Patents by Inventor Kazuhiro Miyachi

Kazuhiro Miyachi 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: 10502314
    Abstract: An oil pump driving control device of a vehicle having a main oil pump (14) that is driven by a motor/generator (4) and produces a pump discharge oil to a first clutch (3), a second clutch (5) and a belt-type continuously variable transmission (6) provided on a driving force transmission line. A hybrid control module (81) is provided in this FF hybrid vehicle. The hybrid control module (81) is configured to perform a control so that during vehicle stop, the lower an ATF oil temperature is, the more the pump driving energy to drive the main oil pump (14) is decreased. With this control, consumption energy during the vehicle stop can be reduced.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: December 10, 2019
    Assignee: JATCO LTD
    Inventors: Takanobu Mouri, Taiichi Onoyama, Seishi Shimamura, Kakuzou Kaneko, Akihiro Toyofuku, Ryuichi Arai, Ryuzo Noguchi, Satoshi Harui, Hironori Miyaishi, Tomoyuki Mizuochi, Kenichi Watanabe, Masumi Fujikawa, Kouichi Kotsuji, Shingo Suzuki, Akito Suzuki, Tetsuya Izumi, Keisuke Iwado, Kazuhiro Miyachi
  • Publication number: 20180073628
    Abstract: An oil pump driving control device of a vehicle having a main oil pump (14) that is driven by a motor/generator (4) and produces a pump discharge oil to a first clutch (3), a second clutch (5) and a belt-type continuously variable transmission (6) provided on a driving force transmission line. A hybrid control module (81) is provided in this FF hybrid vehicle. The hybrid control module (81) is configured to perform a control so that during vehicle stop, the lower an ATF oil temperature is, the more the pump driving energy to drive the main oil pump (14) is decreased. With this control, consumption energy during the vehicle stop can be reduced.
    Type: Application
    Filed: March 3, 2016
    Publication date: March 15, 2018
    Applicant: JATCO Ltd
    Inventors: Takanobu MOURI, Taiichi ONOYAMA, Seishi SHIMAMURA, Kakuzou KANEKO, Akihiro TOYOFUKU, Ryuichi ARAI, Ryuzo NOGUCHI, Satoshi HARUI, Hironori MIYAISHI, Tomoyuki MIZUOCHI, Kenichi WATANABE, Masumi FUJIKAWA, Kouichi KOTSUJI, Shingo SUZUKI, Akito SUZUKI, Tetsuya IZUMI, Keisuke IWADO, Kazuhiro MIYACHI
  • Patent number: 9915339
    Abstract: A drive force transmission device is provided with a motor shaft, a transmission input shaft, a drive side sprocket, a resolver rotor and a cylindrical resolver retainer. The motor shaft is configured to be connected to a motor rotor of a motor. The driving force transmission shaft is coaxially connected to the motor shaft. The oil pump sprocket is provided on the driving force transmission shaft for rotating an oil pump. The resolver rotor is disposed on the motor shaft adjacent the oil pump sprocket for detecting a rotational position of the motor. The cylindrical resolver retainer is coaxially disposed on the motor shaft to fix the resolver rotor to the motor shaft. The resolver retainer includes a stopper that forms an axial positioning surface for the resolver rotor by contacting an end portion of the motor shaft, and an axial position limiting surface of the oil pump sprocket.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: March 13, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasuo Takagi, Kazuhiro Miyachi
  • Patent number: 9458909
    Abstract: A drive power transmission device is provided that either disengages a first friction engagement element or a second friction engagement element when the other is engaged. The drive power transmission device detects the temperature of lubricating oil flowing in each friction engagement element using a temperature sensor. The drive power transmission device selectively disengages either a forward clutch or a reverse brake disengages when the other is engaged. The forward clutch and the reverse brake overlap axially, and are layered radially in an inner/outer arrangement. The temperature sensor is positioned at the periphery of the forward clutch and the reverse brake. A lubricating oil pathway is formed such that lubricating oil for cooling the forward clutch and the reverse brake passes through the forward clutch and the reverse brake in the radial direction from the inside of the forward clutch and the reverse brake to the temperature sensor.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: October 4, 2016
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takuhiro Sugimoto, Shigeru Ishii, Kazuhiro Miyachi, Takashi Kuwahara
  • Patent number: 9222524
    Abstract: A drive force transmission device includes a clutch operatively interposed between a hub member and a drum member to selectively transmit drive power therebetween. A first rotating shaft member is coupled to the hub member to rotate with the hub member. A second rotating shaft member is coupled to a separating wall part of the drum member to rotate with the drum member. A support member rotatably supports the second rotating shaft member via a bearing. The support member includes a restriction part that restricts axial movement of an outer race of the bearing. A bottom portion of the separating wall part is a radially offset towards the bearing space with respect to a top portion of the separating wall so that the bottom portion radial overlaps with the restriction part as viewed perpendicular to a rotational axis of the drum member.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: December 29, 2015
    Assignees: Nissan Motor Co., Ltd., JATCO Ltd
    Inventors: Katsuyuki Saito, Kazuhiro Miyachi, Kazutoshi Shimozono, Kiyoto Tamura, Yutaka Yoshikawa, Akihisa Kawai
  • Publication number: 20150369340
    Abstract: A drive power transmission device is provided that either disengages a first friction engagement element or a second friction engagement element when the other is engaged. The drive power transmission device detects the temperature of lubricating oil flowing in each friction engagement element using a temperature sensor. The drive power transmission device selectively disengages either a forward clutch or a reverse brake disengages when the other is engaged. The forward clutch and the reverse brake overlap axially, and are layered radially in an inner/outer arrangement. The temperature sensor is positioned at the periphery of the forward clutch and the reverse brake. A lubricating oil pathway is formed such that lubricating oil for cooling the forward clutch and the reverse brake passes through the forward clutch and the reverse brake in the radial direction from the inside of the forward clutch and the reverse brake to the temperature sensor.
    Type: Application
    Filed: December 25, 2013
    Publication date: December 24, 2015
    Applicant: NISSAN MOTOR Co., Ltd.,
    Inventors: Takuhiro SUGIMOTO, Shigeru ISHII, Kazuhiro MIYACHI, Takashi KUWAHARA
  • Publication number: 20140262674
    Abstract: A drive force transmission device includes a clutch operatively interposed between a hub member and a drum member to selectively transmit drive power therebetween. A first rotating shaft member is coupled to the hub member to rotate with the hub member. A second rotating shaft member is coupled to a separating wall part of the drum member to rotate with the drum member. A support member rotatably supports the second rotating shaft member via a bearing. The support member includes a restriction part that restricts axial movement of an outer race of the bearing. A bottom portion of the separating wall part is a radially offset towards the bearing space with respect to a top portion of the separating wall so that the bottom portion radial overlaps with the restriction part as viewed perpendicular to a rotational axis of the drum member.
    Type: Application
    Filed: November 5, 2012
    Publication date: September 18, 2014
    Inventors: Katsuyuki Saito, Kazuhiro Miyachi, Kazutoshi Shimozono, Kiyoto Tamura, Yutaka Yoshikawa, Akihisa Kawai
  • Publication number: 20140230593
    Abstract: A drive force transmission device is provided with a motor shaft, a transmission input shaft, a drive side sprocket, a resolver rotor and a cylindrical resolver retainer. The motor shaft is configured to be connected to a motor rotor of a motor. The driving force transmission shaft is coaxially connected to the motor shaft. The oil pump sprocket is provided on the driving force transmission shaft for rotating an oil pump. The resolver rotor is disposed on the motor shaft adjacent the oil pump sprocket for detecting a rotational position of the motor. The cylindrical resolver retainer is coaxially disposed on the motor shaft to fix the resolver rotor to the motor shaft. The resolver retainer includes a stopper that forms an axial positioning surface for the resolver rotor by contacting an end portion of the motor shaft, and an axial position limiting surface of the oil pump sprocket.
    Type: Application
    Filed: October 31, 2012
    Publication date: August 21, 2014
    Applicant: Nissan Motor Co, Ltd.
    Inventors: Yasuo Takagi, Kazuhiro Miyachi