Patents Assigned to JATCO Ltd
  • Publication number: 20220299109
    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: Application
    Filed: October 2, 2020
    Publication date: September 22, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Takuya TAKAMURA
  • Patent number: 11441094
    Abstract: A booster additive concentrate may advantageously contain: (a) an anti-wear mixture of two or more phosphite/phosphate compounds and one or more ether/thioether compounds; (b) an ashless dispersant; (c) a calcium-containing detergent, such as an overbased calcium phenate; (d) ?2 friction modifiers, at least one of which comprises a polyalkylene polyamine succinimide derivative; (e) optionally a corrosion inhibitor; and (f) a lubricating oil basestock. Based on these additive components, the booster additive concentrate may exhibit specific contents of B/Ca/P and may contain minimal or substantially no additional antioxidants. Lubricant compositions can be made from the booster additive concentrates and a fresh/used lubricant oil composition “diluent,” which can rejuvenate the diluent. Such lubricant compositions can have advantageous anti-shudder durability (ASD) lifetimes and other frictional properties.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: September 13, 2022
    Assignees: JATCO LTD, INFINEUM INTERNATIONAL LIMITED
    Inventors: Takashi Aritake, Gou Katou, Hahn Soo Kim, Thomas Lin, Makoto Maeda, Yasuhiro Mogi, Hiroshi Morisato, Hirokazu Saito
  • Patent number: 11441667
    Abstract: A continuously variable transmission includes a variator having a belt wound around a pair of pulleys, and a case forming a container chamber for the variator. The pulleys include fixed pulleys and movable pulleys. The belt includes elements stacked to be arranged in an annular form, and rings binding the element stacked. A circumference wall portion of the case is provided with a monitoring hole enabling flank faces of the elements to be monitored.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: September 13, 2022
    Assignee: JATCO LTD
    Inventors: Kazuyoshi Kobayashi, Masao Arimatsu, Masayuki Furuya, Kenichi Yamamoto, Shogo Fujii, Masakazu Tamura, Kazuya Numata, Hirohisa Yukawa
  • Publication number: 20220282759
    Abstract: A first multi-plate brake device and a second multi-plate brake device are arranged side by side in a direction of a rotating axis X along an inner peripheral surface of a transmission case. In the second multi-plate brake device, the snap ring is supported by a supporting portion which is formed on the first multi-plate brake device side of the snap ring and protrudes from the inner peripheral surface of the transmission case radially inward to the rotating axis X. The piston retainer of the first multi-plate brake device includes an abutting portion that protrudes to the second multi-plate brake device side and abuts the supporting portion from the opposite side of the snap ring of the second multi-plate brake device. The abutting portion includes a thick portion whose radial thickness on a lower side in a vertical direction is increased as compared to on an upper side in the vertical direction based on a state of mounting the automatic transmission on a vehicle.
    Type: Application
    Filed: November 17, 2020
    Publication date: September 8, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Hisashi TOYAMA, Yuya KIMURA
  • Publication number: 20220274581
    Abstract: The lock-up control unit is configured to: in a case where the normal mode is selected, disengage the lock-up clutch when a vehicle speed decreases and reaches a first vehicle speed while the vehicle is traveling in a state where the lock-up clutch is engaged, in a case where the eco mode is selected, disengage the lock-up clutch when the vehicle speed decreases and reaches a second vehicle speed in a brake operation OFF state while the vehicle is traveling in the state where the lock-up clutch is engaged, in the case where the eco mode is selected, disengage the lock-up clutch when the vehicle speed decreases and reaches a third vehicle speed in a brake operation ON state while the vehicle is traveling in the state where the lock-up clutch is engaged, and set the third vehicle speed to a vehicle speed lower than the first vehicle speed, and set the second vehicle speed to a vehicle speed higher than the first vehicle speed.
    Type: Application
    Filed: November 20, 2020
    Publication date: September 1, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Kazuki HIRASAKO
  • Patent number: 11428318
    Abstract: A power transmission device includes a planetary gear, a reduction gear connected downstream of the planetary gear, a parking lock mechanism including a parking pawl configured to lock one rotation element of the planetary gear, and a barrier wall positioned between the planetary gear and the reduction gear. The parking pawl is rotatably supported on the barrier wall.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: August 30, 2022
    Assignee: Jatco Ltd
    Inventor: Shinjiro Ooki
  • Patent number: 11421772
    Abstract: A power transmission device includes: a cylindrical member including an opening formed at a first end in an axial direction, and a wall portion formed at a second end in the axial direction; and a planetary gear set received within the cylindrical member; a carrier of the planetary gear set which includes a protruding portion protruding toward an outer circumference side, and the protruding portion being positioned between the wall portion and a ring gear of the planetary gear set, wherein the carrier is integrally formed with a hub portion of a clutch; the hub portion is positioned on a wall portion side of the carrier; and an outermost circumference portion of the protruding portion is positioned radially outside of an outermost circumference portion of the hub portion.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 23, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Hiroyuki Matsushita, Akira Kamiyama
  • Patent number: 11421778
    Abstract: As a driving source, an engine and an assist motor are provided. An engine control module includes a torque assist control unit for controlling the assist motor by a plurality of types of switching patterns having different torque assist levels. A CVT control unit includes a torque assist coordination control unit that, when a torque assist request is input from the torque assist control unit, carries out the control that increases commanded hydraulic pressure so as to increase the hydraulic pressure of hydraulically operated members. When carrying out the control that increases the commanded hydraulic pressure, the torque assist coordination control unit unifies the levels of the commanded hydraulic pressure regardless of the types of the switching patterns.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: August 23, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Shoichi Hirata, Hironori Miyaishi
  • Patent number: 11407398
    Abstract: A control device for a vehicle includes a drive shaft, an engine coupled to the drive shaft, an electric motor coupled to the drive shaft, and a control unit. The control unit increases a torque of the electric motor when an accelerator pedal opening increases to equal to or more than a predetermined degree of opening during switching of driving sources, and decreases the torque of the electric motor while increasing the torque of the engine after a change of the torque of the engine turns to increase.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 9, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Masaharu Mochizulki, Takashi Enomoto
  • Patent number: 11408501
    Abstract: Disclosed is a support structure for a ring gear, which includes: a clutch drum coupled by spline fitting with the ring gear; and first and second snap rings mounted to a circumferential wall of the clutch drum and supporting the ring gear. The first snap ring is positioned so as not to overlap with the ring gear in a radial direction. The second snap ring is positioned so as to overlap with the ring gear in the radial direction. A length of the first snap ring in the radial direction is longer than a length of the second snap ring in the radial direction.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: August 9, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Kazuya Numata, Hiroyuki Matsushita, Akira Kamiyama, Ryousuke Katsuyama, Tsukasa Shiino
  • Patent number: 11408487
    Abstract: A forward/reverse switching mechanism is provided with a planetary gear set, a reverse brake and a forward clutch. The planetary gear set includes a sun gear which serves as an input part, a carrier which serves as an output part, and a ring gear. The reverse brake is adapted to fix the ring gear. The forward clutch is adapted to connect the ring gear and the sun gear to each other. The ring gear, a drive plate provided on a ring gear side of the reverse brake and a driven plate provided on a ring gear side of the forward clutch are spline-fitted to a clutch drum.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: August 9, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Kazuya Numata, Hiroyuki Matsushita, Akira Kamiyama, Ryousuke Katsuyama, Tsukasa Shiino
  • Publication number: 20220242246
    Abstract: The power supply device includes a low voltage battery, a high voltage battery, a starter generator, a DC-DC converter, a changeover switch, and a controller. When an abnormality or a failure has occurred in the DC-DC converter, the controller controls the changeover switch to connect the starter generator to the other battery without via the DC-DC converter and controls the output of the starter generator corresponding to the connected other battery.
    Type: Application
    Filed: June 1, 2020
    Publication date: August 4, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa NISHIHIRO, Masahiko TAHARA, Masaharu MOCHIZUKI, Takurou HIRANO
  • Publication number: 20220248529
    Abstract: The control unit includes a wiring board on which a connector is disposed. The connector is disposed on a back surface of the wiring board, the back surface being a back surface on a back side of a facing surface facing a body of the control unit. The wiring board includes legs protruding from the back surface on the back side of the facing surface facing the body.
    Type: Application
    Filed: June 2, 2020
    Publication date: August 4, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yusuke SATO, Hideyuki MAMIYA, Katsunori YAMASHITA, Hirohisa YUKAWA, Akira SUWABAYASHI
  • Publication number: 20220243808
    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: Application
    Filed: June 29, 2020
    Publication date: August 4, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Norihira AMANO, Masahiro HAMANO
  • Publication number: 20220234436
    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: Application
    Filed: June 1, 2020
    Publication date: July 28, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa NISHIHIRO, Masahiko TAHARA, Masaharu MOCHIZUKI, Takurou HIRANO
  • Patent number: 11397129
    Abstract: An electromagnetic control valve normality determination system includes: a hydraulic pressure source; an electromagnetic control valve structured to regulate an actual pressure of oil to a pressure command point, wherein the oil is supplied from the hydraulic pressure source; and an actual pressure sensor structured to sense the actual pressure of the oil. For determining normality of pressure regulation of the electromagnetic control valve, a normality determinator is configured to: set pressure command regions for determination about pressure regulation of the electromagnetic control valve, without overlapping among the pressure command regions; determine for each of the pressure command regions whether a difference between the actual pressure and the pressure command point in the each of the pressure command regions is less than a threshold value; and determine that the electromagnetic control valve is normal, in response to affirmation of the determination for all of the pressure command regions.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: July 26, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventor: Junki Matsui
  • Patent number: 11390268
    Abstract: A control device for a vehicle having: an engine; a torque converter having a lock-up clutch; an engagement element disposed downstream of the torque converter; a drive shaft disposed downstream of the engagement element; and an electric motor disposed downstream of the engagement element, and connected to the drive shaft includes a control portion adapted to: in a case where an electric travel mode in which the lock-up clutch and the engagement element are disengaged is switched to an engine travel mode in which the lock-up clutch is disengaged and the engagement element is engaged, decrease driving torque of the electric motor after engagement of the engagement element; and gradually decrease the driving torque of the electric motor while gradually increasing driving torque of the engine after the driving torque of the electric motor is decreased.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: July 19, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Masaharu Mochizuki, Yoshimasa Nishihiro, Takashi Enomoto
  • Patent number: 11371605
    Abstract: A control device for automatic transmission of the present invention includes a transmission mechanism and a park lock device. The park lock device has a rod member and a lock mechanism. The lock mechanism restricts movement of the rod member when being in a locked state. If a CPU reset (reset of a CPU constituting an ATCU) occurs, the control device maintains the locked state of the lock mechanism after a return from the CPU reset.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 28, 2022
    Assignees: JATCO LTD., NISSAN MOTOR CO., LTD.
    Inventors: Takateru Kawaguchi, Fumitaka Nagashima, Hideharu Yamamoto
  • Patent number: 11365783
    Abstract: Disclosed is a transverse segment for a drive belt with a stack of rings and with a number of the transverse segments, which transverse segment includes a base part and two pillar parts that respectively extend from a respective axial side of the base part in radial outward direction, defining a central opening of the transverse segment between them, and that are each provided with a hook portion extending over a part of the central opening in the general direction of the respectively opposite pillar part. A width dimension of one of the pillar parts of the transverse segment is less than a width dimension of the respective other pillar part.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: June 21, 2022
    Assignees: JATCO LTD, ROBERT BOSCH GMBH
    Inventors: Yuji Takahashi, Geert Lamers, Kouhei Toyohara, Michael Keersmaekers, Makoto Momoi, Takeshi Kimura
  • Patent number: 11365805
    Abstract: A vehicle includes a transmission having a variator and a sub-transmission mechanism, a controller serving as a shift control unit adapted to, as shift of the transmission, shift the sub-transmission mechanism and the variator so that a through speed ratio becomes a target speed ratio, and an engine serving as a torque increasing portion adapted to increase a torque inputted to the transmission in association with the shift of the transmission. The controller has a torque setting unit adapted to make a magnitude of an inclination larger as an increase amount of the engine rotation speed in association with the shift of the transmission is larger.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: June 21, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Seiya Kitagawa, Tomoaki Honma