Patents by Inventor Hiroki Iwasa

Hiroki Iwasa 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: 10731757
    Abstract: The controller performs shift control of the transmission such that an actual pressure of a primary pressure becomes an indicating pressure. The controller includes a phase advance compensator which performs advance compensation of the indicating pressure, and a setting unit which sets an indicating pressure on which the advance compensation is performed by the phase advance compensator as the indicating pressure, in accordance with at least one of a rotation speed of a primary pulley, an input torque to a secondary pulley, a speed ratio, or a changing rate.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: August 4, 2020
    Assignee: JATCO LTD
    Inventors: Takurou Kawasumi, Ken Okahara, Midori Yamaguchi, Masahiro Yamamoto, Hiroki Iwasa, Hiroki Kumashiro, Masayuki Shimizu, Ryuuichi Furukawa, Kenichi Mori, Kazutaka Adachi, Yutaka Kaneko, Hiroyuki Ashizawa
  • Patent number: 10724633
    Abstract: The present invention is related to a vehicle including a motor-generator, a transmission, a shift hydraulic control unit, and a CVT control unit (CVTCU). When a downshift of the transmission is performed without an acceleration request from a driver, the CVTCU sets a pulley thrust at a secondary pulley on the basis of a first lower limit as a lower limit, which is a sum of a fundamental thrust and a first correction thrust. The CVTCU also sets a pulley thrust at a primary pulley on the basis of a second lower limit as a lower limit, which is a sum of the fundamental thrust and a second correction thrust.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 28, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Hiroki Iwasa, Hironori Miyaishi, Sungpil Ryu, Tetsuya Izumi
  • Patent number: 10690238
    Abstract: Provided are a variator and a transmission controller in an engine-driven vehicle. The transmission controller has an instantaneous interruption recovery control portion configured to, upon a power reset from an instantaneous interruption during running, set a target through transmission ratio and a desired through transmission ratio to a lowest transmission ratio value by initialization and perform recovery control to recover an actual through transmission ratio of the variator to a transmission ratio value for shifting to normal control. The instantaneous interruption recovery control portion is further configured to, upon the power reset from the instantaneous interruption during the running, set a change speed of the target through transmission ratio from the lowest transmission ratio value to the desired through transmission ratio, to be higher than that under the normal control, before a time at which the desired through transmission ratio value deviates from the lowest transmission ratio value.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: June 23, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yasunori Ishii, Tetsuya Izumi, Sungpil Ryu, Hiroki Iwasa, Hironori Miyaishi
  • Patent number: 10604600
    Abstract: The objection of the present invention is to provide a photocurable resin composition having deep curability. The photocurable resin composition comprises an allyl polymer (a) produced by polymerization of an allyl compound represented by the following formula (1), a photocurable compound (b), and a photopolymerization initiator (c). In the formula, n represents an integer of 2 to 4; Z is selected from a binding site, an n-valent aliphatic chain hydrocarbon group optionally having a hydroxyl group, an n-valent alicyclic hydrocarbon group optionally having an alkyl group, and an n-valent aromatic hydrocarbon group optionally having an alkyl group; n is 2 and two —COOCH2CH?CH2 moieties are directly bonded to each other when Z is a binding site.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: March 31, 2020
    Assignee: OSAKA SODA CO., LTD.
    Inventors: Hideaki Umakoshi, Naruhito Iwasa, Hiroki Yamamoto
  • Patent number: 10550938
    Abstract: A hydraulic pressure controller includes belt sandwiching force increasing means. The belt sandwiching force increasing means increases a belt sandwiching force by a primary pulley and a secondary pulley on the basis of a braking force request from a driver, up to a predetermined value to prevent a belt from slipping due to a braking force. The belt sandwiching force increasing means increases the belt sandwiching force in a range of less than the predetermined value before the braking force request occurs.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: February 4, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Hiroki Iwasa, Hironori Miyaishi, Tetsuya Izumi
  • Publication number: 20200025288
    Abstract: Provided are a variator and a transmission controller in an engine-driven vehicle. The transmission controller has an instantaneous interruption recovery control portion configured to, upon a power reset from an instantaneous interruption during running, set a target through transmission ratio and a desired through transmission ratio to a lowest transmission ratio value by initialization and perform recovery control to recover an actual through transmission ratio of the variator to a transmission ratio value for shifting to normal control. The instantaneous interruption recovery control portion is further configured to, upon the power reset from the instantaneous interruption during the running, set a change speed of the target through transmission ratio from the lowest transmission ratio value to the desired through transmission ratio, to be higher than that under the normal control, before a time at which the desired through transmission ratio value deviates from the lowest transmission ratio value.
    Type: Application
    Filed: September 6, 2016
    Publication date: January 23, 2020
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yasunori ISHII, Tetsuya IZUMI, Sungpil RYU, Hiroki IWASA, Hironori MIYAISHI
  • Patent number: 10507833
    Abstract: A vehicle control device for controlling a vehicle including an oil pump driven by a transmission of a rotation of the motor-generator; and a hydraulic pressure supply unit for supplying a hydraulic pressure to the continuously variable transmission. The hydraulic pressure is generated by regulating a pressure of an oil discharged from the oil pump. When a regenerative braking is performed by the motor-generator based on a deceleration request from a driver, the hydraulic pressure supply unit supplies a hydraulic pressure based on a first hydraulic pressure and a second hydraulic pressure to the continuously variable transmission. The first hydraulic pressure is a hydraulic pressure to transmit an input torque input to the continuously variable transmission during the regenerative braking. The second hydraulic pressure is a hydraulic pressure to shift the continuously variable transmission during the regenerative braking.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: December 17, 2019
    Assignee: JATCO LTD
    Inventors: Hiroki Iwasa, Hironori Miyaishi, Tetsuya Izumi
  • Patent number: 10392709
    Abstract: A coated steel sheet includes a corrosion-resistant coating composed of at least one layer selected from the group consisting of a Ni layer, a Sn layer, an Fe—Ni alloy layer, an Fe—Sn alloy layer, and an Fe—Ni—Sn alloy layer disposed on at least one surface of a steel sheet, and an adhesive coating disposed on the corrosion-resistant coating, the adhesive coating containing Zr and further containing at least one metal element selected from the group consisting of Co, Fe, Ni, V, Cu, Mn, and Zn, in total, at a ratio by mass of 0.01 to 10 with respect to Zr. The coated steel sheet has excellent humid resin adhesion and corrosion resistance, in which streaky surface defects do not occur.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: August 27, 2019
    Assignee: JFE Steel Corporation
    Inventors: Yuka Miyamoto, Takeshi Suzuki, Hiroki Iwasa, Norihiko Nakamura, Masao Inose, Hisato Noro, Yoichi Tobiyama
  • Patent number: 10378644
    Abstract: Disclosed is a control apparatus for a vehicular transmission comprising: a vehicle speed sensor; an accelerator opening angle sensor; and a gear-shift control section (8D) of a CVTECU 8. The vehicle speed sensor includes: an output shaft rotation speed sensor (90) configured to detect a rotation speed (rotation numbers) of an output shaft (41) of the automatic transmission; road wheel rotation speed sensors configured to detect rotation speeds (rotation numbers) of four road wheels (90B through 90E); and a vehicle speed calculating section (8B) of CVTECU 8 configured to calculate the vehicle speed from the information of the road wheel rotation speeds when a preset predetermined condition as a condition under which vertical variations of the rotation speed of the output shaft are generated is established and calculate the vehicle speed from the output shaft rotation speed information if the predetermined condition is not established.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: August 13, 2019
    Assignee: JATCO LTD
    Inventors: Hiroki Iwasa, Tetsuya Izumi
  • Patent number: 10252319
    Abstract: A laminated steel sheet for a two-piece can body with a high strain level satisfying the following formulae, the polyester resin layer composing the laminated steel sheet having a center line surface roughness (Ra) of 0.2 ?m to 1.8 ?m: r1?r,0.1?r1/R?0.25, and 1.5?h/(R?r)?4 wherein h is the height of the two-piece can body, r is the maximum radius, r1 is the minimum radius, and R is the radius of the circular laminated steel sheet before forming having the same weight as the can body.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: April 9, 2019
    Assignee: JFE STEEL CORPORATION
    Inventors: Yasuhide Oshima, Junichi Kitagawa, Hiroki Iwasa, Katsumi Kojima, Hiroshi Kubo
  • Patent number: 10240672
    Abstract: When a switch condition where a shift of a continuously variable transmission is switched from a first shift that is any one of an upshift and a downshift to another second shift is satisfied, an integral term in the feedback control of the first shift is reduced to zero with a first predetermined gradient, an operation of an integral term in the feedback control of the second shift is started after the switch condition is satisfied and before the integral term in the feedback control of the first shift reaches zero, and the continuously variable transmission is shifted based on a sum of the integral term in the feedback control of the first shift and the integral term in the feedback control of the second shift.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: March 26, 2019
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Hiroki Iwasa, Ryu Sungpil, Hironori Miyaishi, Tetsuya Izumi
  • Publication number: 20190078685
    Abstract: The controller performs shift control of the transmission such that an actual pressure of a primary pressure becomes an indicating pressure. The controller includes a phase advance compensator which performs advance compensation of the indicating pressure, and a setting unit which sets an indicating pressure on which the advance compensation is performed by the phase advance compensator as the indicating pressure, in accordance with at least one of a rotation speed of a primary pulley, an input torque to a secondary pulley, a speed ratio, or a changing rate.
    Type: Application
    Filed: February 27, 2017
    Publication date: March 14, 2019
    Applicant: JATCO Ltd
    Inventors: Takurou KAWASUMI, Ken OKAHARA, Midori YAMAGUCHI, Masahiro YAMAMOTO, Hiroki IWASA, Hiroki KUMASHIRO, Masayuki SHIMIZU, Ryuuichi FURUKAWA, Kenichi MORI, Kazutaka ADACHI, Yutaka KANEKO, Hiroyuki ASHIZAWA
  • Patent number: 10207714
    Abstract: Control device for continuously variable transmission has continuously variable transmission mechanism (CVT) transmitting power with belt (7) wound around primary and secondary pulley (5, 6); torque convertor (2) having pump impeller (20), turbine runner (21) and lock-up clutch (2a); and control unit (10) controlling lock-up clutch (2a) to predetermined engagement state and controlling the CVT to predetermined transmission ratio, according to travelling condition.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: February 19, 2019
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Seiichiro Takahashi, Hiroki Iwasa, Hironori Miyaishi, Sunghoon Woo, Takaaki Matsui, Tomoaki Honma, Yoshio Yasui, Yuta Suzuki, Masayuki Mannen, Susumu Saitou
  • Publication number: 20180106361
    Abstract: Disclosed is a control apparatus for a vehicular transmission comprising: a vehicle speed sensor; an accelerator opening angle sensor; and a gear-shift control section (8D) of a CVTECU 8. The vehicle speed sensor includes: an output shaft rotation speed sensor (90) configured to detect a rotation speed (rotation numbers) of an output shaft (41) of the automatic transmission; road wheel rotation speed sensors configured to detect rotation speeds (rotation numbers) of four road wheels (90B through 90E); and a vehicle speed calculating section (8B) of CVTECU 8 configured to calculate the vehicle speed from the information of the road wheel rotation speeds when a preset predetermined condition as a condition under which vertical variations of the rotation speed of the output shaft are generated is established and calculate the vehicle speed from the output shaft rotation speed information if the predetermined condition is not established.
    Type: Application
    Filed: March 7, 2016
    Publication date: April 19, 2018
    Applicant: JATCO Ltd
    Inventors: Hiroki IWASA, Tetsuya IZUMI
  • Publication number: 20180080550
    Abstract: When a switch condition where a shift of a continuously variable transmission is switched from a first shift that is any one of an upshift and a downshift to another second shift is satisfied, an integral term in the feedback control of the first shift is reduced to zero with a first predetermined gradient, an operation of an integral term in the feedback control of the second shift is started after the switch condition is satisfied and before the integral term in the feedback control of the first shift reaches zero, and the continuously variable transmission is shifted based on a sum of the integral term in the feedback control of the first shift and the integral term in the feedback control of the second shift.
    Type: Application
    Filed: February 22, 2016
    Publication date: March 22, 2018
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Hiroki IWASA, Ryu SUNGPIL, Hironori MIYAISHI, Tetsuya IZUMI
  • Publication number: 20180079418
    Abstract: A vehicle control device for controlling a vehicle including an oil pump driven by a transmission of a rotation of the motor-generator; and a hydraulic pressure supply unit for supplying a hydraulic pressure to the continuously variable transmission. The hydraulic pressure is generated by regulating a pressure of an oil discharged from the oil pump. When a regenerative braking is performed by the motor-generator based on a deceleration request from a driver, the hydraulic pressure supply unit supplies a hydraulic pressure based on a first hydraulic pressure and a second hydraulic pressure to the continuously variable transmission. The first hydraulic pressure is a hydraulic pressure to transmit an input torque input to the continuously variable transmission during the regenerative braking. The second hydraulic pressure is a hydraulic pressure to shift the continuously variable transmission during the regenerative braking.
    Type: Application
    Filed: February 22, 2016
    Publication date: March 22, 2018
    Applicant: JATCO Ltd
    Inventors: Hiroki IWASA, Hironori MIYAISHI, Tetsuya IZUMI
  • Publication number: 20180080552
    Abstract: A hydraulic pressure controller includes belt sandwiching force increasing means. The belt sandwiching force increasing means increases a belt sandwiching force by a primary pulley and a secondary pulley on the basis of a braking force request from a driver, up to a predetermined value to prevent a belt from slipping due to a braking force. The belt sandwiching force increasing means increases the belt sandwiching force in a range of less than the predetermined value before the braking force request occurs.
    Type: Application
    Filed: February 18, 2016
    Publication date: March 22, 2018
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Hiroki IWASA, Hironori MIYAISHI, Tetsuya IZUMI
  • Publication number: 20180080553
    Abstract: The present invention is related to a vehicle including a motor-generator, a transmission, a shift hydraulic control unit, and a CVT control unit (CVTCU). When a downshift of the transmission is performed without an acceleration request from a driver, the CVTCU sets a pulley thrust at a secondary pulley on the basis of a first lower limit as a lower limit, which is a sum of a fundamental thrust and a first correction thrust. The CVTCU also sets a pulley thrust at a primary pulley on the basis of a second lower limit as a lower limit, which is a sum of the fundamental thrust and a second correction thrust.
    Type: Application
    Filed: February 18, 2016
    Publication date: March 22, 2018
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Hiroki IWASA, Hironori MIYAISHI, Sungpil RYU, Tetsuya IZUMI
  • Patent number: 9878707
    Abstract: A hybrid vehicle control device is provided for controlling a drive system. The hybrid vehicle control device is programmed to perform an engine start control using a motor/generator as an engine start motor when an engine start request is present. The hybrid vehicle control device includes a second clutch control section and an engine start control section. The second clutch control section completely disengages the second clutch. The engine start control section engages or slip engages of the first clutch, and performs engine start control resulting from performing an engine cranking operation, injecting air and fuel and igniting same. The hybrid vehicle control module disengages the first clutch and engages the second clutch during coasting/regenerating driving with the motor/generator while traveling in an electric vehicle mode when the engine start request is due to a driver input for an increase in a required driving force.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: January 30, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Ryosuke Ito, Takao Ando, Hiroki Iwasa
  • Patent number: 9879332
    Abstract: A method of manufacturing a high-strength steel sheet includes, on a mass percent basis, 0.03%-0.10% C, 0.01%-0.5% Si, 0.001%-0.100% P, 0.001%-0.020% S, 0.01%-0.10% Al, 0.005%-0.012% N, the balance being Fe and incidental impurities, and microstructures that do not contain a pearlite microstructure, wherein, when Mnf=Mn [% by mass]?1.71×S [% by mass], Mnf is 0.3 to 0.6, including: forming a slab by vertical-bending type continuous casting or bow type continuous casting, wherein surface temperature of a slab corner in a region where the slab undergoes bending deformation or unbending deformation is 800° C. or lower, or 900° C. or higher; forming a steel sheet by hot-rolling the slab followed by cold rolling; annealing the steel sheet after the cold rolling; and skinpass rolling at a draft of 3% or less after the annealing.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: January 30, 2018
    Assignee: JFE Steel Corporation
    Inventors: Takumi Tanaka, Katsumi Kojima, Makoto Aratani, Hiroki Iwasa