Patents by Inventor Kennichirou Murakami

Kennichirou Murakami 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).

  • Vehicle drive system
    Patent number: 6574541
    Abstract: A controller 10 calculates a target drive force based on an accelerator pedal operation amount and a vehicle speed. A delay speed ratio which varies with a delay with respect to the actual speed ratio is calculated by applying a delay process on the actual speed ratio of the transmission 2. While the actual speed ratio is undergoing variation, a target engine torque is calculated by dividing the target drive force by the delay speed ratio. The torque of the engine 1 is controlled so that the torque of the engine 1 coincides with the target engine torque. In this manner, it is possible to suppress shift shocks by eliminating sharp variation of the target engine torque during actual speed change.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: June 3, 2003
    Assignee: Nissian Motor Co., Ltd.
    Inventors: Shusaku Katakura, Masahiro Iriyama, Osamu Ushikubo, Hideki Hyoudou, Kennichirou Murakami
  • Vehicle drive system
    Publication number: 20020082759
    Abstract: A controller 10 calculates a target drive force based on an accelerator pedal operation amount and a vehicle speed. A delay speed ratio which varies with a delay with respect to the actual speed ratio is calculated by applying a delay process on the actual speed ratio of the transmission 2. While the actual speed ratio is undergoing variation, a target engine torque is calculated by dividing the target drive force by the delay speed ratio. The torque of the engine 1 is controlled so that the torque of the engine 1 coincides with the target engine torque. In this manner, it is possible to suppress shift shocks by eliminating sharp variation of the target engine torque during actual speed change.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 27, 2002
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Shusaku Katakura, Masahiro Iriyama, Osamu Ushikubo, Hideki Hyoudou, Kennichirou Murakami