Patents by Inventor Yuya TANIDA

Yuya TANIDA 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).

  • Publication number: 20220389889
    Abstract: A leakage detector includes a pressure sensor for detecting the pressure in a detecting target area of the fuel vapor treatment system and a controller. The controller measures the pressure in the detecting target area at a certain point in time. The controller then determines whether the measured pressure satisfies a condition for leakage detection by a vapor pressure device. When the controller determines that the condition is satisfied, the controller selects the vapor pressure device. When the controller determines that the condition is not satisfied, the controller predicts the change in vapor pressure at a subsequent temperature based on a saturated vapor pressure characteristic of the fuel. If it is determined the pressure in the detecting target will satisfy a predetermined condition, the controller selects a pressure application device. If it is determined that the predetermined condition will be satisfied, the controller selects the vapor pressure device.
    Type: Application
    Filed: May 11, 2022
    Publication date: December 8, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yuya TANIDA, Mariko KAWASE
  • Publication number: 20220349795
    Abstract: A concentration measuring device includes a circulation passage, an aspirator, a differential pressure sensor, and a control unit. The aspirator is disposed in a fuel tank and is connected to the circulation passage. While a gas flows from a gaseous layer within a fuel tank through the circulation passage due to a negative pressure generated in the aspirator, the differential pressure sensor measures a pressure difference of the gas within the circulation passage between an upstream side of a narrowed part, having a narrower passage area than an adjacent portion of the circulation passage, and a downstream side of the narrowed part. The control unit is configured to calculate a density of the fuel vapor from the pressure difference of the gas and to calculate a concentration of the fuel vapor from the density of the fuel vapor.
    Type: Application
    Filed: April 26, 2022
    Publication date: November 3, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yuya TANIDA, Mariko KAWASE
  • Publication number: 20220349772
    Abstract: A leakage detector for a fuel vapor processing system includes a pressure sensor and a control unit. The pressure sensor is configured to measure an internal pressure of the fuel vapor processing system. The control unit is configured to calculate changes of a fuel vapor pressure from a saturation vapor pressure curve of the fuel vapor, a fuel vapor concentration of the fuel vapor in a gaseous layer within the fuel vapor processing system, and a convective velocity in the gaseous layer, to correct a reference pressure for leakage detection based on the changes of the fuel vapor pressure so as to calculate a corrected reference pressure, and to compare the internal pressure measured by the first pressure sensor to the corrected reference pressure so as to determine whether any of the fuel vapor has leaked from the fuel vapor processing system.
    Type: Application
    Filed: April 27, 2022
    Publication date: November 3, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yuya TANIDA, Mariko KAWASE
  • Publication number: 20220341376
    Abstract: A failure diagnostic device is configured to determine saturated vapor pressures of a fuel within a fuel tank. In a fuel vapor processing apparatus, some or all of the passages and spaces into which the fuel vapor flows into the fuel vapor processing apparatus are closed to the atmosphere. In this condition, the failure diagnostic device determines a plurality of saturated vapor pressure characteristics over time. The failure diagnostic device is configured to diagnose whether or not a leakage or a blockage failure in the fuel vapor processing apparatus is present. The failure diagnostic device determines a Reid vapor pressure (RVP) based on each of the plurality of determined saturated fuel vapor pressure characteristic and diagnoses whether or not a failure is present in accordance with a change in these RVPs over time.
    Type: Application
    Filed: April 20, 2022
    Publication date: October 27, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mariko KAWASE, Yuya TANIDA
  • 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: 20210317804
    Abstract: A fuel vapor treatment system includes a plurality of adsorbent sections arranged in series and configured to adsorb fuel vapor, a tank port in fluid communication with a fuel tank, a purge port in fluid communication with an engine, an atmospheric port in fluid communication with a surrounding atmosphere, and a constriction plate disposed adjacent to an atmospheric side end of the adsorbent section of the plurality of adsorbent sections that is most proximal the atmospheric port. The constriction plate is positioned adjacent the adsorbent section without an intermediate space formed therebetween. The constriction plate has a plurality of through holes. The total cross-sectional area of the through holes in the constriction plate is smaller than a cross-sectional area of a flow passage in the atmospheric port.
    Type: Application
    Filed: April 12, 2021
    Publication date: October 14, 2021
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Hiroaki KITANAGA, Yuya TANIDA
  • Publication number: 20210270216
    Abstract: A fuel vapor processing apparatus includes a casing forming a flow passage, a first adsorption chamber disposed on one end of the flow passage and configured to store a first adsorbent, a fourth adsorption chamber disposed on the other end of the flow passage and configured to store a fourth adsorbent, and a second adsorption chamber and a third adsorption chamber disposed in series between the first adsorption chamber and the fourth adsorption chamber, the second and third adsorption chambers configured to store a second adsorbent and a third adsorbent, respectively. The first adsorption chamber and the fourth adsorption chamber are disposed adjacent to each other so as to allow heat to be exchanged therebetween.
    Type: Application
    Filed: February 2, 2021
    Publication date: September 2, 2021
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Hiroaki KITANAGA, Yuya TANIDA, Hiroyuki TAKAHASHI
  • Publication number: 20200198460
    Abstract: A fuel supply system for supplying a fuel from a fuel tank to an engine includes a fuel pump for delivering a fuel from the fuel tank, a fuel pipe for flowing therethrough the fuel from fuel pump, a canister including an activated carbon capable of adsorbing and desorbing vaporized fuel generated in the fuel tank, a heat exchanging mechanism for performing heat exchange between the fuel pipe and the canister on a downstream side of the fuel pump, and a return pipe for returning the fuel from the fuel pipe to the fuel tank on a downstream side of the heat exchanging mechanism.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 25, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Yoshihiko HONDA, Yuya TANIDA, Satomi YOKOI