Patents by Inventor Yoshimasa NISHIHIRO

Yoshimasa NISHIHIRO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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
  • 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
  • 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: 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: 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: 11235753
    Abstract: A control device for a vehicle includes a drive shaft, an engagement element, an engine coupled via the engagement element, an electric motor coupled without via the engagement element, and a control unit that instructs a reengagement of the engagement element when an accelerator pedal opening increases to equal to or more than a predetermined degree of opening during switching of driving sources in which an engagement capacity of the engagement element is decreased while a torque of the electric motor is increased, and increases the torque of the electric motor to more than the torque of the electric motor before the accelerator pedal opening increases to equal to or more than the predetermined degree of opening until the engagement capacity of the engagement element starts increasing.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: February 1, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Masaharu Mochizuki, Takashi Enomoto
  • Publication number: 20210039625
    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: Application
    Filed: August 30, 2018
    Publication date: February 11, 2021
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa NISHIHIRO, Masaharu MOCHIZULKI, Takashi ENOMOTO
  • Publication number: 20200361445
    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: Application
    Filed: July 27, 2018
    Publication date: November 19, 2020
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Masaharu MOCHIZUKI, Yoshimasa NISHIHIRO, Takashi ENOMOTO
  • Patent number: 10793156
    Abstract: A vehicle control device is for a vehicle having a drive source, and an automatic transmission connected to the drive source, the automatic transmission having an engagement element for disconnecting/connecting transmission of a driving force and a variator placed further upstream than the engagement element. The vehicle control device includes first and second control units. The first control unit is configured to execute sailing stop control to stop the drive source and to put the automatic transmission into a neutral state when a sailing stop condition is established. The second control unit is configured to start the drive source and to implement downshifting of the variator when a size of a deceleration level is a prescribed value or greater when the sailing stop control is cancelled due to a prescribed sailing stop cancellation condition among sailing stop cancellation conditions being established, and to engage the engagement element after the downshifting.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: October 6, 2020
    Assignee: Jatco Ltd.
    Inventors: Yukifumi Ootsuka, Masayoshi Nakasaki, Yoshimasa Nishihiro
  • Publication number: 20200254994
    Abstract: A control device for a vehicle includes a drive shaft, an engagement element, an engine coupled via the engagement element, an electric motor coupled without via the engagement element, and a control unit that instructs a reengagement of the engagement element when an accelerator pedal opening increases to equal to or more than a predetermined degree of opening during switching of driving sources in which an engagement capacity of the engagement element is decreased while a torque of the electric motor is increased, and increases the torque of the electric motor to more than the torque of the electric motor before the accelerator pedal opening increases to equal to or more than the predetermined degree of opening until the engagement capacity of the engagement element starts increasing.
    Type: Application
    Filed: August 30, 2018
    Publication date: August 13, 2020
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa NISHIHIRO, Masaharu MOCHIZUKI, Takashi ENOMOTO
  • Patent number: 10724627
    Abstract: A control device for a vehicle is provided, which vehicle includes a driving source, a driven machine driven by the driving source, and an automatic transmission having a torque converter provided downstream of the driving source in a power transmission path and having a lockup clutch, and an engaging element provided downstream of the torque converter in the power transmission path. The device includes a control unit adapted to engage the engaging element in a state where the lockup clutch is engaged if a brake pedal is stepped on during neutral running control in which the automatic transmission is brought into a power shut-off state during running of the vehicle.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: July 28, 2020
    Assignee: JATCO LTD
    Inventors: Yusuke Oota, Yoshimasa Nishihiro
  • Patent number: 10690239
    Abstract: A control device for a vehicle is provided, which vehicle includes a driving source, and an automatic transmission having a torque converter provided downstream of the driving source in a power transmission path and having a lockup clutch, and an engaging element provided downstream of the torque converter in the power transmission path. The device includes a control unit which engages the engaging element in a state where the lockup clutch is engaged if an accelerator opening becomes not smaller than a predetermined opening during neutral running control in which the automatic transmission is brought into a power shut-off state during running of the vehicle.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 23, 2020
    Assignee: JATCO LTD
    Inventors: Yusuke Oota, Yoshimasa Nishihiro
  • Patent number: 10661801
    Abstract: A transmission controller gives an engagement instruction to a forward clutch so that the forward clutch is engaged when a rotation speed of the engine becomes a target engine rotation speed set on the basis at least of a vehicle speed and a speed ratio of a continuously variable transmission after the engine is started, if a cancellation request for a sailing-stop control is made during execution of the sailing-stop control, and the continuously variable transmission is downshifted before the forward clutch is engaged, if the target engine rotation speed when the cancellation request for the sailing-stop control is made is less than a first predetermined value.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 26, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Yusuke Oota, Shintaro Ohshio
  • Patent number: 10663058
    Abstract: A vehicle sailing stop control method is provided for a vehicle including a friction engagement element disposed between a traveling drive source and drive wheels, a torque converter disposed between the friction engagement element and the traveling drive source, and including a lock-up clutch for which a power transmission amount is controlled based on hydraulic pressure, and a hydraulic pressure source that can supply the hydraulic pressure while the traveling drive source is stopped. The vehicle sailing stop control method includes: performing sailing stop control so that coasting is performed by cutting off power transmission of the friction engagement element and stopping the traveling drive source upon a sailing stop travel condition being established; and, during coasting by the sailing stop control, placing the lock-up clutch in a power transmission state in which the hydraulic pressure is applied to the lock-up clutch.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: May 26, 2020
    Assignee: Jatco Ltd.
    Inventors: Takuro Kawasumi, Masayoshi Nakasaki, Yoshimasa Nishihiro, Yukifumi Ootsuka, Yusuke Ota, Yusuke Nakano
  • Patent number: 10612656
    Abstract: A control device of controlling a vehicle that includes an automatic transmission is provided with a control unit. The automatic transmission includes a power transmission mechanism with an engaging element, and a variator connected in series to the power transmission mechanism. The control unit of this device completes engagement of the engaging element after downshifting of the variator is completed when at least an accelerator pedal opening becomes not smaller than a predetermined opening, during neutral running control which brings the power transmission mechanism into a power shut-off state during running of the vehicle.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: April 7, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yusuke Oota, Yoshimasa Nishihiro
  • Patent number: 10589731
    Abstract: A sailing stop control method for a vehicle including a transmission and a friction engaging element in series between an engine and drive wheels includes performing a sailing stop control to coast by shutting off power transmission by the friction engaging element, stopping the engine based on satisfaction of a sailing enter condition, restarting the engine upon satisfaction of a sailing exit condition during coasting by the sailing stop control, executing a shift control to set a target speed ratio of the transmission to a highest speed ratio smaller than a coasting speed ratio in normal time and satisfying engine exhaust performance after the restart of the engine if the sailing exit condition is a brake pedal depressing operation, and re-engaging the friction engaging element, if input and output revolution speeds of the friction engaging element are determined to be a synchronous revolution speed after end of the shift control.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: March 17, 2020
    Assignees: Nissan Motor Co., Ltd., JATCO Ltd
    Inventors: Tadashi Iwamoto, Masayoshi Nakasaki, Yoshimasa Nishihiro, Yukifumi Ootsuka
  • Patent number: 10549757
    Abstract: A vehicle control device for controlling a vehicle includes a drive source and an automatic transmission connected to the drive source and including a variator. The vehicle control device includes: a first control unit configured to execute a during-travel drive source stop control for stopping the drive source and shifting the automatic transmission in a neutral state if a during-travel drive source stop condition is satisfied; and a second control unit configured to execute a during-travel drive source stop release control for shifting the automatic transmission in a power transmission state via a rotation synchronization control in the automatic transmission set in the neutral state if a during-travel drive source stop release condition is satisfied.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: February 4, 2020
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Masayoshi Nakasaki, Naoki Kobayashi, Yusuke Oota, Shintaro Ohshio
  • Patent number: 10501083
    Abstract: A vehicle control device includes control means for executing coasting control, in which a friction engaging element is disengaged and a rotation speed of a rotary shaft of a drive source is set at zero, when a shift range corresponds to a travel range and a coasting condition is established, and the control means executes the coasting control when the shift range is modified to a neutral range.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: December 10, 2019
    Assignee: JATCO LTD
    Inventors: Yusuke Nakano, Yusuke Ota, Yoshimasa Nishihiro, Masayoshi Nakasaki, Yukifumi Ootsuka, Takuro Kawasumi, Shintaro Oshio
  • Patent number: 10495221
    Abstract: A control device for a vehicle controlling the vehicle including a driving source and an automatic transmission coupled to the driving source and includes a power transmission mechanism including a forward engaging element. The control device for the vehicle includes a first control unit configured to execute a driving-source-stop-while-traveling control that stops the driving source and brings the automatic transmission into a neutral state when a driving-source-stop-while-traveling condition for stopping the driving source while traveling is satisfied and a second control unit configured to engage the forward engaging element on the basis of input and output rotation speeds of the power transmission mechanism after a driving-source-stop-while-traveling cancellation condition is satisfied.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: December 3, 2019
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Masayoshi Nakasaki, Naoki Kobayashi, Yusuke Oota, Shintaro Ohshio
  • Patent number: 10449964
    Abstract: Variator (20) and forward clutch (Fwd/C) disposed in series are provided between engine (1) having starter motor (15) and driving wheel (7). Sailing stop control that, on the basis of satisfaction of sailing entering condition, interrupts power transmission by frictional engagement element (Fwd/C), stops engine (1) and performs coast-travel is performed. When sailing entering condition is satisfied, coast-travel is started with rotation stop timing of variator (20) being delayed with respect to rotation stop timing of engine (1). When accelerator pedal depression operation intervenes after start of coast-travel, engine (1) is restarted by starter motor (15). When judged that input and output rotation speeds of frictional engagement element (Fwd/C) become synchronization rotation speed after restart of engine (1), frictional engagement element (Fwd/C) is reengaged.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: October 22, 2019
    Assignee: JATCO LTD
    Inventors: Tadashi Iwamoto, Akira Takano, Masayoshi Nakasaki, Yoshimasa Nishihiro, Yukifumi Ootsuka