Patents by Inventor Kazushi Shirasawa

Kazushi Shirasawa 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: 10486489
    Abstract: A vehicle air-conditioning system capable of reducing energy consumed during traveling while preventing a significant uncomfortable feeling of a user. An inside-vehicle environment predicting unit calculates, by using inside-vehicle sensor information and outside-vehicle sensor information being output from an environmental sensor device and a predicted travel time acquired by a predicted travel information acquisition unit, at least one predicted environmental characteristic which is an environmental characteristic inside a vehicle after a predicted travel time on an assumption that an air-conditioning device is operated in each of at least one candidate mode which has lower intensity than intensity of a selection mode among a plurality of operation modes. A mode controller resets the selection mode to one of the at least one candidate mode, in which the predicted environmental characteristic being within the allowable range is calculated by the inside-vehicle environment predicting unit.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: November 26, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Igarashi, Masahiko Ikawa, Yuko Ota, Kazushi Shirasawa, Takashi Irie
  • Publication number: 20180361823
    Abstract: An object of the present invention is to provide a vehicle air-conditioning system capable of reducing energy consumed during traveling while preventing a significant uncomfortable feeling of a user. An inside-vehicle environment predicting unit (51) calculates, by using inside-vehicle sensor information and outside-vehicle sensor information being output from an environmental sensor device (4) and a predicted travel time acquired by a predicted travel information acquisition unit (53), at least one predicted environmental characteristic which is an environmental characteristic inside a vehicle (900) after a predicted travel time on an assumption that an air-conditioning device (3) is operated in each of at least one candidate mode which has lower intensity than intensity of a selection mode among a plurality of operation modes.
    Type: Application
    Filed: June 15, 2016
    Publication date: December 20, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuji IGARASHI, Masahiko IKAWA, Yuko OTA, Kazushi SHIRASAWA, Takashi IRIE
  • Patent number: 9963042
    Abstract: A method, for use in a charging system including a vehicle in which a battery is installed, a charging facility, and an information terminal, for changing a charging schedule of the battery after creating the charging schedule without re-inserting a charging cable includes: receiving a request for a change of the charging schedule; acquiring, from the charging facility, a charging parameter applied in a case where the charging schedule is changed in response to the request for the change of the charging schedule as received; and creating a charging schedule after the change using the charging parameter acquired from the charging facility.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: May 8, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuji Igarashi, Yukio Goto, Takanori Matsunaga, Kazushi Shirasawa
  • Patent number: 9707856
    Abstract: A vehicle power management device managing: a vehicle path information generation device generating a vehicle travel path; a drive assembly consuming power to drive the vehicle; a power generator; an electrical load device group; a high-voltage storage device storing power for driving the vehicle; a low-voltage storage device storing power for operating the electrical load device group; and a DC voltage conversion and output device converting voltage of power stored in the high-voltage storage device to generate DC voltage for operating the electrical load device group, and outputting the DC voltage, and controlling electric energy flow in the vehicle. The vehicle power management device controls output of the DC voltage conversion and output device so that a filling rate of the low-voltage storage device is between lower and upper limits of a range in which a charge and discharge speed is equal to or higher than a predetermined value.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: July 18, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Igarashi, Katsuya Kawai, Yukio Goto, Masahiko Tanimoto, Yoshito Nishita, Kazushi Shirasawa, Takanori Matsunaga, Akinobu Sugiyama
  • Publication number: 20160016484
    Abstract: A vehicle power management device managing: a vehicle path information generation device generating a vehicle travel path: a drive assembly consuming power to drive the vehicle; a power generator; an electrical load device group; a high-voltage storage device storing power for driving the vehicle; a low-voltage storage device storing power for operating the electrical load device group; and a DC voltage conversion and output device converting voltage of power stored in the high-voltage storage device to generate DC voltage for operating the electrical load device group, and outputting the DC voltage, and controlling electric energy flow in the vehicle. The vehicle power management device controls output of the DC voltage conversion and output device so that a filling rate of the low-voltage storage device is between lower and upper limits of a range in which a charge and discharge speed is equal to or higher than a predetermined value.
    Type: Application
    Filed: November 8, 2013
    Publication date: January 21, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuji IGARASHI, Katsuya KAWAI, Yukio GOTO, Masahiko TANIMOTO, Yoshito NISHITA, Kazushi SHIRASAWA, Takanori MATSUNAGA, Akinobu SUGIYAMA
  • Patent number: 9225564
    Abstract: An on-board power line communication system that performs power line communication during charging and discharging of a battery prevents electromagnetic wave leakage from a power line from interfering with other on-board devices. A vehicle includes a PLC communication device that performs PLC communication using a charging cable that is connected to a battery, and an interference suppressor that prevents electromagnetic wave leakage from the charging cable, which accompanies PLC communication, from interfering with the operations of an on-board electronic device. The interference suppressor reduces electromagnetic wave leakage from the charging cable by reducing the output frequency of the PLC communication device or the value of current flowing through the charging cable while the on-board electronic device is performing a specific operation that will be affected by interference from PLC communication.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: December 29, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Igarashi, Takashi Tamada, Yoshitsugu Sawa, Kazushi Shirasawa, Takanori Matsunaga, Hiroyuki Kumazawa
  • Patent number: 9197463
    Abstract: An on-board power line communication system that performs power line communication during charging and discharging of a battery prevents electromagnetic wave leakage from a power line from interfering with other on-board devices. A vehicle includes a PLC communication device that performs PLC communication using a charging cable that is connected to a battery, and an interference suppressor that prevents electromagnetic wave leakage from the charging cable, which accompanies PLC communication, from interfering with the operations of an on-board electronic device. The interference suppressor reduces electromagnetic wave leakage from the charging cable by reducing the output frequency of the PLC communication device or the value of current flowing through the charging cable while the on-board electronic device is performing a specific operation that will be affected by interference from PLC communication.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 24, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Igarashi, Takashi Tamada, Yoshitsugu Sawa, Kazushi Shirasawa, Takanori Matsunaga, Hiroyuki Kumazawa
  • Patent number: 9184792
    Abstract: In a charging communication system in which a charging control device performs communication between an electric vehicle and a charging equipment, the electric vehicle is equipped with a first communication device and a second communication device both configured to communicate with the charging equipment by using the same signal line in the charging cable; and a signal line connection device configured to switch connection/disconnection between the second communication device and the signal line. The charging control device, which controls a battery on the electric vehicle, calculates an amount of change in a signal line voltage between before and after the signal line connection device connects the second communication device to the signal line, and the charging control device causes, when the amount of change does not fall within a predetermined allowable range, the signal line connection device to disconnect the second communication device from the signal line.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: November 10, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Igarashi, Takashi Tamada, Yoichi Okubo, Takanori Matsunaga, Kazushi Shirasawa, Hiroyuki Kumazawa
  • Publication number: 20150188739
    Abstract: An on-board power line communication system that performs power line communication during charging and discharging of a battery prevents electromagnetic wave leakage from a power line from interfering with other on-board devices. A vehicle includes a PLC communication device that performs PLC communication using a charging cable that is connected to a battery, and an interference suppressor that prevents electromagnetic wave leakage from the charging cable, which accompanies PLC communication, from interfering with the operations of an on-board electronic device. The interference suppressor reduces electromagnetic wave leakage from the charging cable by reducing the output frequency of the PLC communication device or the value of current flowing through the charging cable while the on-board electronic device is performing a specific operation that will be affected by interference from PLC communication.
    Type: Application
    Filed: June 21, 2012
    Publication date: July 2, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuji Igarashi, Takashi Tamada, Yoshitsugu Sawa, Kazushi Shirasawa, Takanori Matsunaga, Hiroyuki Kumazawa
  • Publication number: 20150043662
    Abstract: In a charging communication system in which a charging control device performs communication between an electric vehicle and a charging equipment, the electric vehicle is equipped with a first communication device and a second communication device both configured to communicate with the charging equipment by using the same signal line in the charging cable; and a signal line connection device configured to switch connection/disconnection between the second communication device and the signal line. The charging control device, which controls a battery on the electric vehicle, calculates an amount of change in a signal line voltage between before and after the signal line connection device connects the second communication device to the signal line, and the charging control device causes, when the amount of change does not fall within a predetermined allowable range, the signal line connection device to disconnect the second communication device from the signal line.
    Type: Application
    Filed: April 1, 2013
    Publication date: February 12, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuji Igarashi, Takashi Tamada, Yoichi Okubo, Takanori Matsunaga, Kazushi Shirasawa, Hiroyuki Kumazawa
  • Patent number: 6763908
    Abstract: A steering device for a vehicle has: a target wheel steering angle production unit for producing a target wheel steering angle on the basis of a detected steering wheel angle; a wheel steering angle control unit for controlling steering angles of wheels turned for steering so that a detected wheel steering angle and a target wheel steering angle coincide with each other; a target reaction production unit for producing a target reaction on the basis of the steering wheel angle; a first reaction torque control unit for controlling a reaction torque produced in the steering wheel by driving a reaction control mechanism so that the reaction torque and the target reaction coincide with each other; and a second reaction torque control unit for compensating an output from the wheel steering angle control unit so that the reaction and the target reaction torque coincide with each other.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: July 20, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kenji Ogawa, Kazushi Shirasawa
  • Patent number: 6705424
    Abstract: To provide a steering system that may simultaneously allow manual steering and automatic steering, and in addition ensure the same steering feeling as normal even if the manual and automatic steering are simultaneously performed, there is provided a steering system including: a target reactive force generating unit for generating a target value of a reactive torque; a reactive torque detecting unit for detecting a reactive torque; a reactive torque controlling unit for controlling a drive torque; a steerable vehicle wheel controlling mechanism for controlling a steering direction of steerable vehicle wheels; an actual steering detecting unit for detecting the actual steering angle of the steerable vehicle wheels; a target steering angle generating unit for generating a target value of the steering angle of the steerable vehicle wheels; and an actual steering angle controlling unit for driving and controlling the steerable vehicle wheel controlling mechanism.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: March 16, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kenji Ogawa, Kazushi Shirasawa
  • Publication number: 20030150666
    Abstract: A steering device for a vehicle has: a target wheel steering angle production unit for producing a target wheel steering angle on the basis of a detected steering wheel angle; a wheel steering angle control unit for controlling steering angles of wheels turned for steering so that a detected wheel steering angle and a target wheel steering angle coincide with each other; a target reaction production unit for producing a target reaction on the basis of the steering wheel angle; a first reaction torque control unit for controlling a reaction torque produced in the steering wheel by driving a reaction control mechanism so that the reaction torque and the target reaction coincide with each other; and a second reaction torque control unit for compensating an output from the wheel steering angle control unit so that the reaction and the target reaction torque coincide with each other.
    Type: Application
    Filed: November 22, 2002
    Publication date: August 14, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Kenji Ogawa, Kazushi Shirasawa
  • Publication number: 20030094329
    Abstract: To provide a steering system that may simultaneously allow manual steering and automatic steering, and in addition ensure the same steering feeling as normal even if the manual and automatic steering are simultaneously performed, there is provided a steering system including: a target reactive force generating unit for generating a target value of a reactive torque; a reactive torque detecting unit for detecting a reactive torque; a reactive torque controlling unit for controlling a drive torque; a steerable vehicle wheel controlling mechanism for controlling a steering direction of steerable vehicle wheels; an actual steering detecting unit for detecting the actual steering angle of the steerable vehicle wheels; a target steering angle generating unit for generating a target value of the steering angle of the steerable vehicle wheels; and an actual steering angle controlling unit for driving and controlling the steerable vehicle wheel controlling mechanism.
    Type: Application
    Filed: May 2, 2002
    Publication date: May 22, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Kenji Ogawa, Kazushi Shirasawa