Patents by Inventor Motoshi Ishikawa
Motoshi Ishikawa 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).
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Patent number: 6603278Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a drive control circuit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit.Type: GrantFiled: January 8, 2002Date of Patent: August 5, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Oshima, Yusuke Tatara, Motoshi Ishikawa, Yutaka Tamagawa, Tetsu Sugiyama, Toru Yano
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Publication number: 20020063540Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a drive control circuit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit.Type: ApplicationFiled: January 8, 2002Publication date: May 30, 2002Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Yoshikazu Oshima, Yusuke Tatara, Motoshi Ishikawa, Yutaka Tamagawa, Tetsu Sugiyama, Toru Yano
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Patent number: 6369531Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a drive control circuit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit.Type: GrantFiled: October 4, 2000Date of Patent: April 9, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Oshima, Yusuke Tatara, Motoshi Ishikawa, Yutaka Tamagawa, Tetsu Sugiyama, Toru Yano
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Patent number: 6330498Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle, and electric energy storage means for supplying electric energy to the electric motor. The control system has an electric motor control unit which calculates an output power of the electric motor depending on an operating status of the hybrid vehicle and assists the engine based on the calculated output power of the electric motor. The electric motor control unit also reduces the output power of the electric motor when the rotational speed of the engine or the speed of the hybrid vehicle exceeds a predetermined value.Type: GrantFiled: November 24, 1998Date of Patent: December 11, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yutaka Tamagawa, Motoshi Ishikawa, Toru Yano, Yoshikazu Oshima
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Patent number: 6157885Abstract: A system for controlling motive force of a vehicle having an engine and an automatic transmission connected to the engine to transmit engine torque to a drive shaft of the vehicle, wherein a control mode is selected from among a plurality of predetermined control modes in response to a calculated desired motive force and vehicle speed such that the fuel economy is enhanced and engine torque and speed (gear) ratio are controlled in response thereto. Moreover, the desired motive force is calculated by obtaining a difference between the wide-open-throttle motive force and the full-closed-throttle motive force and by multiplying the difference by a calculated ratio of motive force. Furthermore, the calculated desired output of the engine and the desired gear ratio are controlled such that the desired motive force is generated when the desired motive force is discriminated to be achievable.Type: GrantFiled: December 29, 1998Date of Patent: December 5, 2000Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinichi Sakaguchi, Eisuke Kimura, Hiroyuki Abe, Makoto Kishida, Motoshi Ishikawa, Kazuhisa Yamamoto
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Patent number: 6140780Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a power drive unit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit.Type: GrantFiled: September 16, 1998Date of Patent: October 31, 2000Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Oshima, Yusuke Tatara, Motoshi Ishikawa, Yutaka Tamagawa, Tetsu Sugiyama, Toru Yano
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Patent number: 6027425Abstract: A system for controlling motive force of a vehicle having an engine and a continuously variable automatic transmission connected to the engine to transmit engine torque to a drive shaft of the vehicle. In the system, a desired motive force is calculated or determined from the detected accelerator (pedal) position and vehicle speed, and based on the determined motive force a desired engine speed, more specifically a drive shaft speed of the transmission, is calculated or determined. Then inertia torque acting on the vehicle is calculated or determined based on at least the determined speed and detected speed, and a desired throttle opening is corrected by the determined inertia torque when the vehicle accelerates or decelerates. With the arrangement, the vehicle response delay due to the inertia torque is adjusted and hence, drivability and fuel economy performance are enhanced.Type: GrantFiled: December 29, 1998Date of Patent: February 22, 2000Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinichi Sakaguchi, Eisuke Kimura, Hiroyuki Abe, Makoto Kishida, Motoshi Ishikawa, Kazuhisa Yamamoto, Akihiro Yamamoto
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Patent number: 6013992Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle with electric energy and converting kinetic energy of the drive axle into electric energy, and an electric energy storage unit for supplying electric energy to the electric motor and storing electric energy outputted by the electric motor. The control system has a deceleration demand sensor for detecting a deceleration demand for the hybrid vehicle, a braking sensor for detecting whether the hybrid vehicle is braked or not, and a decelerating regenerative control unit for causing the electric motor to regenerate electric energy when the deceleration demand sensor detects the deceleration demand.Type: GrantFiled: February 1, 1999Date of Patent: January 11, 2000Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Motoshi Ishikawa, Yutaka Tamagawa, Toru Yano
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Patent number: 5939848Abstract: A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle, and electric energy storage unit for supplying electric energy to the electric motor.Type: GrantFiled: September 16, 1998Date of Patent: August 17, 1999Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Toru Yano, Yutaka Tamagawa, Yoshikazu Oshima, Motoshi Ishikawa