Patents by Inventor Junich Ishii

Junich Ishii 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).

  • Driving force control system for a vehicle
    Patent number: 6090011
    Abstract: A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: July 18, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Toshimichi Minowa, Hiroshi Kimura, Junich Ishii, Takashi Shiraishi, Naoyuki Ozaki
  • Driving force control system using target driving torque, gear ratio and inertial torque to determine engine torque during shifting
    Patent number: 6077191
    Abstract: A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: June 20, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Toshimichi Minowa, Hiroshi Kimura, Junich Ishii, Takashi Shiraishi, Naoyuki Ozaki
  • Axle torque estimating system for a vehicle equipped with an automatic transmission system, and axle torque controlling system
    Patent number: 5792021
    Abstract: A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: August 11, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Toshimichi Minowa, Hiroshi Kimura, Junich Ishii, Takashi Shiraishi, Naoyuki Ozaki
  • Driving force control system for a vehicle
    Patent number: 5779594
    Abstract: A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: July 14, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Toshimichi Minowa, Hiroshi Kimura, Junich Ishii, Takashi Shiraishi, Naoyuki Ozaki
  • Driving force control system for a vehicle
    Patent number: 5776030
    Abstract: A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: July 7, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Toshimichi Minowa, Hiroshi Kimura, Junich Ishii, Takashi Shiraishi, Naoyuki Ozaki
  • Driving force control system for a vehicle
    Patent number: 5772555
    Abstract: A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: June 30, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Toshimichi Minowa, Hiroshi Kimura, Junich Ishii, Takashi Shiraishi, Naoyuki Ozaki
  • Driving force control system for a vehicle
    Patent number: 5573476
    Abstract: A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, having an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 12, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Toshimichi Minowa, Hiroshi Kimura, Junich Ishii, Takashi Shiraishi, Naoyuki Ozaki