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公开(公告)号：US20230093616A1
公开(公告)日：2023-03-23
申请号：US17799814
申请日：2021-02-10
Applicant: HITACHI ASTEMO, LTD.
Inventor： Makoto KIMURA
Abstract: The present invention provides a rotation angle detection device that detects a steering state quantity of steer-by-wire. The rotation angle detection device includes a drive gear that rotates along with the rotation of a rotating shaft part, first through third driven gears that rotate in conjunction with the drive gear and have different numbers of teeth that are indivisible by each other, sensors that detect the amounts of rotation and are provided for the respective first through third driving gears, a rotation amount generating unit that generates the amount of rotation of the drive gear by combining the amounts of rotation of different driven gears, and power supply circuits each of which is provided for a combination of sensors that detect the amounts of rotation of different driven gears. This configuration makes it possible to improve robustness against failure of sensor elements and power supply circuits.
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公开(公告)号：US20230090474A1
公开(公告)日：2023-03-23
申请号：US17795111
申请日：2020-12-18
Applicant: Hitachi Astemo, Ltd.
Inventor： Mamoru OHBA , Toshiyuki INNAMI , Koichi YOKOURA
IPC: B60W30/09 , B60W30/095 , B60W10/18
Abstract: A vehicle control device causes an automatic brake to function even for an obstacle suddenly appearing from outside a sensor detection range in a place estimated to be dangerous such as an intersection. A vehicle control device calculates time-to-collision TTC based on a detection result of an obstacle sensor, and controls a brake, which is an actuator of a vehicle, based on the calculated time-to-collision TTC. The vehicle control device includes a determination unit that determines right turn or left turn of the vehicle, and a command unit that sends a command according to a determination result of the determination unit to the brake. When determining that the vehicle is turning right or left, the determination unit changes the time-to-collision TTC to a longer value by extending more than that at the time of traveling straight.
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公开(公告)号：US20230081701A1
公开(公告)日：2023-03-16
申请号：US17794566
申请日：2021-01-22
Applicant: HITACHI ASTEMO, LTD.
Inventor： Hiroshi SATO , Kohtaro SHIINO
IPC: H02P29/028 , H02K11/25 , H02K11/33 , H02P25/22 , H02P27/08
Abstract: A heater-integrated fuse is provided at a neutral point of a stator coil, and when a short-circuit failure of an inverter is detected, a fuse part of the heater-integrated fuse is cut by heating.
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公开(公告)号：US20230073165A1
公开(公告)日：2023-03-09
申请号：US17799229
申请日：2021-02-05
Applicant: HITACHI ASTEMO, LTD.
Inventor： Masatoshi ENOMOTO
Abstract: A housing for an electric power steering device that has an electric motor, a speed reduction mechanism, a ball screw mechanism, and a rack bar. The housing has a first housing having a first end portion covering a part of the rack bar and a second end portion with a portion accommodating at least a part of the speed reduction mechanism. The first housing includes a rack bar insertion hole portion; an electric motor shaft insertion hole portion having a cylindrical shape on a radially outer side of the rack bar insertion hole portion, through which an electric motor shaft is inserted; and a fastening portion having an annular shape overlapping with an inner peripheral surface of the electric motor shaft insertion hole portion along the longitudinal direction of the rack bar when an axis extending in the rack bar longitudinal direction is viewed from a radially outer side.
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公开(公告)号：US20230070735A1
公开(公告)日：2023-03-09
申请号：US17798419
申请日：2021-02-09
Applicant: Hitachi Astemo, Ltd.
Inventor： Kosuke KADOKURA
Abstract: A pin portion in which an introduction orifice leading to a back-pressure chamber is formed is disposed along inner peripheries of a main body, a main valve, and a pilot casing. A nut disposed on the pin portion is rotated relative to the pin portion to fasten the main body, the main valve, and the pilot casing together. This eliminates the necessity of machining a tool engagement portion in the pin portion and represses an increase in man-hours.
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Patent Agency Ranking
公开(公告)号：US20230067661A1
公开(公告)日：2023-03-02
申请号：US17792534
申请日：2021-01-28
Applicant: Hitachi Astemo, Ltd.
Inventor： Naoki YONEYA , Masayuki SARUWATARI , Yoshihito YASUKAWA , Maung Maung AYE
Abstract: The present subject matter relates to a control unit for controlling an internal combustion engine, wherein the internal combustion engine includes at least one cylinder 100, at least one combustion chamber 90 within which a fuel is burned, at least one fuel injector 40, 50, at least one ignition device 60, and an oxygen determination unit 20 configured to determine the content of oxygen in the fuel, wherein the control unit 10 is configured to control the internal combustion engine based on the content of oxygen in the fuel detected by the oxygen determination unit 20.
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公开(公告)号：US20230064063A1
公开(公告)日：2023-03-02
申请号：US17785795
申请日：2020-11-27
Applicant: HITACHI ASTEMO, LTD.
Inventor： Kei SUZUKI , Shun KAWANO
IPC: B23K1/00 , B23K1/20 , H01L23/051 , H01L23/495 , H01L23/00
Abstract: Since the solder 106 temporarily remaining in the first region 301 is in a state of being high in curvature, it is in point contact with the semiconductor element 105 at the vertex of the solder 106. Thereafter, the solder 106 is gradually wetted and spread from the center part to the peripheral part and from the first region 301 to the second region 302 while the semiconductor element 105 is pressed against the solder 106. At this time, since the solder 106 wets and spreads while discharging air, generation of voids can be suppressed.
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公开(公告)号：US20230061807A1
公开(公告)日：2023-03-02
申请号：US17797250
申请日：2021-02-04
Applicant: HITACHI ASTEMO, LTD.
Inventor： Yuki YOSHIDA , Ryusuke HIRAO , Nobuyuki ICHIMARU
IPC: B60G17/0195 , B60G17/016
Abstract: A vehicle control device includes a vertical VSE, a riding comfort control logic, a planar VSE, a steering stability control logic, a command limiting unit, a control command selection unit. The command limiting unit acquires specifications related to a traveling of a vehicle such as, for example, a slip rate and a four-wheel independent braking/driving force control flag through a CAN. The command limiting unit limits a variable range of a damping force generated by a suspension device provided between a vehicle body and wheels of the vehicle based on the specifications related to the traveling of the vehicle to obtain a first command value. The command limiting unit outputs the obtained first command value to the control command selection unit.
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公开(公告)号：US20230061556A1
公开(公告)日：2023-03-02
申请号：US17785794
申请日：2020-11-27
Applicant: HITACHI ASTEMO, LTD.
Inventor： Shoho ISHIKAWA
Abstract: Provided is a power conversion device capable of reducing an influence of an electromagnetic wave on a circuit board. A power conversion device 1 includes a circuit board 2, a power conversion module 3 disposed to face the circuit board 2, a bus bar 4 connected to the power conversion module 3, and a shielding portion 5 that shields an electromagnetic wave. The bus bar 4 extends from one side S1 to an opposite side S2 of the circuit board 2 along a thickness direction Dt of the circuit board 2 through a side edge 21 of the circuit board 2. The shielding portion 5 is disposed between the bus bar 4 and the side edge 21 of the circuit board 2, extends from the one side S1 to the opposite side S2 of the circuit board 2 along the thickness direction Dt of the circuit board 2, and extends to both sides of the bus bar 4 along the side edge 21 of the circuit board 2.
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公开(公告)号：US20230054252A1
公开(公告)日：2023-02-23
申请号：US17797000
申请日：2020-12-25
Applicant: Hitachi Astemo, Ltd.
Inventor： Miki HIRAOKA , Yoshio KAWAI
Abstract: An electronic control device includes a board including a heat sink on which a heat generation element is mounted, and a housing that is in contact with the board and dissipates heat of the heat generation element to the outside. A potential of the housing is a ground, and a potential of the heat sink is a non-ground. The board includes a first layer including a first non-ground wiring that is in direct contact with the heat sink, and a second layer including a second ground wiring that is in electrical and thermal contact with the housing. The first non-ground wiring and the second ground wiring overlap each other in plan view from a thickness direction of the board.
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