Patents by Inventor Kazuhiro Yoneshige

Kazuhiro Yoneshige 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: 20220170554
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 2, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Publication number: 20220170553
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 2, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Patent number: 11274750
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 15, 2022
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi Itahara, Kazuhiro Yoneshige, Hiroshi Kawazoe, Makoto Fukui, Sadatsugu Nagata
  • Publication number: 20200173562
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: June 1, 2018
    Publication date: June 4, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Patent number: 10224557
    Abstract: A fuel cell system comprises a fuel cell for generating electricity with the supply of hydrogen gas and air, a hydrogen supply unit for supplying the hydrogen gas to the fuel cell, an air supply unit for supplying the air to the fuel cell, and a produced water atomizing apparatus for atomizing the produced water produced in association with electricity generation in the fuel cell and emitting the atomized water to the atmosphere. The air supply unit includes an air pump for pressure-feeding the air to the fuel cell, and the produced water atomizing apparatus includes an aspirator to atomize the produced water by use of the air emitted from the air pump as operation air. The air emitted from the air pump is cooled by an intercooler. The air utilized in the aspirator as the operation air is supplied to the aspirator on an upstream side of the intercooler.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: March 5, 2019
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Masashi Takeda, Kazuhiro Yoneshige
  • Publication number: 20180034080
    Abstract: A fuel cell system comprises a fuel cell for generating electricity with the supply of hydrogen gas and air, a hydrogen supply unit for supplying the hydrogen gas to the fuel cell, an air supply unit for supplying the air to the fuel cell, and a produced water atomizing apparatus for atomizing the produced water produced in association with electricity generation in the fuel cell and emitting the atomized water to the atmosphere. The air supply unit includes an air pump for pressure-feeding the air to the fuel cell, and the produced water atomizing apparatus includes an aspirator to atomize the produced water by use of the air emitted from the air pump as operation air. The air emitted from the air pump is cooled by an intercooler. The air utilized in the aspirator as the operation air is supplied to the aspirator on an upstream side of the intercooler.
    Type: Application
    Filed: July 3, 2017
    Publication date: February 1, 2018
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru YOSHIOKA, Masashi TAKEDA, Kazuhiro YONESHIGE
  • Publication number: 20150176541
    Abstract: Recirculation piping that recirculates fuel discharged from a fuel pump to an intake side of a fuel pump in a fuel tank is provided. In addition, a canister is formed with a heat transfer surface that guides fuel flowing through the fuel tank during actuation of the fuel pump. When the recirculation piping recirculates the fuel discharged from the fuel pump into the fuel tank, the heat transfer surface transfers heat between the canister and the fuel discharged from the fuel pump among fuel in the fuel tank.
    Type: Application
    Filed: July 24, 2013
    Publication date: June 25, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi Nagasaku, Shuichi Aso, Katsunori Kamiya, Kazuhiro Yoneshige
  • Publication number: 20150167597
    Abstract: If it is determined that an internal temperature Tc of a canister that is formed with a heat transfer surface for guiding fuel that flows through a fuel tank during actuation of a fuel pump is lower than a specified temperature To (step S1), the ECU determines whether a driving voltage of the fuel pump is a high driving voltage (step S2). If it is determined that the driving voltage of the fuel pump is not the high driving voltage, an FPC is controlled, and the driving voltage of the fuel pump is increased (step S3, S5). Accordingly, a current that flows through the fuel pump is increased, so as to heat discharged fuel.
    Type: Application
    Filed: July 30, 2013
    Publication date: June 18, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi Nagasaku, Shuichi Aso, Katsunori Kamiya, Kazuhiro Yoneshige
  • Patent number: 8276568
    Abstract: A fuel supply apparatus according to the present invention includes vapor production determining means for determining whether or not the vapor of the fuel is producible, and control means (ECU) for operating a passage resistance adjusting means of a pressure adjusting mechanism to cause increase of the pressure of the fuel supplied to an injector insomuch as the production of the vapor is inhibited when the vapor production determining means has determined a vapor producible condition.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: October 2, 2012
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Kunio Takagi, Kazuhiko Nishimura, Kazuhiro Yoneshige, Satomi Wada, Hiroki Endo, Masaki Ikeya
  • Patent number: 8264186
    Abstract: The present invention includes a control device capable of applying a high voltage to a motor of a fuel pump for an appropriate period of time during a low voltage operation of the motor.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 11, 2012
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Kazumichi Hanai, Kazuhiro Yoneshige
  • Publication number: 20100111710
    Abstract: The present invention includes a control device capable of applying a high voltage to a motor of a fuel pump for an appropriate period of time during a low voltage operation of the motor.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 6, 2010
    Inventors: Kazumichi Hanai, Kazuhiro Yoneshige
  • Publication number: 20090071444
    Abstract: It is an object of the present invention to inhibit production of vapor within fuel when an engine is at a high temperature and to inhibit change of amount of the fuel injected from an injector. A fuel supply apparatus according to the present invention includes vapor production determining means (3) for determining whether or not the vapor of the fuel is producible, and control means (ECU) for operating a passage resistance adjusting means (47) of a pressure adjusting mechanism (40) to cause increase of the pressure of the fuel supplied to an injector (5) insomuch as the production of the vapor is inhibited when the vapor production determining means (3) has determined a vapor producible condition.
    Type: Application
    Filed: February 7, 2007
    Publication date: March 19, 2009
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Kunio Takagi, Kazuhiko Nishimura, Kazuhiro Yoneshige, Satomi Wada, Hiroki Endo, Masaki Ikeya
  • Patent number: 7278393
    Abstract: A fuel injection device is provided with a fuel injection valve for injecting fuel into a combustion chamber and an air injection valve for the injection of air into the combustion chamber. One fuel injection orifice which opens into the combustion chamber is provided correspondingly to the fuel injection valve and plural air injection orifices which open into the combustion chamber are provided correspondingly to the air injection valve. A design is made so that fuel and air injected from the fuel injection orifice and the air injection orifices come into collision with each other at a collision point. The shape, size and direction of the fuel injection orifice are specified. Likewise, the number, shape, size and direction of the air injection orifice, as well as its arrangement relative to the fuel injection orifice, are specified. A design is made so that the size of a fuel spray and that of air jets at the collision point become equal to each other.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: October 9, 2007
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Masaya Hayakawa, Kazuhiro Yoneshige
  • Patent number: 6920861
    Abstract: A fuel injection device includes a fuel injection valve for injecting fuel through a fuel injection orifice opening into a combustion chamber, an air injection valve for injecting air through an air injection orifice opening into the combustion chamber, sensors for detecting an operating condition of an engine, and an electronic control unit (ECU) for controlling the fuel injection valve and the air injection valve. Orientations of the air injection orifice and the fuel injection orifice are determined to make an air jet collide with a fuel spray. The ECU controls the fuel injection valve based on the operating condition detected by the sensors to control spray velocity, spray particle diameter, spray angle, etc. of the fuel to be injected through the fuel injection orifice, and at least one of an air injection timing and an air injection period of air injection to be performed by the air injection valve.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: July 26, 2005
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Masaya Hayakawa, Kazuhiro Yoneshige
  • Publication number: 20040261761
    Abstract: A fuel injection device is provided with a fuel injection valve for injecting fuel through a fuel injection orifice opening into a combustion chamber, an air injection valve for injecting air through an air injection orifice opening into the combustion chamber, various sensors for detecting an operating condition of an engine, and an electronic control unit (ECU) for controlling the fuel injection valve and the air injection valve individually. The orientations of the air injection orifice and the fuel injection orifice are determined to make an air jet collide with a fuel spray. The ECU controls the fuel injection valve based on the operating condition detected by the sensors to control spray velocity, spray particle diameter, spray angle, etc. of the fuel to be injected through the fuel injection orifice. The ECU also controls at least one of an air injection timing and an air injection period of air injection to be performed by the air injection valve.
    Type: Application
    Filed: May 17, 2004
    Publication date: December 30, 2004
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masaya Hayakawa, Kazuhiro Yoneshige
  • Publication number: 20040154584
    Abstract: A fuel injection device is provided with a fuel injection valve for injecting fuel into a combustion chamber and an air injection valve for the injection of air into the combustion chamber. One fuel injection orifice which opens into the combustion chamber is provided correspondingly to the fuel injection valve and plural air injection orifices which open into the combustion chamber are provided correspondingly to the air injection valve. A design is made so that fuel and air injected from the fuel injection orifice and the air injection orifices come into collision with each other at a collision point. The shape, size and direction of the fuel injection orifice are specified. Likewise, the number, shape, size and direction of the air injection orifice, as well as its arrangement relative to the fuel injection orifice, are specified. A design is made so that the size of a fuel spray and that of air jets at the collision point become equal to each other.
    Type: Application
    Filed: December 30, 2003
    Publication date: August 12, 2004
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masaya Hayakawa, Kazuhiro Yoneshige
  • Patent number: 6712048
    Abstract: Driving circuitry for an electromagnetic fuel injection valve in which the holding current value is made variable to obtain a minimum necessary holding force from the holding current according to the fuel pressure includes a solenoid for driving the fuel injection valve, a capacitor charged by a high-voltage charge control part, a switch circuit for on-off controlling a high-voltage current supplied from the capacitor to the solenoid in response to an injection command signal, and a holding current supply circuit for supplying a holding current from the power supply to the solenoid. When the holding current is supplied, a comparator circuit compares a voltage obtained by converting the value of electric current flowing through the solenoid by a resistor for detection and a voltage corresponding to a fuel pressure sensor signal, and the value of the holding current is varied according to an output signal from the comparator circuit.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: March 30, 2004
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Tsuneaki Aoki, Atsushi Okada, Kazuhiro Yoneshige
  • Publication number: 20020179059
    Abstract: Driving circuitry for an electromagnetic fuel injection valve in which the holding current value is made variable to obtain a minimum necessary holding force from the holding current according to the fuel pressure is disclosed. The driving circuitry has a solenoid for driving the electromagnetic fuel injection valve, a capacitor charged by a high-voltage charge control part connected to a power supply, a switch circuit for on-off controlling a high-voltage current supplied from the capacitor to the solenoid in response to an injection command signal, and a holding current supply circuit for supplying a holding current from the power supply to the solenoid. When the holding current is supplied, a comparator circuit compares a voltage obtained by converting the value of electric current flowing through the solenoid by a resistor for detection and a voltage corresponding to a fuel pressure sensor signal, and the value of the holding current is varied according to an output signal from the comparator circuit.
    Type: Application
    Filed: May 21, 2002
    Publication date: December 5, 2002
    Inventors: Tsuneaki Aoki, Atsushi Okada, Kazuhiro Yoneshige
  • Publication number: 20020047055
    Abstract: This fuel injection valve is provided in a body thereof with a needle valve so that the needle valve can be moved in the axial direction and inclined by an angle of inclination of &thgr;1 with respect to the axis of the body, and with stopper plates with which a stopper portion of the needle valve is engaged when the valve is opened, and an angle of inclination &thgr;2 with respect to a perpendicular plane crossing the axis of the needle valve at right angles thereto is given between the stopper portion and stopper plates. The angle of inclination &thgr;2 between the stopper portion and stopper plates is set to be larger than that &thgr;1 in the axial direction of the needle valve, and the stopper portion is formed so that a ratio D1/D0 of an outer diameter D1 of the stopper portion of the needle valve to an inner diameter D0 of an inner chamber of the body becomes 0.6 to 1.1.
    Type: Application
    Filed: March 29, 2000
    Publication date: April 25, 2002
    Inventors: Mamoru Matsubara, Kazuhiro Yoneshige, Atsushi Okada
  • Patent number: 5755210
    Abstract: In a fuel discharge preventive device of a gas engine, in order to prevent high-pressure gaseous fuel remaining in a fuel distributing pipe when an engine is stopped, from leaking out of a gaseous fuel injection valve to be discharged to the open air, a fuel shut-off valve is provided in a fuel feed passage through which gaseous fuel is fed to the gaseous fuel injection valve, and a suction passage communicating with a gaseous fuel storing portion is branched off from the fuel feed passage between the gaseous fuel injection valve and the fuel shut-off valve, so that the gaseous fuel in a potion of the fuel feed passage located between the gaseous fuel injection valve and the fuel shut-off valve is stored in the gaseous fuel storing portion after the engine is stopped and hence the fuel shut-off valve is closed, while the stored fuel is purged to the engine when the engine is being operated.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: May 26, 1998
    Assignees: Aisan Kogyo Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Toru Sato, Kazuhiro Yoneshige, Kazusato Kasuya, Kichiro Kato, Masahiko Masubuchi