Patents by Inventor Takaki Itaya

Takaki Itaya 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: 20230402904
    Abstract: An object of the present invention is to provide an inverter integrated motor that can effectively cool a power module of an inverter portion. An inverter portion 120 is connected to a motor portion and includes a power module 121 that converts a DC power into an AC power, a first flow path forming body 221a that is provided between a motor and the power module 121 and forms a first flow path 221, and a second flow path forming body 222a that is disposed on a side opposite a side of the first flow path forming body 221a (side of the motor 110) over the power module 121 and forms a second flow path 222. The first flow path forming body 221a and second flow path forming body 222a are formed so that a flow rate of a refrigerant F1 flowing in the first flow path forming body 221a is greater than a flow rate of a refrigerant F2 flowing in the second flow path forming body 222a.
    Type: Application
    Filed: September 9, 2021
    Publication date: December 14, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Takaki ITAYA, Noriyuki MAEKAWA, Hideaki GOTO, Shigehisa AOYAGI, Takashi HIRAO
  • Publication number: 20230336040
    Abstract: A rotating electric machine includes: a rotor core (22) that has magnet insertion holes (22b) (22c); permanent magnets (21) that are inserted into the magnet insertion holes (22b) (22c); and a groove (21cc) (21dc) that is formed in at least one of a plurality of non-magnetic pole surfaces (21c) (21d) of the permanent magnet (21) so as to allow a refrigerant (101) to flow through the groove (21cc) (21dc).
    Type: Application
    Filed: August 31, 2021
    Publication date: October 19, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Hideaki GOTO, Shigehisa AOYAGI, Takaki ITAYA
  • Publication number: 20230291260
    Abstract: An object of the present invention is to provide a rotary electric machine in which damage of a magnet is suppressed and cooling performance of the magnet is improved. The present invention includes a rotation shaft 21, a rotor 20, and core end members 204 and 205 connected to end portions of the rotor 20. The rotor 20 includes a magnet 201, a rotor core 200, and interposed members 301a and 301b interposed between the magnet 201 and the rotor core 200. In the rotor core 200, a magnet insertion hole 202 for disposing the magnet 201 and flux barriers 203a and 203b are formed. The rotation shaft 21 is provided with a first flow path 21a through which a refrigerant flows. The core end members 204 and 205 are provided with a second flow path 504a joining the first flow path 21a and the flux barrier 203a.
    Type: Application
    Filed: August 4, 2021
    Publication date: September 14, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Masanori SAWAHATA, Masahiro HORI, Hideaki GOTO, Takaki ITAYA
  • Publication number: 20230155456
    Abstract: An object of the present invention is to provide an inverter integrated motor that achieves both improvement in cooling performance of a current sensor and downsizing of an entire device. An inverter integrated motor includes: a power module that converts a direct current into an alternating current; a flow path forming body that is formed so as to flow and cover a refrigerant in the power module; an inverter that installs the power module and the flow path forming body inside; a current sensor that detects the alternating current; and a motor that houses a stator and a rotor, wherein the power module is disposed at a position facing a rotation shaft of the motor via the stator and the rotor, and the current sensor 13 is disposed between the flow path forming body and a coil end of the stator when viewed from a direction perpendicular to the rotation shaft, and at least a part of the current sensor is housed in a motor housing.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 18, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Takeshi TOKUYAMA, Takaki ITAYA, Masahiro HORI, Takashi HIRAO
  • Publication number: 20230078306
    Abstract: An abnormality of a component can be accurately detected. An on-vehicle device is an on-vehicle device that is mounted on a vehicle to communicate with a server. The on-vehicle device includes a first information generation unit that generates first information which is information on a state of a first component mounted on the vehicle by using an output of a sensor mounted on the vehicle, and an out-vehicle communication unit that transmits, to the server, the first information and second information which is information on a state of a second component which is a component different from the first component, and receives, from the server, a state signal indicating an abnormal state of the first component calculated by the server based on the first information and the second information.
    Type: Application
    Filed: December 18, 2020
    Publication date: March 16, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Katsuhiro HOSHINO, Takaki ITAYA
  • Publication number: 20220416624
    Abstract: An object of this invention is to efficiently warm up a catalyst and keep its temperature. Provided is a drive system, including: an internal combustion engine; a catalytic unit configured to purify an exhaust gas from the internal combustion engine; a motor used for at least one of drive or regeneration; and a flow path formed so as to allow an oil-based medium for lubricating the motor to flow in the vicinity of the catalytic unit. The oil-based medium is heated in the motor and exchanges heat in the catalytic unit to heat the catalytic unit.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 29, 2022
    Inventors: Takaki ITAYA, Noriyuki MAEKAWA
  • Publication number: 20210381479
    Abstract: An object of the present invention is to provide a fuel injection valve capable of suppressing fuel adhesion to a nozzle surface. Therefore, an injection hole 107 has a curved surface portion 107E formed between a peripheral edge 107I of an inlet opening 107G and an inner peripheral surface 107F. The curved surface portion 107E has a center-side curved surface portion 107AE and an outer-peripheral-side curved surface portion 107BE. The center-side curved surface portion 107AE is formed to have a width W107AE that is larger than the width W107BE of the outer-peripheral-side curved surface portion 107BE.
    Type: Application
    Filed: October 4, 2019
    Publication date: December 9, 2021
    Inventors: Takaki ITAYA, Noriyuki MAEKAWA
  • Publication number: 20210285411
    Abstract: An object is to provide a fuel injection valve that restricts attachment of fuel injected from an injection hole to a combustion chamber. A fuel injection valve including a plurality of injection holes on a front end section, each of the plurality of injection holes including an upstream hole formed on an upstream side and a downstream hole that is connected to the upstream hole, formed on a downstream side of the upstream hole, and has a diameter different from that of the upstream hole. A center axis of a first downstream hole is configured to be eccentric to a center axis side of the fuel injection valve relative to a center axis of a first upstream hole of a first injection hole. An eccentricity amount or an eccentricity direction of a downstream hole relative to an upstream hole of at least one of the other injection holes is different from an eccentricity amount or an eccentricity direction of the first injection hole.
    Type: Application
    Filed: July 18, 2017
    Publication date: September 16, 2021
    Inventors: Takaki ITAYA, Kenichiro OGATA, Masahiko INOUE, Masayuki SARUWATARI
  • Patent number: 11098686
    Abstract: An object of the present invention is to provide a fuel injection valve that can be used in a gasoline engine and can take fuel into an injection hole with a small pressure loss near a seat portion on which a valve is seated. Thus, the present invention provides a fuel injection valve for a gasoline engine which includes: a plurality of injection holes; and a seat portion that opens and closes a fuel passage to the plurality of injection holes in cooperation with a valve. At least one fuel injection hole among the plurality of injection holes is configured in a shape such that an injection hole inlet has a long axis and a short axis, and the long axis is directed in a direction in which an extension line intersects with the seat portion.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: August 24, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takaki Itaya, Tomoyuki Hosaka, Noriyuki Maekawa, Takao Miyake
  • Patent number: 11060476
    Abstract: In an internal combustion engine which performs a homogeneous lean combustion mode and a stratified lean combustion mode, there is provided a new internal combustion engine control device capable of obtaining a stable combustion state by decreasing influences of delay of an air flow and a degree of change of a transient state and smoothly performing switching between the homogeneous lean combustion mode and the stratified lean combustion mode.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: July 13, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kenichiroh Ogata, Yoshinobu Arihara, Hisahiro Ooba, Takaki Itaya
  • Publication number: 20200240380
    Abstract: Dispersibility of fuel in a combustion chamber is improved while adhesion of the fuel to a structure in the combustion chamber is suppressed, and a combustion state of the fuel in the combustion chamber is improved, thereby improving fuel efficiency and suppressing incomplete combustion. Therefore, in a fuel injection valve provided with the plurality of fuel injection holes surrounded by a seat portion, the fuel injection holes have different penetrations. At least one high-pressure fuel injection hole having the longest penetration and low-pressure fuel injection holes excluding the fuel injection hole are included. Among the inter-inlet distances of the adjacent fuel injection holes, an inter-inlet distance between the fuel injection hole and the fuel injection holes adjacent thereto is widest.
    Type: Application
    Filed: November 15, 2018
    Publication date: July 30, 2020
    Inventors: Takaki ITAYA, Noriyuki MAEKAWA, Takao MIYAKE
  • Patent number: 10634083
    Abstract: The objective of the present invention is to correct deviation in the injection amount and changes in the injection timing when the voltage of a high-voltage source for a drive device decreases.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: April 28, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ryo Kusakabe, Tomoaki Horii, Shingo Kimura, Takaki Itaya, Mitsuru Nagase, Shirou Yamaoka
  • Publication number: 20200049118
    Abstract: An object of the present invention is to provide a fuel injection valve that can be used in a gasoline engine and can take fuel into an injection hole with a small pressure loss near a seat portion on which a valve is seated. Thus, the present invention provides a fuel injection valve for a gasoline engine which includes: a plurality of injection holes; and a seat portion that opens and closes a fuel passage to the plurality of injection holes in cooperation with a valve. At least one fuel injection hole among the plurality of injection holes is configured in a shape such that an injection hole inlet has a long axis and a short axis, and the long axis is directed in a direction in which an extension line intersects with the seat portion.
    Type: Application
    Filed: April 19, 2018
    Publication date: February 13, 2020
    Inventors: Takaki ITAYA, Tomoyuki HOSAKA, Noriyuki MAEKAWA, Takao MIYAKE
  • Publication number: 20200032735
    Abstract: In an internal combustion engine which performs a homogeneous lean combustion mode and a stratified lean combustion mode, there is provided a new internal combustion engine control device capable of obtaining a stable combustion state by decreasing influences of delay of an air flow and a degree of change of a transient state and smoothly performing switching between the homogeneous lean combustion mode and the stratified lean combustion mode.
    Type: Application
    Filed: September 13, 2017
    Publication date: January 30, 2020
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Kenichiroh OGATA, Yoshinobu ARIHARA, Hisahiro OOBA, Takaki ITAYA
  • Patent number: 10495021
    Abstract: Provided is an engine control device capable of suppressing deterioration of combustion stability due to a change in engine temperature in an engine which performs lean combustion or EGR combustion. When lean combustion in which an air-fuel mixture leaner than a stoichiometric air-fuel ratio is burned or exhaust gas recirculation combustion in which a diluted air-fuel mixture is burned by re-suctioning exhaust gas discharged from the combustion chamber into the combustion chamber is performed, a ratio of a fuel injection amount during a compression stroke to a total fuel injection amount during one combustion cycle is increased as a temperature of an engine decreases.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: December 3, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kenichiroh Ogata, Yoshinobu Arihara, Hisahiro Ooba, Takaki Itaya
  • Patent number: 10450995
    Abstract: Provided is a control device for an internal combustion engine, the control device enabling the suppression of variations in the amount of fuel injected by injection while the boost voltage is charging, without offsetting the injection timing. A boost circuit (211) boosts a first voltage supplied from a battery (201), and supplies a boosted second voltage to a fuel injection device (214). Switches (212, 213) switch the second voltage supplied to the fuel injection device from the booster circuit on and off. Computation devices (204, 207) control the switches. Each computation device comprises: an estimation unit that, before the initial fuel injection in a combustion cycle, estimates the second voltage for all of the fuel injection times in the combustion cycle; and a correction unit that corrects the amount of fuel injected for each fuel injection time depending on the estimated second voltage.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 22, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shingo Kimura, Tomoaki Horii, Mitsuru Nagase, Shirou Yamaoka, Ryo Kusakabe, Takaki Itaya
  • Publication number: 20190085783
    Abstract: The objective of the present invention is to correct deviation in the injection amount and changes in the injection timing when the voltage of a high-voltage source for a drive device decreases.
    Type: Application
    Filed: November 20, 2018
    Publication date: March 21, 2019
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo KUSAKABE, Tomoaki HORII, Shingo KIMURA, Takaki ITAYA, Mitsuru NAGASE, Shirou YAMAOKA
  • Publication number: 20190063363
    Abstract: Provided is an engine control device capable of suppressing deterioration of combustion stability due to a change in engine temperature in an engine which performs lean combustion or EGR combustion. When lean combustion in which an air-fuel mixture leaner than a stoichiometric air-fuel ratio is burned or exhaust gas recirculation combustion in which a diluted air-fuel mixture is burned by re-suctioning exhaust gas discharged from the combustion chamber into the combustion chamber is performed, a ratio of a fuel injection amount during a compression stroke to a total fuel injection amount during one combustion cycle is increased as a temperature of an engine decreases.
    Type: Application
    Filed: January 10, 2017
    Publication date: February 28, 2019
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kenichiroh OGATA, Yoshinobu ARIHARA, Hisahiro OOBA, Takaki ITAYA
  • Patent number: 10161339
    Abstract: The objective of the present invention is to correct deviation in the injection amount and changes in the injection timing when the voltage of a high-voltage source for a drive device decreases.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: December 25, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ryo Kusakabe, Tomoaki Horii, Shingo Kimura, Takaki Itaya, Mitsuru Nagase, Shirou Yamaoka
  • Publication number: 20180283306
    Abstract: The objective of the present invention is to correct deviation in the injection amount and changes in the injection timing when the voltage of a high-voltage source for a drive device decreases.
    Type: Application
    Filed: September 18, 2015
    Publication date: October 4, 2018
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo KUSAKABE, Tomoaki HORII, Shingo KIMURA, Takaki ITAYA, Mitsuru NAGASE, Shirou YAMAOKA