Patents by Inventor Ryuichi Murase

Ryuichi Murase 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).

  • Shift control apparatus for continuously variable transmission
    Patent number: 6244986
    Abstract: A shift control apparatus of a continuously variable transmission for a vehicle comprises sensors for detecting operating conditions of the transmission and a motor connected to the transmission. A controller of the shift control apparatus stores different shift maps and employs one of them according to a driver's command or vehicle driving condition. The controller decides a target value of an input rotation speed of the transmission from an output rotation speed of the transmission and the load condition of a motor on the basis of the shift map and continuously changes a gear ratio of the transmission so that the transmission input rotation speed is adjusted to the target value. The controller can change the rate of the shift speed indicative of a time period of a gear ratio changing operation according to a driver's command.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: June 12, 2001
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Haruhito Mori, Yuusuke Minagawa, Ryuichi Murase
  • Shift control apparatus for continuously variable transmission
    Patent number: 6019701
    Abstract: A shift control apparatus of a continuously variable transmission for a vehicle comprises sensors for detecting operating conditions of the transmission and a motor connected to the transmission. A controller of the shift control apparatus stores different shift maps and employs one of them according to a driver's command or vehicle driving condition. The controller decides a target value of an input rotation speed of the transmission from an output rotation speed of the transmission and the load condition of a motor on the basis of the shift map and continuously changes a gear ratio of the transmission so that the transmission input rotation speed is adjusted to the target value. The controller can change the rate of the shift speed according to a driver's command.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: February 1, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Haruhito Mori, Yuusuke Minagawa, Ryuichi Murase