Patents Represented by Attorney, Agent or Law Firm Oliff & Berriedge, PLC
  • Patent number: 6736753
    Abstract: Methods and apparatus for a vehicle drive control apparatus changes in the transfer torque capacity of a power transfer device according to various states of operation with respect to at least one drive power source. The vehicle drive control apparatus includes a power transfer device that has a variable transfer torque capacity and the drive power sources that rotate a drive wheel via the power transfer device. A controller is included that causes a vehicle to selectively run in a variety of run modes that differ in states of operation with respect to at least one of the drive power sources. The controller changes the transfer torque capacity of the power transfer device in accordance with the various run modes. According to the vehicle drive control apparatus, a target oil pressure is raised by a predetermined amount when the mode of run is change, or when the vehicle descends in a direction opposite to a vehicle starting direction at the time of a hill climb start.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: May 18, 2004
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroatsu Endo, Tatsuya Ozeki, Kazumi Hoshiya