公开(公告)号：US20230119362A1

公开(公告)日：2023-04-20

申请号：US17911800

申请日：2020-10-09

Applicant: Hitachi Astemo, Ltd.

Inventor： Satoshi Enomoto ,  Hiroaki Mori ,  Hiroshi Fujita

IPC: B62D5/04 ,  B62D3/12 ,  F16H25/22

Abstract: A steering apparatus includes a turning shaft movable in a vehicle widthwise direction, a pinion shaft meshed with the turning shaft and a first housing that retains therein the turning shaft and the pinion shaft. An inner circumferential surface of the first housing facing with the turning shaft is provided with an inclined portion that continuously changes an internal diameter. When a portion where a tooth of the turning shaft and a tooth of the pinion shaft are meshed with each other is defined as a meshed portion, the inclined portion is formed below at least the meshed portion.

公开(公告)号：US11629683B2

公开(公告)日：2023-04-18

申请号：US17595630

申请日：2020-06-09

Applicant: Hitachi Astemo, Ltd.

Inventor： Kazuhiro Oryoji ,  Yoshihiko Akagi ,  Takayasu Matsushita

IPC: F02P3/045 ,  F02P5/15 ,  F02B23/08

Abstract: Provided is an internal combustion engine control device capable of reducing a measurement load and calculating a flow velocity around an ignition plug. The internal combustion engine control device includes an inter-gap voltage calculation unit 31 and a flow velocity calculation unit 32. The inter-gap voltage calculation unit 31 calculates a reference inter-gap voltage under a reference condition, based on a secondary current and in-cylinder pressure. The flow velocity calculation unit calculates the flow velocity of a gas around the ignition plug based on the reference inter-gap voltage.

公开(公告)号：US20230114063A1

公开(公告)日：2023-04-13

申请号：US17911023

申请日：2020-12-28

Applicant: Hitachi Astemo, Ltd.

Inventor： Mitsuhiro IWASAKI ,  Masahiro DOI ,  Takeo YAMASHITA ,  Hitomi AOYAMA ,  Shinichirou HIDA

IPC: H02M1/32 ,  H02M7/48 ,  H02M1/08 ,  H03K19/173 ,  H02P27/06 ,  H02P29/024

Abstract: An electronic control device for power conversion having an integrated safety function and improved reliability includes: a power module for converting DC power into AC power and supply the AC power to a motor; a gate driver for controlling the power module; a microcontroller for controlling the gate driver: a power supply IC for supplying power to at least one of the gate driver and the microcontroller: a discharge circuit for discharging a high voltage supplied to the power module; and a sensor. The power supply IC includes a microcomputer abnormality detection circuit for detecting an abnormality of the microcontroller and a safety processing circuit for determining necessity of safety processing based on an output of at least one of the microcomputer abnormality detection circuit and the sensor and performs the safety processing. The safety processing circuit stops the motor or discharges a high voltage using the discharge circuit.

公开(公告)号：US20230100858A1

公开(公告)日：2023-03-30

申请号：US17911244

申请日：2021-03-05

Applicant: Hitachi Astemo, Ltd.

Inventor： Ryusuke HIRAO ,  Nobuyuki ICHIMARU

IPC: B60G17/018 ,  G06N3/08

Abstract: A controller includes a calculation processing portion configured to make a predetermined calculation based on an input vehicle state amount and output a target damping force, and a damping force map configured to acquire a control instruction value for controlling a variable damper based on the target damping force. The calculation processing portion makes the calculation using a learning result that is acquired by causing the calculation processing portion to learn pairs of a plurality of target amounts acquired using a predetermined evaluation method prepared in advance with respect to a plurality of different vehicle state amounts as pairs of pieces of input and output data.

公开(公告)号：US20230097594A1

公开(公告)日：2023-03-30

申请号：US17910853

申请日：2021-03-12

Applicant: Hitachi Astemo, Ltd.

Inventor： Riu HIRAI ,  Hiroaki ITO ,  Hiroo UCHIDA ,  Goichi ONO ,  Tadashi KISHIMOTO

IPC: G06N3/04

Abstract: An information processing device executes a DNN computation by a neural network including a plurality of layers. The information processing device executes a computation process corresponding to a given layer in the neural network, on a first area and on a second area different from the first area, the first and second areas being included in a feature map inputted to the neural network. The information processing device synthesizes a result of the computation process on the first area and a result of the computation process on the second area, and outputs the synthesized computation process results, as a result of the computation process on the feature map.

公开(公告)号：US11614023B2

公开(公告)日：2023-03-28

申请号：US17437792

申请日：2020-01-17

Applicant: HITACHI ASTEMO, LTD.

Inventor： Hari Lakshman Kumar ,  Zhenyu Shen ,  Shingo Murakami

IPC: F01P7/14 ,  F01P7/16 ,  F16K11/076 ,  F16K11/087

Abstract: A control valve according to the present invention is configured such that when a third opening part, which is an auxiliary opening part, and a third discharge opening, which is an auxiliary connection opening, do not overlap, the third opening part and a continuous discharge opening overlap. Thus, for example, when a flow rate of cooling water for continuous circulation is required, such as during a cold start, cooling water guided through an internal passage is discharged via the continuous discharge opening in addition to cooling water guided from a bypass passage, thereby ensuring a sufficient flow rate of cooling water for continuous circulation.

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

IPC: G01B7/30 ,  B62D5/04

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.

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.

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.

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

IPC: B62D5/04 ,  F16H19/04 ,  F16H25/22

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.