Patents by Inventor Yoshitaka NISHIIKE

Yoshitaka NISHIIKE 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: 7753156
    Abstract: A control system for a vehicle includes an ECU, a front wheel speed sensor, a rear wheel speed sensor, and an engine. The ECU detects an actual slip speed and an actual slip ratio of a rear wheel on the basis of respective detected values of a front wheel speed sensor and a rear wheel speed sensor. Slip speed traction control is started when the actual slip speed exceeds a threshold value of a slip speed when a vehicle is at a low speed, and slip ratio traction control is started when the actual slip ratio exceeds a threshold value of a slip ratio when it is at an intermediate or high speed. An output of the engine is adjusted depending on the actual slip speed in the slip speed traction control, while being adjusted depending on the actual slip ratio in the slip ratio traction control.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: July 13, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yoshinobu Nishiike, Yoshitaka Nishiike, legal representative, Hiroto Watanabe
  • Patent number: 7599779
    Abstract: In an acceleration estimation device for estimating acceleration of a vehicle, a Karman filter for constant speed estimates x-direction acceleration offset and z-direction acceleration offset when a motorcycle is stopped and is traveling at a constant speed. An offset corrector corrects an x-direction acceleration and a z-direction acceleration on the basis of an x-direction acceleration offset estimated value and a z-direction acceleration offset estimated value when the motorcycle is accelerated and decelerated. A Karman filter for acceleration/deceleration estimates the pitch angle of a vehicle body on the basis of a wheel speed and the corrected x-direction acceleration and z-direction acceleration when the motorcycle is accelerated and decelerated. An acceleration corrector obtains an X-direction acceleration and a Z-direction acceleration on the basis of the estimated pitch angle and the corrected x-direction acceleration and z-direction acceleration.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: October 6, 2009
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiroto Watanabe, Yoshinobu Nishiike, Yoshitaka Nishiike, legal representative
  • Publication number: 20080105479
    Abstract: A control system for a vehicle includes an ECU, a front wheel speed sensor, a rear wheel speed sensor, and an engine. The ECU detects an actual slip speed and an actual slip ratio of a rear wheel on the basis of respective detected values of a front wheel speed sensor and a rear wheel speed sensor. Slip speed traction control is started when the actual slip speed exceeds a threshold value of a slip speed when a vehicle is at a low speed, and slip ratio traction control is started when the actual slip ratio exceeds a threshold value of a slip ratio when it is at an intermediate or high speed. An output of the engine is adjusted depending on the actual slip speed in the slip speed traction control, while being adjusted depending on the actual slip ratio in the slip ratio traction control.
    Type: Application
    Filed: October 5, 2007
    Publication date: May 8, 2008
    Applicant: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yoshinobu Nishiike, Yoshitaka Nishiike, Hiroto Watanabe
  • Patent number: 7292925
    Abstract: In an acceleration estimation device for estimating acceleration of a vehicle, a Karman filter for a constant speed estimates x-direction acceleration offset and z-direction acceleration offset when a motorcycle is stopped and is traveling at constant speed. An offset storage stores an x-direction acceleration offset estimated value and a z-direction acceleration offset estimated value. An offset corrector corrects an x-direction acceleration and a z-direction acceleration on the basis of the x-direction acceleration offset estimated value and the z-direction acceleration offset estimated value when the motorcycle is accelerated and decelerated. A Karman filter for acceleration/deceleration estimates the pitch angle of a vehicle body when the motorcycle is accelerated and decelerated. An acceleration corrector obtains an X-direction acceleration and a Z-direction acceleration on the basis of the estimated pitch angle.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: November 6, 2007
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiroto Watanabe, Yoshitaka Nishiike, legal representative, Yoshinobu Nishiike, deceased
  • Publication number: 20070213899
    Abstract: In an acceleration estimation device for estimating acceleration of a vehicle, a Karman filter for constant speed estimates x-direction acceleration offset and z-direction acceleration offset when a motorcycle is stopped and is traveling at a constant speed. An offset corrector corrects an x-direction acceleration and a z-direction acceleration on the basis of an x-direction acceleration offset estimated value and a z-direction acceleration offset estimated value when the motorcycle is accelerated and decelerated. A Karman filter for acceleration/deceleration estimates the pitch angle of a vehicle body on the basis of a wheel speed and the corrected x-direction acceleration and z-direction acceleration when the motorcycle is accelerated and decelerated. An acceleration corrector obtains an X-direction acceleration and a Z-direction acceleration on the basis of the estimated pitch angle and the corrected x-direction acceleration and z-direction acceleration.
    Type: Application
    Filed: March 5, 2007
    Publication date: September 13, 2007
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Hiroto WATANABE, Yoshinobu NISHIIKE, Yoshitaka NISHIIKE
  • Publication number: 20070213904
    Abstract: In an acceleration estimation device for estimating acceleration of a vehicle, a Karman filter for a constant speed estimates x-direction acceleration offset and z-direction acceleration offset when a motorcycle is stopped and is traveling at constant speed. An offset storage stores an x-direction acceleration offset estimated value and a z-direction acceleration offset estimated value. An offset corrector corrects an x-direction acceleration and a z-direction acceleration on the basis of the x-direction acceleration offset estimated value and the z-direction acceleration offset estimated value when the motorcycle is accelerated and decelerated. A Karman filter for acceleration/deceleration estimates the pitch angle of a vehicle body when the motorcycle is accelerated and decelerated. An acceleration corrector obtains an X-direction acceleration and a Z-direction acceleration on the basis of the estimated pitch angle.
    Type: Application
    Filed: March 5, 2007
    Publication date: September 13, 2007
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Hiroto WATANABE, Yoshinobu NISHIIKE, Yoshitaka NISHIIKE