Patents by Inventor Tomiji Ohwada

Tomiji Ohwada 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: 5670830
    Abstract: A fuel use limiter-equipped hybrid electric car has a battery unit chargeable by an external charger, an electric drive motor capable of driving wheels by electric power from the battery unit, an internal combustion engine for driving a generator to supply electric power to the electric drive motor, and a controller for controlling operations of the electric drive motor and internal combustion engine. The hybrid electric car is further provided with a fuel-use-state detector for detecting a change in a parameter, which change corresponds to a quantity of fuel used by the internal combustion engine since charging of the battery unit by the external charger. The controller limits at least one of an output of the electric drive motor and that of internal combustion engine when from results of a detection by the fuel-use-state detector, the change in the parameter is found to have reached a predetermined value.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: September 23, 1997
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hisamitsu Koga, Naotake Kumagai, Tomiji Ohwada, Nobuya Furukawa, Masaaki Kato, Nobuyuki Kawamura
  • Patent number: 5664635
    Abstract: A hybrid electric vehicle is equipped with a combustion engine for driving a generator or a combustion engine for driving vehicle wheels. The hybrid electric vehicle has a battery unit, an electric drive motor, the combustion engine directly or indirectly usable for driving wheels, and a controller for controlling operations of the electric drive motor and the combustion engine. The hybrid electric vehicle is further provided with a microcomputer for determining whether or not the battery unit meets a predetermined specification. When the battery unit is determined as failing to meet the predetermined specification by the microcomputer, the controller limits an output of the electric drive motor or the combustion engine.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: September 9, 1997
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hisamitsu Koga, Naotake Kumagai, Tomiji Ohwada, Nobuya Furukawa, Masaaki Kato, Nobuyuki Kawamura