Patents by Inventor Ryuu Kai

Ryuu Kai 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).

  • Idle stop control method and control device
    Patent number: 8688359
    Abstract: There is provided an idle stop system that can more quickly restart with small noise in conducting idle stop. In preparation for a restart request during an engine inertial rotation, after a motor is rotated in a state where a starter motor is not coupled to the engine, a pinion is engaged with a ring gear during the motor is subjected to inertial rotation like the engine. In this situation, the rotational speed including future pulsation of the engine is estimated with the use of information on the crank angle, and a pinion pushing timing is controlled so that the pinion and the ring gear contact each other with a given rotational speed difference taking a delay time of a pinion pushing unit into consideration.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: April 1, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroyasu Kuniyoshi, Akira Nishioka, Ryuu Kai, Kenichi Machida, Yoshiaki Nagasawa
  • Idle Stop Control Method and Control Device
    Publication number: 20120035827
    Abstract: There is provided an idle stop system that can more quickly restart with small noise in conducting idle stop. In preparation for a restart request during an engine inertial rotation, after a motor is rotated in a state where a starter motor is not coupled to the engine, a pinion is engaged with a ring gear during the motor is subjected to inertial rotation like the engine. In this situation, the rotational speed including future pulsation of the engine is estimated with the use of information on the crank angle, and a pinion pushing timing is controlled so that the pinion and the ring gear contact each other with a given rotational speed difference taking a delay time of a pinion pushing unit into consideration.
    Type: Application
    Filed: August 2, 2011
    Publication date: February 9, 2012
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroyasu KUNIYOSHI, Akira Nishioka, Ryuu Kai, Kenichi Machida, Yoshiaki Nagasawa