double-wall structure. The torque converter side mating face includes: an upper half region in which the double-wall structure has a greater proportion in area than the single-wall structure; and a lower half region in which the double-wall structure has a less proportion in area than the single-wall structure.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: February 7, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Kazuya Numata, Yuuki Sakai, Yusuke Ienaka, Kazuhiro Nishimura, Tatsuya Kumagai, Masakazu Tamura
  • Publication number: 20230030147
    Abstract: An oil pressure supply device includes: a first oil pump configured to be operated by a traveling drive source of a vehicle; a second oil pump configured to be operated by a motor different from the traveling drive source and to be switched between an operation and a stop according to a traveling condition of the vehicle; a pressure regulating circuit configured to regulate an oil pressure generated by the first oil pump and the second oil pump and supply the regulated oil pressure to an oil chamber; an oil passage configured to connect the second oil pump with an oil source; and a check valve provided in the oil passage.
    Type: Application
    Filed: December 8, 2020
    Publication date: February 2, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Tomoko SUGANO, Takurou KAWASUMI, Tomoya OTAKI
  • Publication number: 20230026991
    Abstract: An oil pressure supply device supplies, to an oil chamber, an oil pressure generated by suctioning oil from an oil source with an oil pump. The oil pressure supply device includes a first oil passage connected to a suction side of the oil pump; a first check valve provided in the first oil passage and configured to close the first oil passage and prevent oil from moving to the oil source side when the oil pump is stopped; a second oil passage connected to a discharge side of the oil pump; and a second check valve provided in the second oil passage and configured to close the second oil passage and prevent oil from moving to the oil pump side when the oil pump is stopped. When the oil pump is stopped, the second check valve closes the second oil passage earlier than the first check valve closes the first oil passage.
    Type: Application
    Filed: December 8, 2020
    Publication date: January 26, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Tomoko SUGANO, Takurou KAWASUMI
  • Patent number: 11555537
    Abstract: A power transmission device including a planetary gear, a differential gear and a differential case. The planetary gear includes a carrier, and pinion gears supported by pinion shafts. The differential gear includes a pair of bevel gears supported by a bevel gear shaft, and side gears engaged with the bevel gears. The carrier defines pinion shaft insertion holes in which pinion shafts are respectively inserted. The differential case defines bevel gear shaft insertion holes in which the bevel gear shaft is inserted. A straight line that penetrates the bevel gear shaft insertion holes overlaps with the pinion shaft insertion holes in a circumferential direction, and the bevel gear shaft passes through a center of a circle that connects the pinion shaft insertion holes. When viewed along an axial direction, the pinion shafts do not overlap the side gears, with the side gears being arranged radially inwardly than the pinion shafts.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: January 17, 2023
    Assignee: Jatco Ltd
    Inventor: Toshikazu Oshidari
  • Publication number: 20230009118
    Abstract: An oil passage structure, includes a first tubular member configured to externally fit on a support wall portion and a second tubular member configured to internally fit in the support wall portion and supports an outer periphery of the shaft. An oil passage along a rotation axis direction of the shaft is provided at at least one of a location between the support wall portion and the first tubular member and a location between the support wall portion and the second tubular member.
    Type: Application
    Filed: December 2, 2020
    Publication date: January 12, 2023
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Tomoo IKEDA
  • Patent number: 11548507
    Abstract: A controller includes a control unit which is configured to execute a coast stop control. The coast stop control is configured to perform automatic stopping of the drive source while the vehicle is traveling, when a permitting condition is satisfied, the permitting condition including a condition that a speed ratio R of the variator is lower than a first threshold R1 while the lock-up clutch is in an engaged phase. The control unit is configured to prohibit execution of the coast stop control in a case in which an input-output rotation speed difference of the torque converter is equal to or more than a predetermined value when the lock-up clutch is in the engaged phase.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: January 10, 2023
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Jonghwan Lee, Tomohiro Utagawa, Chadol Kim
  • Publication number: 20220412449
    Abstract: 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: Application
    Filed: November 20, 2020
    Publication date: December 29, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Takeaki ISHIBASHI, Tomohiro INOUE, Sho KOWATARI
  • Patent number: 11536365
    Abstract: A malfunction part sensing device for an automatic transmission for a vehicle which is arranged to attain a plurality of shift stages by selectively engaging a plurality of frictional engagement elements, the malfunction part sensing device includes: a shift stage monitoring section configured to monitor the shift stages before and after the shift of the automatic transmission; a malfunction sensing section configured to sense the malfunction mode from a behavior of the vehicle which is generated in accordance with the malfunction; and a malfunction part limiting section configured to limit the one of the frictional engagement elements in which the malfunction is generated, based on the malfunction mode and a shift manner by a combination of the shift stages before and after the shift.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: December 27, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yutaka Tooyama, Fumitaka Nagashima, Takateru Kawaguchi, Hideharu Yamamoto, Masahiro Hamano
  • Patent number: 11535229
    Abstract: A controller includes a control unit configured to perform stepwise shift that upshifts a CVT in a stepped manner to accelerate a vehicle. The control unit performs a downshift control configured to downshift the continuously variable transmission in a case in which an accelerator pedal is continuously stepped on from before prohibition of the stepwise shift to after prohibition of the stepwise shift.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: December 27, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Jonghwan Lee, Tomoaki Honma, Satoshi Nakano, Koutarou Tagami, Yusuke Ushikubo
  • Patent number: 11524670
    Abstract: The controller forms a control device for a vehicle with which torque generated in an engine and a motor generator is transmissible to a continuously variable transmission in accordance with a driving force request from a driver. The controller includes an engine controller forming a motor control unit adapted to control an output of the motor generator in accordance with the driving force request, and a transmission controller forming a transmission capacity control unit adapted to control a transmitted torque capacity of the continuously variable transmission, and, in a case where motor assistance is performed and when stability of the transmitted torque capacity of the continuously variable transmission is detected, performs the motor assistance.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: December 13, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Jonghwan Lee
  • Patent number: 11519485
    Abstract: The present invention relates to a lock-up clutch of a torque converter. A cover (10) is separated to a pilot (48) and includes an opening (10-1) for installing the pilot (48). Before assembling a clutch driving portion such as a piston, a separator, drive plates, a seal ring, and driven plates, to the pilot (48), rivets (53) are press-fitted into the pilot (48), the cover (10) is abutted to respective head portions of the rivets (53), and the pilot (48) is installed in the cover (10) and is fixed to the cover (10) by welding. Thereafter, the piston, the drive plates and the driven plates are disposed between the separator and the cover (10), the seal ring is contact with the separator, the separator is press-fitted into projection ends of the rivets (53), and then projection portions (53-2) of the rivets (53) are crimped.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: December 6, 2022
    Assignees: UNIPRES CORPORATION, JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Nobuhiko Furuya, Ryuta Mori, Mitsuyoshi Tako, Daisuke Nakahara, Koshi Asao, Daisuke Usui, Takumi Watanabe, Yasuhiro Ishikawa
  • Patent number: 11511758
    Abstract: A vehicle control device includes a travel environment recognition device configured to recognize travel environment, a vehicle travel state detection device, and an autonomous/manual driving mode controller. The autonomous/manual driving mode controller includes a learning correction unit configured to store at least one of a plurality of control parameters indicating the vehicle travel state by operation of the driver in the autonomous driving mode, and to correct the control parameter in the autonomous driving mode according to the stored control parameter. When the stored control parameter is the control parameter changed by an operation by the driver midway in passing or after passing, the learning correction unit is configured to correct the control parameter in the autonomous driving mode so that an acceleration level or the deceleration level is increased midway in passing or after passing.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: November 29, 2022
    Assignee: Jatco Ltd
    Inventors: To Ko, Shusaku Katakura, Yukifumi Ootsuka
  • Publication number: 20220373076
    Abstract: A transmission, includes a transmission mechanism configured to shift a rotary power input from a power source; an oil pump configured to discharge an oil to be supplied to the transmission mechanism; a lubricating oil pressure control valve configured to adjust a pressure of the oil discharged from the oil pump and supply the oil to a lubrication target portion of the transmission mechanism; and a cooler configured to cool the oil to be supplied to the lubrication target portion of the transmission mechanism by outside air. The lubricating oil pressure control valve adjusts the pressure of the oil supplied to the lubrication target portion in a manner that the pressure of the oil supplied to the lubrication target portion increases as an outside air temperature decreases.
    Type: Application
    Filed: November 6, 2020
    Publication date: November 24, 2022
    Applicants: JATCO Ltd, Nissan Motor Co., Ltd.
    Inventors: Akira NISHIMURA, Arata NAKAMURA, Yuki TAWARA, Katsuhiro MATSUO
  • Publication number: 20220363234
    Abstract: A control device for a vehicle having: an engine; a variator arranged downstream of the engine in a power transmission path connecting the engine and drive wheels; a mechanical oil pump that is driven by the engine and supplies hydraulic pressure to the variator; and an electric oil pump that supplies hydraulic pressure to the variator, wherein the control device for the vehicle has a controller that executes a low standby control which downshifts the variator by moving a belt of the variator in a radial direction during stopping of the vehicle. The controller limits an output of the engine and increases an amount of oil discharged by the electric oil pump when executing the low standby control.
    Type: Application
    Filed: June 4, 2020
    Publication date: November 17, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Hironori MIYAISHI
  • Patent number: 11499613
    Abstract: A torque converter has a torus. The torus has a size set based on a flatness ratio obtained by dividing a width of the torus in an axial direction by a width of the torus in a radial direction, a thinness ratio obtained by dividing the width of the torus in the axial direction by an outer diameter of the torus, and an inner diameter ratio obtained by dividing an inner diameter of the torus by the outer diameter of the torus.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: November 15, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Kazunori Kawashima
  • Publication number: 20220355795
    Abstract: A control device for a vehicle having: an engine; and a variator arranged downstream of the engine in a power transmission path connecting the engine and drive wheels, wherein the control device for the vehicle has a controller that executes a low standby control which downshifts the variator by moving a belt of the variator in a vertical direction (radial direction) during stopping of the vehicle. After starting the low standby control, the controller releases an output limit of the engine based on an actual secondary pressure of the variator.
    Type: Application
    Filed: June 4, 2020
    Publication date: November 10, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Hironori MIYAISHI
  • Publication number: 20220356944
    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: Application
    Filed: October 2, 2020
    Publication date: November 10, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Takeaki ISHIBASHI, Ikuhiro IWAMOTO
  • Publication number: 20220349467
    Abstract: A control device for an automatic transmission in a vehicle with a constant speed travel mode includes: a determination section that determines whether the vehicle is traveling on a slope road; a slope adaptation control section that implements a first transmission shift control if not traveling on a slope road and, if traveling on a slope road, implements a second transmission shift control for selecting a transmission shift position of a lower speed than case of not traveling on a slope road; a delaying section that, upon switching from the second transmission shift control to the first transmission shift control, implements an upshift delay control for performing upshift one by one at a predetermined time interval; and a setting section that, in case of traveling at the constant speed travel mode, sets the time interval shorter in comparison with case of traveling not at the constant speed travel mode.
    Type: Application
    Filed: June 3, 2020
    Publication date: November 3, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Kazuki HIRASAKO