Patents by Inventor Masanobu Shinagawa

Masanobu Shinagawa 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: 11408378
    Abstract: An evaporated fuel processing device may include a flow passage through which evaporated fuel generated in a fuel tank flows; a first adsorbent constituted of activated carbon and arranged in the flow passage for adsorbing the evaporated fuel flowing in the flow passage; and a second adsorbent constituted of a porous metal complex and arranged in the flow passage on a downstream side of the first adsorbent for adsorbing the evaporated fuel having passed through the first adsorbent and flowing in the flow passage on the downstream side of the first adsorbent.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: August 9, 2022
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masanobu Shinagawa, Hiroaki Kitanaga, Rina Kondo
  • Publication number: 20220112855
    Abstract: A leakage detector for fuel vapor treatment device is configured to diagnose a leakage of a fuel vapor in a vapor path based on an internal pressure change of the vapor path with the vapor path functioning as a closed space. The leakage detector performs the leakage diagnosis of the vapor path by correcting the effect of the pressure of the fuel vapor with regards to the internal pressure change. The leakage detector comprises a vaporization promoting device and is configured to determine whether the fuel vapor in the gas space of a fuel pump has reached a saturated state.
    Type: Application
    Filed: September 28, 2021
    Publication date: April 14, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mariko KAWASE, Yuya TANIDA, Masanobu SHINAGAWA
  • Publication number: 20220106930
    Abstract: An evaporated fuel processing device may include a flow passage through which evaporated fuel generated in a fuel tank flows; a first adsorbent constituted of activated carbon and arranged in the flow passage for adsorbing the evaporated fuel flowing in the flow passage; and a second adsorbent constituted of a porous metal complex and arranged in the flow passage on a downstream side of the first adsorbent for adsorbing the evaporated fuel having passed through the first adsorbent and flowing in the flow passage on the downstream side of the first adsorbent.
    Type: Application
    Filed: February 6, 2020
    Publication date: April 7, 2022
    Inventors: Masanobu Shinagawa, Hiroaki KITANAGA, Rina KONDO
  • Patent number: 11203992
    Abstract: A vaporized-fuel treating apparatus includes a pump part for controlling a flow of purge gas and a heating part for controlling driving of the pump part and for generating heat. At least a part of the heating part is placed to be exposed in an atmosphere passage. The pump part is either placed in the purge passage or arranged connecting to the purge passage.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: December 21, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masanobu Shinagawa, Yoshihiko Honda, Shota Tsukamoto
  • Patent number: 11118539
    Abstract: In an evaporated fuel treatment apparatus including a bypass passage branching from an atmosphere passage and connected to a canister by detouring around at least one ii and a bypass valve to open and close the bypass passage, a controller holds the bypass valve in a closed state until an integrated purge flow rate reaches a predetermined value after start of purge control, the integrated purge flow rate being an integrated value of flow rate of purge gas flowing through a purge passage. When the integrated purge flow rate reaches the predetermined value, the controller turns the bypass valve to an open state.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: September 14, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yoshikazu Miyabe, Masanobu Shinagawa
  • Publication number: 20210270213
    Abstract: A leakage diagnosis device is configured to detect leakage from a fuel vapor processing apparatus based on the internal pressure thereof. The fuel vapor processing apparatus includes a fuel tank and a canister in fluid communication with each other via a vapor passage. The leakage diagnosis device includes a negative pressure generator configured to generate a negative pressure therein to move gas from the canister to the fuel tank via a bypass passage. The vapor passage has an electrically controlled closing valve and a first mechanical check valve that are arranged in parallel. The first mechanical check valve is configured to be opened without electrical control to allow the fluid flow from the fuel tank to the canister. The bypass passage has a second mechanical check valve configured to be opened without electrical control to allow the fluid flow from the canister to the fuel tank.
    Type: Application
    Filed: February 21, 2021
    Publication date: September 2, 2021
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Naohito BUSEKI, Masanobu SHINAGAWA
  • Patent number: 10941718
    Abstract: An evaporated fuel processing apparatus preventing evaporated fuel from being discharged out of a canister when residual purge gas is made to return to the canister and processed is provided. In the apparatus, an ECU performs residual purge gas processing operation of returning the residual purge gas into the canister and processing during halt of purge control. This operation includes a residual purge gas pressure-feeding process of pressure-feeding the residual purge gas with the air into the canister by the purge pump in a state in which the atmospheric passage is shut off and the purge passage and the second bypass passages are opened and an air discharge process of discharging the air in the canister outside via the atmospheric passage by opening the atmospheric passage while the purge passage and the second bypass passage are shut off.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: March 9, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masanobu Shinagawa, Yoshihiko Honda, Hiroyuki Takahashi
  • Publication number: 20210062739
    Abstract: An evaporated fuel treatment apparatus includes a partition wall for dividing the inside of a canister into a first region located close to a purge passage and a fuel tank and a second region located close to an atmosphere passage, an electromagnetic valve provided in the partition wall and configured to open and close between the first and second regions, a small hole provided in the partition wall to release the pressure between the first and second regions, and a determination unit for performing a leak determination of the apparatus and a failure determination of a purge valve and the electromagnetic valve based on behaviors of the internal pressure of the canister according to opening and closing operations of the electromagnetic valve.
    Type: Application
    Filed: August 11, 2020
    Publication date: March 4, 2021
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masanobu Shinagawa, Yoshikazu Miyabe
  • Publication number: 20210040920
    Abstract: In an evaporated fuel treatment apparatus including a bypass passage branching from an atmosphere passage and connected to a canister by detouring around at least one ii and a bypass valve to open and close the bypass passage, a controller holds the bypass valve in a closed state until an integrated purge flow rate reaches a predetermined value after start of purge control, the integrated purge flow rate being an integrated value of flow rate of purge gas flowing through a purge passage. When the integrated purge flow rate reaches the predetermined value, the controller turns the bypass valve to an open state.
    Type: Application
    Filed: July 14, 2020
    Publication date: February 11, 2021
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yoshikazu MIYABE, Masanobu SHINAGAWA
  • Publication number: 20200318579
    Abstract: A canister includes a vapor port leading to a fuel tank, an atmospheric port leading to the atmosphere, a first purge port leading to a first purge passage, and a second purge port leading to a second purge passage. The vapor port is located farther from the second purge port than the first purge port.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 8, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yoshihiko HONDA, Masanobu SHINAGAWA, Hiroyuki TAKAHASHI
  • Publication number: 20200224611
    Abstract: An evaporated fuel treatment apparatus includes a canister for collecting vapor, a vapor passage for introducing the vapor from a fuel tank to the canister, a purge passage for introducing the vapor from the canister to an intake passage, an atmosphere passage for introducing atmospheric air into the canister, a purge pump provided in the atmosphere passage to pressure feed the vapor to the intake passage, a bypass atmosphere passage branching from the atmosphere passage downstream of the purge pump, an atmosphere check valve for opening/closing the atmosphere passage between a branch portion of the bypass passage and the purge pump, and an atmosphere opening/closing valve for opening/closing the bypass atmosphere passage. During operation of the purge pump, the atmosphere check valve is opened and the atmosphere opening/closing valve is closed. During non-operation of the purge pump, the atmosphere check valve is closed and the atmosphere opening/closing valve is opened.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 16, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yoshihiko HONDA, Masanobu SHINAGAWA, Takanori AKIYAMA
  • Publication number: 20200158037
    Abstract: An evaporated fuel processing apparatus preventing evaporated fuel from being discharged out of a canister when residual purge gas is made to return to the canister and processed is provided. In the apparatus, an ECU performs residual purge gas processing operation of returning the residual purge gas into the canister and processing during halt of purge control. This operation includes a residual purge gas pressure-feeding process of pressure-feeding the residual purge gas with the air into the canister by the purge pump in a state in which the atmospheric passage is shut off and the purge passage and the second bypass passages are opened and an air discharge process of discharging the air in the canister outside via the atmospheric passage by opening the atmospheric passage while the purge passage and the second bypass passage are shut off.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 21, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masanobu SHINAGAWA, Yoshihiko HONDA, Hiroyuki TAKAHASHI
  • Publication number: 20200018247
    Abstract: A vaporized-fuel treating apparatus includes a pump part for controlling a flow of purge gas and a heating part for controlling driving of the pump part and for generating heat. At least a part of the heating part is placed to be exposed in an atmosphere passage. The pump part is either placed in the purge passage or arranged connecting to the purge passage.
    Type: Application
    Filed: June 17, 2019
    Publication date: January 16, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masanobu SHINAGAWA, Yoshihiko HONDA, Shota TSUKAMOTO
  • Patent number: 10400689
    Abstract: A fuel tank system includes a fuel tank, a canister, a first path, a pump, a switching device, a reference path, a first on-off valve, a second on-off valve, a third on-off valve, a pressure sensor, and a control device configured to control the pump, the switching device, the first on-off valve, the second on-off valve, and the third on-off valve and determine a system state based on a pressure measured by the pressure sensor.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: September 3, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yojiro Iriyama, Chiaki Kataoka, Masanobu Shinagawa
  • Publication number: 20180195445
    Abstract: A fuel tank system includes a fuel tank, a canister, a first path, a pump, a switching device, a reference path, a first on-off valve, a second on-off valve, a third on-off valve, a pressure sensor, and a control device configured to control the pump, the switching device, the first on-off valve, the second on-off valve, and the third on-off valve and determine a system state based on a pressure measured by the pressure sensor.
    Type: Application
    Filed: December 19, 2017
    Publication date: July 12, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yojiro Iriyama, Chiaki Kataoka, Masanobu Shinagawa
  • Patent number: 9267470
    Abstract: A fuel vapor processing apparatus may include a container including an atmospheric introduction portion, through which the atmospheric air can be introduce into the container. An adsorption material may be contained in the container and configured to adsorb feel vapor and to allow the adsorbed fuel vapor to be desorbed as the atmospheric air introduced into the container flows through the adsorption material. A heater may directly or indirectly heat a part of the adsorption material located at an upstream end with respect to the flow of the atmospheric air.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: February 23, 2016
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Masanobu Shinagawa
  • Patent number: 9169810
    Abstract: A fuel vapor processing apparatus may include a container including an atmospheric introduction portion, through which atmospheric air is introduce into the container. An adsorption material may be contained in the container and may be configured to adsorb fuel vapor and to allow the adsorbed fuel vapor to be desorbed from the adsorption material as the atmospheric air introduced into the container flows through the adsorption material. A heater may heat the adsorption material for promoting desorption of fuel vapor and may have a heating value decreasing along a length of the heater in a flow direction of the atmospheric air through the adsorption material for desorption of fuel vapor.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: October 27, 2015
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Masanobu Shinagawa
  • Publication number: 20150096355
    Abstract: A failure detecting device for a fuel vapor processing system may include a leakage determination device configured to determine leakage of fuel vapor from a target region of the fuel vapor processing system. The leakage determination device may include a canister closed valve provided in an atmospheric passage connected between a canister and an atmosphere. The canister closed valve may switch between an open position and a closed upon receiving a supply of electric power, and may maintain the open position or the closed position when no electric power is received.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 9, 2015
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Katsuhiko MAKINO, Mamoru YOSHIOKA, Minoru AKITA, Masanobu SHINAGAWA
  • Publication number: 20130319248
    Abstract: A fuel vapor processing apparatus may include a container including an atmospheric introduction portion, through which the atmospheric air can be introduce into the container. An adsorption material may be contained in the container and configured to adsorb feel vapor and to allow the adsorbed fuel vapor to be desorbed as the atmospheric air introduced into the container flows through the adsorption material. A heater may directly or indirectly heat a part of the adsorption material located at an upstream end with respect to the flow of the atmospheric air.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventor: Masanobu SHINAGAWA
  • Publication number: 20130319249
    Abstract: A fuel vapor processing apparatus may include a container including an atmospheric introduction portion, through which atmospheric air is introduce into the container. An adsorption material may be contained in the container and may be configured to adsorb fuel vapor and to allow the adsorbed fuel vapor to be desorbed from the adsorption material as the atmospheric air introduced into the container flows through the adsorption material. A heater may heat the adsorption material for promoting desorption of fuel vapor and may have a heating value decreasing along a length of the heater in a flow direction of the atmospheric air through the adsorption material for desorption of fuel vapor.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 5, 2013
    Inventor: Masanobu SHINAGAWA