Patents Assigned to HITACHI ASTEMO, LTD.
  • Publication number: 20230035819
    Abstract: An object of the present invention is to realize lane deviation warning/control at an intersection, on a multilane road and in an environment where no lane dividing lines are present and GNSS accuracy is low.
    Type: Application
    Filed: November 20, 2020
    Publication date: February 2, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Hideyuki KUME, Hidehiro TOYODA
  • Publication number: 20230035370
    Abstract: A drive device for an electric motor according to the present invention includes a first relay that turns a power supply line on and off leading from a power supply to an electric motor, a resistor provided on a bypass line that bypasses the first relay, a second relay that turns the bypass line on and off, a relay control circuit that outputs a relay control signal common to the first relay and the second relay, and a delay unit that delays the turn-on timing based on the relay control signal of the first relay later than the turn-on timing based on the relay control signal of the second relay. This configuration makes it possible to add a function for suppressing an inrush current without increasing the number of output connectors of a relay control circuit.
    Type: Application
    Filed: December 7, 2020
    Publication date: February 2, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Shimon KISHIRA, Makoto KOBAYASHI
  • Publication number: 20230035063
    Abstract: A deviation between a detection result of an output current of an inverter and an actual current is suppressed. A current detection unit 7 detects a three-phase AC current output from an inverter 3 or input to the inverter 3. An inverter control device 1 controls the inverter 3 based on a current detection value based on a detection result of the three-phase AC current by the current detection unit 7 and a predetermined current command value. The inverter control device 1 corrects the current detection value so as to correct a detection error of the three-phase AC current generated due to a delay time of a filter 72 which is a filter element provided in the current detection unit 7.
    Type: Application
    Filed: December 8, 2020
    Publication date: February 2, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Takafumi HARA, Toshiyuki AJIMA, Akihiro ASHIDA, Kiyoshi KURODA, Yoshinoi AOSHIMA
  • Publication number: 20230031292
    Abstract: An electronic control device including a circuit substrate having a signal wiring and a ground wiring; at least one connector having a signal conductor and a ground conductor respectively connected to the signal wiring and the ground wiring of the circuit substrate on one end side and extending on the other end side; a housing including an accommodating portion that accommodates the circuit substrate and the at least one connector, in which a radio wave path through which a leakage electromagnetic wave propagates from one end on the circuit substrate side toward the other end on the side opposite to the circuit substrate side of the at least one connector is formed in an internal space at the periphery of the at least one connector; and a leakage electromagnetic wave attenuating structure provided between the housing and the at least one connector; where the leakage electromagnetic wave attenuating structure includes a plurality of conductors that are arrayed along a direction in which the leakage electromagn
    Type: Application
    Filed: November 24, 2020
    Publication date: February 2, 2023
    Applicant: HITACHI ASTEMO, LTD
    Inventors: Yuki Nakamura, Masahiro TOYAMA, Hiroki FUNATO, Hideyuki SAKAMOTO, Shina KAWAKITA
  • Patent number: 11565564
    Abstract: A suspension device includes: a damping device that damps a force generated between a vehicle body and a wheel of a vehicle; a determination unit that determines whether the vehicle is jumping, using an acceleration of the vehicle in a front-rear direction, an acceleration of the vehicle in a left-right direction, and an acceleration of the vehicle in a vertical direction; and a damping force control unit that increases a damping force of the damping device so as to be greater than the damping force generated when the determination unit does not determine that the vehicle is jumping, when the determination unit determines that the vehicle is jumping.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: January 31, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Yosuke Murakami
  • Patent number: 11565740
    Abstract: A steering device includes: a housing including a first planar surface, the housing being configured to accommodate a part of a rack shaft; an electric motor including a second planar surface facing the first planar surface, the electric motor including a bracket configured to support a rotary shaft; a tightening member configured to tighten the housing and the bracket in a state where the first planar surface and the second planar surface are mated; and a sealing member configured to provide sealing between the housing and the bracket at a position that is closer to the rotary shaft than the tightening member is. At least one of the first planar surface and the second planar surface is formed with a recess located between the tightening member and the sealing member and depressed from the at least one of the first planar surface and the second planar surface.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: January 31, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Yusuke Hamaguchi
  • Publication number: 20230021615
    Abstract: A vehicle control device that autonomously controls a vehicle so as not to cause rapid deceleration that leads to a deterioration in ride quality. The vehicle control device controls first and second deceleration, means that reduce a speed at a deceleration rate large than a deceleration rate of the first deceleration means. The vehicle control device includes a blind spot area detecting unit that detects a blind spot area of a sensor that recognizes an external environment, and a blind spot object estimating unit that estimates a blind spot object that is a virtual moving body hidden in the blind spot area. When a vehicle approaches the blind spot area at a speed reduced by the first deceleration means, the vehicle is decelerated by the second deceleration means when a type of a moving body detected by the sensor is different from a type of the blind spot object.
    Type: Application
    Filed: November 20, 2020
    Publication date: January 26, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Ryoh INABA, Trongmun JIRALERSPONG, Hidehiro TOYODA
  • Publication number: 20230027587
    Abstract: Provided is a program updating process according to which even when power supply to an electronic control unit stops during program updating, invalid data's remaining in a storage area at completion of program updating is prevented without acquiring a power supply status of a vehicle. An electronic control unit includes a communication interface, a nonvolatile memory, and an arithmetic processing unit that executes a program. The nonvolatile memory includes a program storage area and a data storage area. The program storage area has a program updating process unit that carries out an updating process, and a program updating target unit that stores an updating program. The arithmetic processing unit reads the program updating process unit as the program and executes the program, divides an updating program received by the communication interface into divided updating programs each having a given size, and writes each of the divided updating programs to the program updating target unit.
    Type: Application
    Filed: December 8, 2020
    Publication date: January 26, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Takaaki NOKAIDO, Yusuke KOGURE
  • Publication number: 20230024138
    Abstract: A rotary electric machine includes a stator including a coil, and a rotor in an inner peripheral side of the stator. The rotor core comprises a soft magnetic metal and a magnet within a magnet insertion hole, a first magnet stopper on a q axis side of the magnet in the magnet insertion hole, a magnet accommodation between the first magnet stopper on both sides of the magnet insertion hole, a first space portion communicating with the magnet insertion hole, a second space portion whose distance from the magnet is equal to or less than a thickness of the magnet and a radial length of a magnetic pole center is long, the second space portion formed on an inner peripheral side relative to the magnet, and a third space portion that has a convex shape on an inner peripheral side of a q axis of the magnet.
    Type: Application
    Filed: December 15, 2020
    Publication date: January 26, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Kazutami TAGO, Itsuki SHIMURA, Junnosuke NAKATSUGAWA, Wataru YOKOYAMA, Ippei SUZUKI
  • Publication number: 20230029119
    Abstract: Provided is a discharge valve mechanism capable of improving responsiveness when a discharge valve is opened, and a high-pressure fuel supply pump including the discharge valve mechanism. A discharge valve mechanism 500 includes a valve seat portion 51 having a primary-side flow path, a valve body 52 which can be seated on and separated from the valve seat portion 51, and a guide portion 542a which is formed to be slidable on an outer surface of the valve body 52 and guides movement of the valve body 52 in a contacting/separating direction with respect to the valve seat portion 51. The guide portion 542a includes a portion in which a gap from the outer surface of the valve body 52 is set to a predetermined value or less.
    Type: Application
    Filed: December 11, 2020
    Publication date: January 26, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Kenichiro TOKUO, Hiroyuki YAMADA, Kiyotaka OGURA, Shingo TAMURA, Yuto ISHIZUKA
  • Publication number: 20230023345
    Abstract: The resin material 336 is arranged in a first region 421 surrounded by the fin base 440, the inclined portion 343 of the cover member 340, and the outermost peripheral heat dissipation fins 334 arranged on the outermost peripheral side. Then, the resin material 336 is caused to protrude to the first region 421. That is, the resin material 336 is arranged in the first region 421. In a cross section perpendicular to the refrigerant flow direction (Y direction), a cross-sectional area of the first region 421 is larger than an average cross-sectional area 423 of the adjacent heat dissipation fins 331. Then, a cross-sectional area of a second region 422 formed between the resin material 336 arranged in the first region 421 and the outermost peripheral heat dissipation fin 334 arranged on the outermost peripheral side is smaller than the average cross-sectional area 423 of the heat dissipation fins.
    Type: Application
    Filed: November 27, 2020
    Publication date: January 26, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Nobutake TSUYUNO, Akira MATSUSHITA, Toru KATO
  • Patent number: 11560061
    Abstract: A motor drive device includes a power conversion circuit that drives an AC motor and a controller that controls the power conversion circuit. The controller includes a command current calculation unit generating a command current according to command torque for the AC motor and a current control unit that performs feedback control for adjusting a current applied to the AC motor to the command current. The controller also includes a control gain setting unit that calculates a control gain used for the feedback control based on the command torque and sets the calculated control gain in the current control unit. The control gain setting unit performs control such that a time from a decrease of an absolute value of the command torque to switching of the control gain is longer than a time from an increase of the absolute value of the command torque to switching of the control gain.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: January 24, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Noriya Nakao, Fumikazu Takahashi, Kenichi Yoshida
  • Patent number: 11560926
    Abstract: A power transmission shaft includes: a bearing including a cylindrical portion, an internal spline portion, and an internal spline side annular groove including a bottom surface, and a first side wall and a second side wall, the first side wall which includes a first inclination surface inclined with respect to the rotation axis of the shaft portion, and on which the circlip is abutted in a state where a radius of the circlip is decreased within the internal spline side annular groove, and the second side wall on which the circlip is abutted in the state where the radius of the circlip is decreased within the internal spline side annular groove.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: January 24, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Xiaojin Zhu, Yasutomo Mabe, Kenichiro Ishikura
  • Patent number: 11560106
    Abstract: A control device for a vehicle-mounted apparatus, the control device includes: a second CPU state judging section provided to the first CPU, and configured to judge a state of the second CPU based on a state of the inter-CPU communication and a voltage value of the electric power supplied from the first electric power supply section, or the second reset signal; and a first CPU state judging section provided to the second CPU, and configured to judge a state of the first CPU based on the state of the inter-CPU communication and a voltage value of the electric power supplied from the second electric power supply section, or the first reset signal.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: January 24, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Mitsuo Sasaki, Masaki Itabashi, Tadashi Suganuma
  • Publication number: 20230015466
    Abstract: To provide a vehicle control system that is capable of planning a trajectory that can ensure more visibility and enables safe traveling when an invisible range of a sensor exists. A vehicle control system that plans a target trajectory of a vehicle based on recognition information from an external environment sensor, the vehicle control system including a recognizing unit that recognizes an object at a periphery of the vehicle based on the recognition information; and a trajectory planning unit that plans the target trajectory such that an actual detection range of the external environment sensor becomes wide when the recognizing unit recognizes the object.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 19, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Trongmun JIRALERSPONG, Ryoh INABA, Hidehiro TOYODA
  • Publication number: 20230017402
    Abstract: Leakage of radio-frequency radiation noise radiated from a noise source to the outside is suppressed. An electronic control device 1 includes a printed board 101 having signal grounds 104a, 104b, and 104c, and a frame ground 103a, a housing 100 accommodating the printed board 101, and a connector 105 mounted on the printed board 101. The electronic control device 1 includes a first coupling portion 301 that AC-couples the signal ground 104a with the frame ground 103a and a second coupling portion 301 that electrically couples the frame ground 103a with the housing 100, and the first coupling portion 301 and the second coupling portion 301 are provided between the connector 105 and an electronic circuit 110 on the printed board 101.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 19, 2023
    Applicant: HITACHI ASTEMO, LTD
    Inventors: Kiyoharu OZAKI, Toshiaki TAKAI
  • Publication number: 20230012843
    Abstract: An autonomous driving system for a vehicle reduces the amount of computations for object extraction carried out by a DNN, using information a traveling environment or the like. An information processing apparatus including a processor, a memory, and an arithmetic unit that executes a computation using an inference model is provided. The information processing apparatus includes a DNN processing unit that receives external information, the DNN processing unit extracting an external object from the external information, using the inference model, and a processing content control unit that controls processing content of the DNN processing unit. The DNN processing unit includes an object extracting unit that executes the inference model in a deep neural network having a plurality of layers of neurons, and the processing content control unit includes an execution layer determining unit that determines the layers used by the object extracting unit.
    Type: Application
    Filed: December 15, 2020
    Publication date: January 19, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Sakie KOMATSU, Hiroaki ITO, Koji MAEDA
  • Publication number: 20230015460
    Abstract: An electric circuit device includes: a first electric component; a first case that accommodates the first electric component and has a cooling channel for cooling the first electric component and a discharge port of the cooling channel; a second case that accommodates a second electric component and has a communication channel that communicates with a discharge port of the cooling channel; a first seal portion that is provided in a peripheral edge part of a discharge port of the cooling channel and seals the first case and the first electric component; a second seal portion that is provided outside the first seal portion with respect to a discharge port of the cooling channel and seals the first case and the first electric component; a through hole that is provided in the first case between the first seal portion and the second seal portion of and penetrates the first case from the first electric component side to the second case side; and a wall that is provided on one of the first case and the second case t
    Type: Application
    Filed: December 10, 2020
    Publication date: January 19, 2023
    Applicants: HITACHI ASTEMO, LTD., HONDA MOTOR CO., LTD.
    Inventors: Akihiro GOTO, Keiichi TADOKORO, Morio KUWANO, Masaru KAMOSHIDA, Fusanori NISHIKIMI, Tomoyuki SUZUKI
  • Publication number: 20230014164
    Abstract: A coil spring jig includes a spring support portion where one end of a coil spring is capable of being placed, a plurality of displacement regulating portions extending along an axis of the coil spring from the spring support portion with the coil spring supported by the spring support portion as a reference, capable of abutting against an outer peripheral surface of the coil spring, and regulating displacement of the coil spring in a radial direction of the coil spring, and a lid portion supported by the displacement regulating portions and capable of keeping the coil spring in a compressed state by sandwiching the coil spring together with the spring support portion.
    Type: Application
    Filed: September 15, 2022
    Publication date: January 19, 2023
    Applicants: Hitachi Astemo, Ltd., HONDA MOTOR CO., LTD.
    Inventors: Hirokatsu KAMEDA, Toshihiro OGAWA, Shinji KASATORI, Atsushi MURAKAMI, Hideki KATO, Kenji NAGAOKA
  • Publication number: 20230016629
    Abstract: Achieved is a load drive device capable of suppressing local concentration of temperature at the time of absorbing a counter electromotive force of an inductive load while suppressing a size of a power transistor. The load drive device includes a first transistor connected between a first control electrode and an inductive load. Further, the load drive device includes an active clamp circuit that becomes conductive when a terminal voltage of a second control electrode between the first transistor and the inductive load exceeds a threshold. Furthermore, the load drive device includes a second transistor connected to the second control electrode and connected in parallel to the first transistor.
    Type: Application
    Filed: December 11, 2020
    Publication date: January 19, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Keishi KOMORIYAMA, Yoichiro KOBAYASHI