Patents Assigned to Hitachi Automotive Systems, Ltd.
  • Publication number: 20200256306
    Abstract: Provided is an internal combustion engine ignition device capable of preventing an output signal level of a drive circuit from changing sharply when shifting from a normal ignition operation mode to a protection operation mode while reducing the cost of dedicated components and the like. An internal combustion engine ignition device of the present invention includes a first differential circuit for outputting a drive signal in a first mode and a second differential circuit for outputting a drive signal in a second mode, where the first differential circuit and the second differential circuit each include a transistor and are configured such that a drive current for supplying the drive signal flows through the transistor which is common between the first mode and the second mode.
    Type: Application
    Filed: January 8, 2019
    Publication date: August 13, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masato KITA, Yoichiro KOBAYASHI
  • Publication number: 20200259401
    Abstract: The degree of freedom in attachment of a temperature sensor is improved. A stator for a rotating electric machine includes: a temperature sensor; and a temperature sensor holder that grips a stator winding portion at a coil end (a portion of a stator winding protruding from both ends of a stator core) and the temperature sensor. The temperature sensor holder can be deformed in a direction other than a gripping direction in addition to the gripping direction.
    Type: Application
    Filed: September 7, 2018
    Publication date: August 13, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yuichiro BABA, Mitsuaki IZUMI
  • Publication number: 20200256445
    Abstract: A strain wave gearing apparatus includes a rigid internal gear including a plurality of teeth on an inner periphery thereof, a cylindrical flexible external gear including a plurality of teeth on an outer periphery thereof, and a wave generator having an elliptic outer periphery. A contact of the outer periphery of the wave generator with an inner periphery of the external gear causes the external gear to be elliptically distorted and meshed with the internal gear at a part of the teeth of the external gear in a direction of a major axis. A rotation of the wave generator causes a position of the mesh to be moved in a circumferential direction. The elliptic outer periphery of the wave generator includes a major axis in common with a reference ellipse, and is different from the reference ellipse in terms of a shape of at least a part thereof in the circumferential direction.
    Type: Application
    Filed: September 13, 2018
    Publication date: August 13, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ken Bryan IKEGUCHI, Masato MANAKO
  • Publication number: 20200258853
    Abstract: A power conversion device includes first and second power semiconductor elements, and a circuit for transferring a drive signal of the first and second power semiconductor elements. The circuit board includes a first emitter wire which is formed along an arranging direction of the first power semiconductor element and the second power semiconductor element, a first gate wire which is disposed between the first power semiconductor element and the first emitter wire, a second gate wire which is disposed between the second power semiconductor element and the emitter wire, a third gate wire which is disposed to face the first gate wire and the second gate wire with the emitter wire interposed between the third gate wire and the first gate wire and the second gate wire, and a first gate resistor which connects the first gate wire and the third gate wire over the first emitter wire.
    Type: Application
    Filed: July 27, 2018
    Publication date: August 13, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Akihiro NAMBA, Takashi HIRAO, Masami OONISHI
  • Publication number: 20200258823
    Abstract: An object of the invention is to improve productivity while suppressing a reduction in a heat radiating performance of a power semiconductor device. According to the invention, there is provided a manufacturing method of a power semiconductor device which includes a conductive member having a first surface and a second surface provided on a side opposite to the first surface and a power semiconductor element which is connected to the conductive member through a bonding material.
    Type: Application
    Filed: July 9, 2018
    Publication date: August 13, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takashi KUBOKI, Keiji KAWAHARA, Takeshi KONNO
  • Patent number: 10739213
    Abstract: In order to provide a temperature and humidity sensor with improved reliability, the temperature and humidity sensor in which all or part of a case of the temperature and humidity sensor is inserted into a main duct for causing gas to pass through and which detects humidity of the gas, includes: a first sub-passage configured as a part of the case, a part of the gas passing through the main duct flowing in substantially the same direction as a flow in the main duct; a throttle section provided between an inlet and an outlet of the first sub-passage and on an inner surface of the first sub-passage, the throttle section having a throttle whose cross-sectional area is smaller than an average cross-sectional area of the entire first sub-passage; and a second sub-passage which connects an upstream side and a downstream side of the throttle section and is different from the first sub-passage.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: August 11, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroaki Hoshika, Takayuki Saito, Takayuki Yogo, Takahiro Miki, Takeo Hosokawa
  • Patent number: 10738691
    Abstract: The present invention relates to a control device and to a control method for a vehicle drive mechanism including a moving body having a movability range regulated by two stoppers, and a sensor which senses a position of the moving body. The control device of the present invention learns an output of the sensor corresponding to a contact state of a high-rigidity stopper, and limits, to a lower level, an operation variable of the actuator for moving the moving body toward a low-rigidity stopper along with an increase in an amount of change in the output of the sensor from the contact state of the high-rigidity stopper. Then, the control device learns the output of the sensor corresponding to the contact state of the low-rigidity stopper, and controls the actuator based on the output of the sensor learned at both the stopper positions.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: August 11, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Naoki Okamoto, Yuya Shinozaki
  • Publication number: 20200248663
    Abstract: To provide a high-pressure fuel pump capable of ensuring good magnetic properties and reliability for cracking. Therefore, the fixed core 39 is precipitation hardening type ferritic stainless steel (ferritic precipitation hardening type metal). The anchor 36 is precipitation hardening type ferritic stainless steel attracted by the magnetic attraction force of the fixed core 39. The outer core 38 has an inner peripheral surface on which the outer peripheral surface of the anchor 36 slides. The seal ring 48 is formed of a material having hardness lower than that of the fixed core 39 and the anchor 36, and connects the fixed core 39 and the outer core 38.
    Type: Application
    Filed: October 29, 2018
    Publication date: August 6, 2020
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Kenichiro TOKUO, Satoshi USUI, Ryo KUSAKABE
  • Publication number: 20200247458
    Abstract: A steering apparatus includes, at a gear housing, a rack bar containing portion movably containing a rack bar configured to turn a turning target wheel and made from a metallic material, and an engagement protrusion portion provided between a bracket portion and a frame of a vehicle. The bracket portion is provided at the rack bar containing portion. The bracket portion is made from a metallic material. The bracket portion includes a cylindrical portion. The bracket portion is coupled with the frame of the vehicle made from a metallic material. The engagement protrusion portion is made from a metallic material having a higher degree of hardness than the metallic material of the bracket portion and the metallic material of the frame of the vehicle, and protrudes toward a vehicle frame side on which the frame of the vehicle is located.
    Type: Application
    Filed: July 11, 2018
    Publication date: August 6, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masatoshi ENOMOTO, Osamu YOSHIDA
  • Publication number: 20200249937
    Abstract: An information update apparatus that updates first information stored in a vehicle control apparatus to second information. The information update apparatus includes: a download control unit that receives an update package including an update body that is a difference between the first information and the second information or the second information, procedure information including a procedure of updating the first information to the second information using the update body, and an activation condition that is a condition of starting updating the first information to the second information; and an event management unit that acquires a state of a vehicle on which the vehicle control apparatus and the information update apparatus are mounted, and causes an update execution unit to execute the update based on the procedure information when the state of the vehicle matches the activation condition.
    Type: Application
    Filed: October 5, 2018
    Publication date: August 6, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hidetoshi TERAOKA, Hiroki YAMAZAKI, Masashi YANO
  • Patent number: 10731615
    Abstract: Responsiveness of an electromagnetic flow-rate control valve provided for closing a suction valve is improved and a discharge flow rate is controlled to a desired value. A flow-rate control valve includes a fixed core arranged on an inner circumferential side of a coil, a yoke arranged on an outer circumferential side of the coil, and a cover portion opposed to the coil in an axial direction, in which the fixed core has an enlarged portion in contact with the cover portion in the axial direction and enlarging toward the coil, and the cover portion is regulated in the axial direction only by a contact portion with the fixed core.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: August 4, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Kenichiro Tokuo, Satoshi Usui, Minoru Hashida, Masayuki Suganami, Atsushi Hohkita, Eiichi Kubota, Daisuke Kitajima, Hiroshi Horie
  • Patent number: 10731594
    Abstract: Provided is a control device of a fuel injection device which can stabilize a behavior of a valve even when a voltage of a voltage source varies, and can reduce a deviation of an injection amount. The fuel injection device includes a valve and a coil which generates a magnetic attraction force to attract a movable element which drives the valve. A control device applies a predetermined voltage to the coil on the basis of an injection pulse, causes a drive current to flow to the coil until the drive current reaches a maximum current, drives the valve by attracting the movable element, and injects fuel. The drive current flowing to the coil is lowered from the maximum current before the valve reaches a desired maximum lift position, and a constant voltage lower than a predetermined voltage or 0 V is continuously applied to the coil until the valve reaches the desired maximum lift position.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: August 4, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Masayuki Saruwatari, Noriyuki Maekawa
  • Patent number: 10731551
    Abstract: Provided is a balancer device for an internal combustion engine capable of effectively decreasing gear rattle between gears of a drive mechanism. A balancer drive gear and a balancer driven gear are arranged on a second end side of a drive-side balancer shaft and a second end side of a driven-side balancer shaft, respectively, and an oil pump is arranged on a first end side of the driven-side balancer shaft via the drive mechanism.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: August 4, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroaki Tamashiro, Hidenori Tasaka
  • Patent number: 10731616
    Abstract: A high-pressure fuel supply pump comprising a suction valve disposed on a suction side of a pressurizing chamber, an engagement member having a protrusion part that protrudes toward the outer periphery and biasing the suction valve by use of the force of a spring, a stator for generating a magnetic attraction force, and a plunger drawn by the magnetic attraction force and driving the engagement member toward the stator by engaging with the protrusion part, the fuel supply pump being configured so that the area of the fuel passage is smallest between the outer periphery of the protrusion part and the inner periphery of the plunger, and so that a tapered section whereby the area of the flow path increases from the portion where the area of the passage is smallest toward the pressurizing chamber or toward the suction valve side is formed.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: August 4, 2020
    Assignee: Hitachi Automotive Systems Ltd.
    Inventors: Yuitsu Kodama, Yukihiro Yoshinari, Kenichiro Tokuo, Yuuki Takahashi
  • Patent number: 10730503
    Abstract: This invention provides a secure self-driving system or drive-assisting system. A drive control system of the present invention has an image recognition unit for detecting the peripheral environment of a vehicle and a drive control apparatus that controls driving of the vehicle, characterized by having a peripheral environment storage unit for storing the peripheral environment of the vehicle and by changing a mode of drive control performed by the drive control apparatus on the basis of a detection performance status of the image recognition unit obtained on the basis of information about the peripheral environment stored in the peripheral environment storage unit and information detected by the image recognition unit.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: August 4, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takashi Okada, Taisetsu Tanimichi
  • Patent number: 10732062
    Abstract: To provide a high-performance semiconductor sensor device and a method for manufacturing the semiconductor sensor device. This semiconductor sensor device has a sensor chip, and a first thin film formed on the sensor chip, said sensor chip being mechanically connected, via the first thin film, to a second thin film formed on a base formed of a polycrystalline material.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: August 4, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takeshi Konno, Hiroshi Kikuchi, Kentarou Miyajima, Munenori Degawa
  • Publication number: 20200239065
    Abstract: Heat radiation base body 23 that is adjacent to electric motor unit EM and extends in direction of rotation shaft 50 of electric motor is provided close to rotation shaft 50 of electric motor. Board 24 of one electronic control unit of redundant system is fixed to heat radiation base body along direction in which heat radiation base body 23 extends with thermal conduction to heat radiation base body 23 allowed. Board 26 of the other electronic control unit of redundant system is fixed to heat radiation base body so as to face to board 24 of one electronic control unit of redundant system, with thermal conduction to heat radiation base body 23 allowed. Size reduction of electric drive device in radial direction can be achieved. Since heat radiates to housing of electric motor unit through heat radiation base body, heat from board can radiate efficiently to the outside.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Masao FUJIMOTO
  • Publication number: 20200238972
    Abstract: An electrode of an ignition plug at the time of cooling start is heated to suppress generation of hydrocarbons at the time of cooling start of an internal combustion engine, and to reduce a production cost of an exhaust catalyst. Therefore, an ignition control unit 83 is provided to control a discharge of an ignition plug 200 provided in a cylinder 150. In a first combustion cycle after the operation of an internal combustion engine 100 is started, the ignition control unit 83 performs a discharge of the ignition plug 200 in a state where fuel in the cylinder 150 is not injected from a fuel injection valve 134 into the cylinder 150.
    Type: Application
    Filed: October 15, 2018
    Publication date: July 30, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Eiichirou OOHATA
  • Publication number: 20200243470
    Abstract: A control unit that controls a motor includes a semiconductor device, the semiconductor device includes a semiconductor package including a plurality of first electrodes, a wiring board including a plurality of second electrodes arranged so as to correspond to each of the plurality of first electrodes, and solder joints connecting the plurality of first electrodes and the plurality of second electrodes, and a tip end of a second electrode arranged at an outermost corner of the wiring board is located outside an outer peripheral end of the semiconductor package.
    Type: Application
    Filed: September 11, 2018
    Publication date: July 30, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masako KATO, Shinya KAWAKITA
  • Patent number: D892193
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: August 4, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Keisuke Masuda, Yoshiyuki Sasada