Patents Assigned to HITACHI ASTEMO, LTD.
  • Publication number: 20240060782
    Abstract: The present disclosure provides a route conversion apparatus which enables, in a case where a first route based on first map data is converted into a second route based on second map data in a range which is narrower than a section of an electronic map, an error of the converted second route to be detected, and conversion into a correct second route to be performed. The route conversion apparatus 100 includes a route conversion unit 122a that generates a second route RT2 based on location reference information LRI of a first route RT1, a storage unit 121 that stores a route verification model RVM, and a route verification unit 122b that inputs the second map data MD2, the location reference information LRI, and the second route RT2 to the route verification model RVM to verify whether the second route RT2 is correct or incorrect.
    Type: Application
    Filed: September 2, 2021
    Publication date: February 22, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Tomoaki WATAHIKI, Shinichi AMAYA
  • Publication number: 20240063704
    Abstract: An electromagnetic actuator device reduces pulsation and improves thrust, and includes: a magnet; and an armature that moves relative to the magnet. The armature includes: a plurality of teeth formed in a relative movement direction; a plurality of slots between the plurality of teeth; a yoke connecting the plurality of teeth; and a winding around the plurality of slots. The magnet includes a plurality of magnet portions facing the plurality of teeth via a gap and are disposed in the relative movement direction. A relationship between a minimum sectional area Sc1 of one tooth end portion of the armature and a minimum sectional area Sc2 of the other tooth end portion is Sc1>Sc2; and a relationship between the minimum sectional area Sc2 of the other tooth end portion and a sectional area Sy of the yoke in a direction crossing the relative movement direction is Sc2?Sy.
    Type: Application
    Filed: October 15, 2021
    Publication date: February 22, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Ryosuke HOSHI, Yasuaki AOYAMA, Nobuyuki ICHIMARU
  • Patent number: 11904896
    Abstract: Provided is a vehicle control device that can ensure riding comfort or safety. A vehicle control device includes a driving plan calculation unit that calculates a drivable area, which is a space in which an own vehicle is safely drivable, based on a driving environment around the own vehicle and a destination of the own vehicle; and a vehicle motion control unit that calculates a target track including a route and a velocity satisfying a predetermined riding comfort condition in the drivable area calculated by the driving plan calculation unit and controls the own vehicle so as to follow the target track.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: February 20, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Ryoh Inaba, Toshiharu Sugawara, Hidehiro Toyoda
  • Patent number: 11905906
    Abstract: Provided is a load drive device for controlling a fuel injection device for a vehicle engine and capable of checking an operation of the fuel injection device with high reliability without actually injecting fuel before starting the engine.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: February 20, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Koichi Tsukio
  • Patent number: 11906014
    Abstract: This assembly includes a plurality of stacked circular members, and a fixing pin that is disposed inside each of the circular members to arrange and integrate each of the circular members in an axial direction thereof. The fixing pin includes a shaft portion extending in the axial direction, a flange portion extending radially outward from one end side of the shaft portion, a recessed portion that is provided on an end face of the shaft portion on the other side and has a non-circular cross-section orthogonal to the axial direction, and one or a plurality of protruding portions that are provided on an outer circumferential portion of the shaft portion on the other end side and protrude radially outward from an inner circumferential surface of each of the circular members.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: February 20, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Hiroyuki Matsumoto, Satsuki Yamamoto, Chigaya Sekine
  • Patent number: 11904949
    Abstract: A vehicular steering device includes a turning shaft, a housing storing therein the turning shaft, a stopper provided at a shaft end of the turning shaft, and an annular elastic body. An opening of the housing is formed in a U-shaped cross-sectional shape and in an annular shape opened toward the stopper by an external cylinder portion and an internal cylinder portion. The elastic body includes a first elastic portion and a second elastic portion. The first elastic portion is supported by an inner circumferential surface of the external cylinder portion and the bottom surface, and is provided with a first clearance from an outer circumferential surface of the internal cylinder portion. The second elastic portion extends toward the stopper from the first elastic portion, and is provided with a second clearance larger than the first clearance from the inner circumferential surface of the external cylinder portion.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: February 20, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Satoshi Enomoto
  • Patent number: 11908199
    Abstract: Image data captured from a traveling vehicle is considered, and it is not possible to reduce the transmission band of the image data. It is assumed that a radar 4 mounted in a traveling vehicle 10 detects a certain distant three-dimensional object at a time T in a direction of a distance d1 [m] and an angle ?1. Since the vehicle 10 travels at a vehicle speed Y [km/h], it is predicted that a camera 3 is capable of capturing the distant three-dimensional object at a time (T+?T) and an angle ?1 or at a distance d2 [m]. Therefore, if a control unit 2 outputs a request to the camera 3 in advance, so as to cut out an image of the angle ?1 or the distance d2 [m] at the time (T+?T), when the time (T+?T) comes, the camera 3 transfers a whole image and a high-resolution image being a cutout image of only a partial image, to the control unit 2.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: February 20, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Tetsuya Yamada, Teppei Hirotsu, Tomohito Ebina, Kazuyoshi Serizawa, Shouji Muramatsu
  • Patent number: 11905948
    Abstract: In a variable displacement type oil pump, a swing member accommodates a pump forming member, and swings to vary a quantity of change of a volumetric capacity of each pump chamber. A biasing member biases the swing member in a direction to increase the quantity of change of the volumetric capacity of each pump chamber. A first control oil chamber applies a first torque to the swing member in a direction to reduce the quantity of change of the volumetric capacity of each pump chamber. A second control oil chamber applies a second torque to the swing member in a direction to increase the quantity of change of the volumetric capacity of each pump chamber, wherein the second torque is larger than the first torque. A switching mechanism switches between supply and drain of working oil with respect to the second control oil chamber.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 20, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Koji Saga, Yasushi Watanabe, Hideaki Ohnishi, Atsushi Naganuma
  • Patent number: 11907103
    Abstract: An appropriate test environment is selected while preventing test cases from being detained therein. A test environment determination device includes: an element selection unit that selects one or more test targets and one or more test environments for executing a test case based on target requirements described for specifications of an electronic control unit, which is a test target, and environment requirements described for specifications of a test environment for simulating an external environment of the test target; an environment operation information acquisition unit that acquires operation information on the test environments; and an environment selection unit that selects a combination of the selected test target and the selected test environment based on the acquired operation information.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: February 20, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Masashi Mizoguchi, Takahiro Iida, Toru Irie, Yoshimi Yamazaki
  • Publication number: 20240055930
    Abstract: In an electronic control device E1 according to the present invention, a first board 50 and a second board 60 are connected to each other via connection members 801, 802. Thus, with the connection members 801, 801, it is possible to fix the first board 50 and the second board 60 without sacrificing areas for mounting electronic components on the first board 50 and the second board 60. Accordingly, it is possible to ensure sufficient mounting areas on the first board 50 and the second board 60, which contributes to downsizing the electronic control device E1.
    Type: Application
    Filed: December 10, 2021
    Publication date: February 15, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Hiroshi SATO, Kohtaro SHIINO, Yuichi YANAGISAWA, Susumu KANEKO, Masao FUJIMOTO
  • Publication number: 20240051192
    Abstract: A cover (5) of an electronic device has side walls (8) and a ceiling wall (9), and is molded by injection molding using a mold. The ceiling wall (9) has a flat plate shape. Disk-shaped thick portions (21) that locally protrude inward so as to be relatively thicker than an adjacent normal portion of the ceiling wall (9) are provided at a plurality of positions of the ceiling wall (9) corresponding to respective positions of ejection by ejection pins (25). Although a circular dent (22) is formed at a middle of the thick portion (21) due to the thick portion (21) being pressed by a tip of the ejection pin (25), even at this dent (22) portion, a thickness equal to or greater than that of the normal portion of the ceiling wall (9) is secured.
    Type: Application
    Filed: December 15, 2021
    Publication date: February 15, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Yudai MIYAZAWA, Kumiko YOSHINAGA, Kentaro YAMANAKA
  • Publication number: 20240057302
    Abstract: A heat exchange device that is formed in a substantially rectangular shape and that cools a power semiconductor element, and a power conversion device comprising the heat exchange device, the heat exchange device including: a fin formation region in which cooling water flows in a transverse direction; and a buffer region formed in a lamination direction and facing the fin formation region, a partition wall being interposed therebetween, wherein an inlet and an outlet for the cooling water are respectively formed at at least one of both ends in a longitudinal direction, a flow path pit connecting the fin formation region and the buffer region is formed at both ends in the transverse direction, and the buffer region has a partition that divides the cooling water flowing in from the inlet and the cooling water flowing toward the outlet, and the inlet and the outlet are respectively connected to the fin formation region via the flow path pit.
    Type: Application
    Filed: September 29, 2021
    Publication date: February 15, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Yusuke TAKAGI, Yujiro KANEKO
  • Publication number: 20240053229
    Abstract: An object of the present invention is to mitigate an influence of a physical quantity other than strain of a tire on a measurement result of a strain sensor and to improve measurement accuracy of the strain sensor. A strain amount detection device according to the present invention calculates an estimation value of a load applied to a tire by using data describing a relationship among an actually measured strain amount, a tire air pressure, a vehicle speed, a tire temperature, and a tire load.
    Type: Application
    Filed: August 30, 2021
    Publication date: February 15, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Fumio YUKI, Takeo HOSOKAWA, Kenji YOSHIHARA, Tsukasa TAKAHASHI, Hiroyuki ABE
  • Patent number: 11901837
    Abstract: A power control unit includes a power device, a heat dissipation member disposed to face the power device with an insulating resin member interposed therebetween, and a plurality of plate-shaped bus bars each of which has one end connected to the power device, in which a plurality of input bus bars connected to an input terminal of the power device are provided as the bus bar, and at least one of the plurality of input bus bars is erected so that a direction along a plate width is aligned with a direction along a normal line of a surface of the heat dissipation member facing the power device, and is disposed with respect to the heat dissipation member with the insulating resin member interposed therebetween.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: February 13, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Kazunari Kurokawa, Takuma Kato, Masahiro Shimada, Morifumi Shigemasa, Akihiro Suzuki
  • Patent number: 11898615
    Abstract: A cylinder apparatus is provided with a stopper mechanism that operates when a piston rod extends and moves toward an upper end portion in an inner cylinder. This stopper mechanism includes a second cylinder provided movably relative to the piston rod and including a bottom portion on an upper end side in the inner cylinder and a cylinder portion extending from the bottom portion toward a lower end side, and a second piston provided so as to be able to move along with a movement of the piston rod to be fitted to the second cylinder. While being configured in this manner, the cylinder apparatus is configured in such a manner that a spring member 21 is provided between the second cylinder and a rod guide.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: February 13, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Toshihiro Inuzuka, Urban Anta Carlos, Atsushi Maeda, Koji Minamino, Aakash Patwa
  • Patent number: 11897449
    Abstract: A vehicle control system includes a transmission unit, first and second sources, as well as first, second, and third control units. The first control unit controls the transmission unit. The first source inputs energy to the transmission unit. The second source inputs energy to the transmission unit. The second control unit controls the first source. The third control unit controls the second source. The first control unit has a function of continuing an operation when a failure occurs. The second control unit and the third control unit have a common cause failure measure. The function mixes energy from different sources and transmits energy to the driving wheel.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: February 13, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Nobuyasu Kanekawa, Atsushi Arata
  • Patent number: 11898508
    Abstract: Provided is an internal combustion engine control device capable of appropriately correcting a flow rate of EGR gas. Therefore, an internal combustion engine control device 20 includes moisture amount calculation units 301 and 302, a dew condensation calculation unit 303, and an EGR correction unit 304. The moisture amount calculation unit 301 calculates a total moisture amount contained in the mixed gas. The dew condensation calculation unit 303 calculates a dew condensation generation amount WQcon in an intercooler based on the total moisture amount. The EGR correction unit 304 corrects a flow rate of the EGR gas based on the dew condensation generation amount WQcon.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: February 13, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Shinya Matohara, Yoshihiko Akagi, Kazuhiro Oryoji
  • Patent number: 11901847
    Abstract: A controller in a motor control device includes an integral operation unit 606A (608A) that performs an arithmetic operation for a d(q)-axis integrated value Id** (Iq**) through integral control performed on a d(q)-axis current deviation ?Id (?Iq) and is configured to perform an arithmetic operation for a d(q)-axis voltage command value for controlling an output voltage of an inverter of a three-phase brushless motor. The controller further includes a limit value arithmetic operation unit 606C (608C) that performs an arithmetic operation for d(q)-axis integration upper and lower limit values Idmax (Iqmax) and Idmin (Iqmin) on the basis of a power source voltage of the inverter and the like and an integration limiting unit 606D (608E) that limits Id** (Iq**) within a predetermined range defined by the d(q)-axis integration upper and lower limit values.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: February 13, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Hiroto Saotome, Masaki Hano
  • Patent number: 11898850
    Abstract: It is possible to reduce inadvertent vehicle behavior during autonomous driving.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: February 13, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Ryota Mita
  • Patent number: 11901836
    Abstract: A power control unit includes a plurality of power devices, a heat dissipation member disposed to face the power device with an insulating resin member interposed therebetween, and a plurality of plate-shaped bus bars each of which has one end connected to the power device, in which at least one of the plurality of bus bars is erected so that a direction along a plate width is aligned with a direction along a normal line of a surface of the heat dissipation member facing the power device, the power devices are arranged in a row along one direction in a straight line, an input bus bar is disposed on one side of the power device in a direction orthogonal to an arrangement direction of the power device, and an output bus bar is disposed on the other side of the power device in the orthogonal direction.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: February 13, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Daiki Kudo, Shogo Tokita, Kohei Nakano