Patents by Inventor Taisuke Sugii

Taisuke Sugii 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: 20210131372
    Abstract: An object of the present invention is to provide a control device of an injector capable of suppressing the influence of pressure reduction boiling even if pressure in a combustion chamber is low. In a case where the temperature of fuel injected from a fuel injection valve is within a set high temperature region and the pressure of the combustion chamber is within a set low pressure region, the control device of an in-cylinder direct injection-type injector according to the present invention controls to increase a lift amount of the injector as compared to the case of a low temperature region or a high pressure region.
    Type: Application
    Filed: February 5, 2018
    Publication date: May 6, 2021
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki HOSAKA, Taisuke SUGII, Eiji ISHII, Kazuki YOSHIMURA, Yoshihiro SUKEGAWA, Masayuki SARUWATARI
  • Publication number: 20200400112
    Abstract: An object of the present invention is to provide a fuel injection valve that realizes atomization while suppressing spread of a spray. A fuel injection valve includes: a valve body and a valve seat that cooperate to open and close a fuel passage; a swirl imparting chamber that is arranged on a downstream side of an opening and closing portion of the fuel passage by the valve body and the valve seat, and imparts a swirling velocity to fuel; a communication passage arranged on an upstream side of the swirl imparting chamber and connected to the swirl imparting chamber; and fuel injection holes and that are open at a bottom surface of the swirl imparting chamber and injects fuel imparted with the swirling velocity in a swirl passage to an outside, the fuel injection holes and configured such that cross-sectional areas of the fuel injection holes and increase from the inlet to the outlet.
    Type: Application
    Filed: September 25, 2018
    Publication date: December 24, 2020
    Inventors: Hiroshi MUKAI, Mitsuhiro MATSUZAWA, Akihiro YAMAZAKI, Masaki NAGAOKA, Takahiro SAITO, Eiji ISHII, Taisuke SUGII, Kazuki YOSHIMURA
  • Patent number: 10718304
    Abstract: It is prevented that residual fuel left in the vicinity of an injection nozzle outlet is carbonized to cause adherence of the carbonized fuel as deposit and changing of a spray pattern or an injection flow rate. A fuel injection valve includes a seat portion on which a valve body is seated and a seat portion in which an injection hole for injecting fuel downstream from the seat portion is formed, in which a concave surface denting in a direction opposite to a fuel injecting direction is formed on an outer peripheral side away from the injection hole at an end face located downstream of the seat member, and the concave surface is formed such that a material surface in an outer peripheral region has a larger wettability for the fuel than in an inner peripheral region.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 21, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Ishii, Kazuki Yoshimura, Taisuke Sugii
  • Patent number: 10677208
    Abstract: Provided is a fuel injector that is capable of reducing penetration. The fuel injector of the present invention includes a valve body having a valve body side seat surface, a valve seat side seat surface that abuts on the valve body side seat surface, and an injection hole that is provided downstream of a position at which the valve body side seat surface abuts on the valve seat side seat surface. The valve body has a projection that is formed from the valve body side seat surface toward the injection hole, and the projection is formed to be smaller in a direction of fuel flow between seats than a radius of an upstream opening surface of the injection hole.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: June 9, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki Hosaka, Eiji Ishii, Yoshihiro Sukegawa, Taisuke Sugii, Kazuki Yoshimura, Kazuhiro Oryoji, Masayuki Saruwatari
  • Publication number: 20190360445
    Abstract: It is possible to prevent a change in the spray pattern and injection flow rate and an increase of particulate matters in the exhaust gas due to residual fuel left in the vicinity of an injection hole outlet carbonized and adhered as deposit. A fuel injection valve includes a displaceable valve body, a valve seat surface that touches the valve body, and an injection hole cup including at least one injection hole formed on the valve body's tip end side and beyond where the valve seat surface touches the valve body. The injection hole cup includes a low lipophilic portion and a lipophilic portion formed on the injection hole cup's surface, the lipophilic portion is formed inside at least a part of a range in which the low lipophilic portion is formed, and at least one portion of the low lipophilic portion is connected to the injection hole's end portion.
    Type: Application
    Filed: November 24, 2017
    Publication date: November 28, 2019
    Applicant: HITACHI, LTD.
    Inventors: Taisuke SUGII, Eiji ISHII, Kazuki YOSHIMURA, Tomoyuki HOSAKA
  • Publication number: 20190211763
    Abstract: Provided is a fuel injection device and a control unit therefor which enable reliable ignition even in a case where fuel pressure is low immediately after starting an engine. In the control unit for controlling an injector injecting fuel into an internal combustion engine, a plurality of injectors is provided in the internal combustion engine, a static flow rate of a first injector is configured to be smaller than a static flow rate of a second injector. In a case where a fuel pressure of fuel supplied by a pressurizing unit is lower than a set value set lower than a fuel pressure in warming up, an injection ratio of the first injector is controlled to increase according to a difference between a fuel pressure of fuel from the pressurizing unit and a fuel pressure in warming up.
    Type: Application
    Filed: August 2, 2017
    Publication date: July 11, 2019
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Tomoyuki HOSAKA, Taisuke SUGII, Eiji ISHII, Yoshihiro SUKEGAWA, Masayuki SARUWATARI
  • Publication number: 20190063392
    Abstract: It is prevented that residual fuel left in the vicinity of an injection nozzle outlet is carbonized to cause adherence of the carbonized fuel as deposit and changing of a spray pattern or an injection flow rate. A fuel injection valve includes a seat portion on which a valve body is seated and a seat portion in which an injection hole for injecting fuel downstream from the seat portion is formed, in which a concave surface denting in a direction opposite to a fuel injecting direction is formed on an outer peripheral side away from the injection hole at an end face located downstream of the seat member, and the concave surface is formed such that a material surface in an outer peripheral region has a larger wettability for the fuel than in an inner peripheral region.
    Type: Application
    Filed: December 16, 2016
    Publication date: February 28, 2019
    Inventors: Eiji ISHII, Kazuki YOSHIMURA, Taisuke SUGII
  • Publication number: 20190040814
    Abstract: A fuel injection valve capable of forming a homogeneous air-fuel mixture in homogeneous combustion at a low engine speed and a control device thereof are provided. According to the present invention, a fluid injection valve that is configured separately from a fuel injection valve and has a function of injecting a fluid is provided and a control device of the fuel injection valve includes a control unit that performs control such that fuel is injected from the fuel injection valve and then controls the fluid injection valve such that the fluid is injected from the fluid injection valve and the fuel injected from the fuel injection valve is stirred.
    Type: Application
    Filed: November 16, 2016
    Publication date: February 7, 2019
    Inventors: Tomoyuki HOSAKA, Taisuke SUGII, Eiji ISHII, Yoshihiro SUKEGAWA, Masayuki SARUWATARI, Kazuhiro ORYOJI
  • Publication number: 20180149127
    Abstract: Provided is a fuel injector that is capable of reducing penetration. The fuel injector of the present invention includes a valve body having a valve body side seat surface, a valve seat side seat surface that abuts on the valve body side seat surface, and an injection hole that is provided downstream of a position at which the valve body side seat surface abuts on the valve seat side seat surface. The valve body has a projection that is formed from the valve body side seat surface toward the injection hole, and the projection is formed to be smaller in a direction of fuel flow between seats than a radius of an upstream opening surface of the injection hole.
    Type: Application
    Filed: April 8, 2016
    Publication date: May 31, 2018
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Tomoyuki HOSAKA, Eiji ISHII, Yoshihiro SUKEGAWA, Taisuke SUGII, Kazuki YOSHIMURA, Kazuhiro ORYOJI, Masayuki SARUWATARI
  • Publication number: 20150009591
    Abstract: Approaches to improving head positioning accuracy in a hard disk drive, by reducing air pressure fluctuations that would otherwise cause unwanted coil torsion in a voice coil actuator, include a voice coil actuator having a streamlined structure configured to affect the flow of air acting upon a coil-supporting arm. The streamlined structure comprises an upper surface and a lower surface, where the upper surface is sloped downward toward the lower surface and the lower surface is sloped upward toward the upper surface.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 8, 2015
    Inventors: Akiko Kagatsume, Taisuke Sugii, Yoshiyuki Hirono, Hajime Eguchi, Takashi Kouno
  • Publication number: 20140029136
    Abstract: A particle-capturing device configured to remove particles from a plurality of air-streams flowing within a disk enclosure of a HDD. The particle-capturing device includes a particle-capturing filter, and a filter holder. The filter has a front side and a back side. The filter holder holds the filter. The filter holder has a first opening configured to allow a first in-bound air-stream to flow in-bound through a first portion of the filter, which is disposed in the first opening, from the front side out through the back side of the filter, and a second opening configured to allow an out-bound air-stream to flow out-bound through a second portion of the filter, which is disposed in the second opening, from the back side out through the front side of the filter. A HDD and a particle-capturing system that include the particle-capturing device are also provided.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 30, 2014
    Inventor: Taisuke Sugii
  • Patent number: 8638525
    Abstract: A particle-capturing device configured to remove particles from a plurality of air-streams flowing within a disk enclosure of a HDD. The particle-capturing device includes a particle-capturing filter, and a filter holder. The filter has a front side and a back side. The filter holder holds the filter. The filter holder has a first opening configured to allow a first in-bound air-stream to flow in-bound through a first portion of the filter, which is disposed in the first opening, from the front side out through the back side of the filter, and a second opening configured to allow an out-bound air-stream to flow out-bound through a second portion of the filter, which is disposed in the second opening, from the back side out through the front side of the filter. A HDD and a particle-capturing system that include the particle-capturing device are also provided.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: January 28, 2014
    Assignee: HGST Netherlands B.V.
    Inventor: Taisuke Sugii
  • Publication number: 20130222947
    Abstract: A removable cover assembly for a data storage device comprises a first cover coupled with a casing base of a data storage device via a plurality of screws. A second cover is disposed upon a rib of the casing base and is coupled with the rib. The second cover is configured with a groove which delineates a perimeter separating an interior region of the second cover from an exterior region of the second cover. A space between the first cover and the casing base is filled with a low-density gas. The groove defines the region in the second cover in which separation of the interior region from the exterior region is to occur to expose the screws.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 29, 2013
    Inventors: Taisuke Sugii, Masaru Muranishi, Nobuyuki Isoshima, Takehiko Eguchi
  • Publication number: 20130021695
    Abstract: A magnetic disk device including: one or more disk-shaped magnetic disks; a spindle motor; a magnetic head; an arm for supporting the magnetic head; an enclosure base for housing the above components; an adjacent facing surface which lies in the enclosure base adjacent to the magnetic disk; a non-adjacent facing surface which lies in the enclosure opposite the magnetic disk and is further from the magnetic disk than the adjacent facing surface; a connecting surface for connecting the adjacent facing surface and the non-adjacent facing surface; and a groove which extends in the circumferential direction of the magnetic disk on the magnetic disk inner circumferential side of the adjacent facing surface, wherein one end of the groove is exposed at the connecting surface, while the other end has an end face which is perpendicular to the direction of rotation of the magnetic disk.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 24, 2013
    Inventors: Taisuke SUGII, Yoshiyuki HIRONO, Takanori KAWAKAMI
  • Patent number: 8256502
    Abstract: A heat exchange member comprising a liquid layer and a solid layer capable of conducting a heat exchange reaction with the liquid layer upon their solid-liquid contact at an interface between the solid layer and the solid layer, wherein the solid layer further comprises on a surface thereof which is contacted with the liquid layer a surface coating layer capable of reducing a difference of the vibration between a thermal vibration of the solid and a thermal vibration of the liquid, and the surface coating layer comprises a plurality of fibrous structures arranged on a surface of the solid layer, and a heat exchange apparatus using the heat exchange member.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: September 4, 2012
    Assignee: Denso Corporation
    Inventors: Touru Kawaguchi, Eiichi Torigoe, Yasumasa Hagiwara, Yoichiro Matsumoto, Gota Kikugawa, Taisuke Sugii
  • Publication number: 20080302517
    Abstract: A heat exchange member comprising a liquid layer and a solid layer capable of conducting a heat exchange reaction with the liquid layer upon their solid-liquid contact at an interface between the solid layer and the solid layer, wherein the solid layer further comprises on a surface thereof which is contacted with the liquid layer a surface coating layer capable of reducing a difference of the vibration between a thermal vibration of the solid and a thermal vibration of the liquid, and the surface coating layer comprises a plurality of fibrous structures arranged on a surface of the solid layer, and a heat exchange apparatus using the heat exchange member.
    Type: Application
    Filed: June 4, 2008
    Publication date: December 11, 2008
    Applicants: DENSO CORPORATION, The University Of Tokyo
    Inventors: Touru Kawaguchi, Eiichi Torigoe, Yasumasa Hagiwara, Yoichiro Matsumoto, Gota Kikugawa, Taisuke Sugii