Patents by Inventor Yuta Shima

Yuta Shima 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).

  • Control device for spark ignition type internal combustion engine
    Patent number: 9989032
    Abstract: To alleviate or eliminate a problem of unburned fuel discharged to the outside of a cylinder in a case in which an air fuel mixture is insufficiently combusted in a combustion chamber. During the expansion stroke in which a high voltage is applied to an ignition plug via an ignition coil, and a spark discharge is caused to occur at the ignition plug, thereby the air fuel mixture in the combustion chamber is ignited and combusted, in a case in which deterioration of combustion state is detected, a microwave electric field is created in the combustion chamber prior to an opening timing of an exhaust valve at an end stage of the expansion stroke, thereby plasma is generated and enlarged in the combustion chamber.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: June 5, 2018
    Inventors: Katsumi Uchida, Yuta Shima, Hiroaki Oi, Akira Nakajima, Takeshi Serizawa, Yuji Ikeda
  • CONTROL DEVICE FOR SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE
    Publication number: 20150027395
    Abstract: To alleviate or eliminate a problem of unburned fuel discharged to the outside of a cylinder in a case in which an air fuel mixture is insufficiently combusted in a combustion chamber. During the expansion stroke in which a high voltage is applied to an ignition plug via an ignition coil, and a spark discharge is caused to occur at the ignition plug, thereby the air fuel mixture in the combustion chamber is ignited and combusted, in a case in which deterioration of combustion state is detected, a microwave electric field is created in the combustion chamber prior to an opening timing of an exhaust valve at an end stage of the expansion stroke, thereby plasma is generated and enlarged in the combustion chamber.
    Type: Application
    Filed: October 30, 2012
    Publication date: January 29, 2015
    Applicants: DAIHATSU MOTOR CO., LTD., IMAGINEERING, INC.
    Inventors: Katsumi Uchida, Yuta Shima, Hiroaki Oi, Akira Nakajima, Takeshi Serizawa, Yuji Ikeda