公开(公告)号：US20220171855A1

公开(公告)日：2022-06-02

申请号：US17423271

申请日：2020-01-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Hiroki YAMAZAKI ,  Shuhei KANEKO ,  Nobuyoshi MORITA

IPC: G06F21/57 ,  B60R16/02 ,  G06F9/4401

Abstract: The present invention provides a technology to ensure security during fast boot-up. Provided according to the present invention is an electronic control device installed on a mobile body, the electronic control device including a controller which controls a microcomputer using code, a security verifier which makes security verification of the code, and boot-up code which is part of the code and is executed when the microcomputer is booted. The controller enables, when the code or the boot-up code has been verified by the security verifier at the time of a transition of the microcomputer to a shutdown state, the boot-up code to be executed during next boot-up.

公开(公告)号：US20220159838A1

公开(公告)日：2022-05-19

申请号：US17435961

申请日：2019-12-24

Applicant: Hitachi Astemo, Ltd.

Inventor： Tomohiro FUKUDA ,  Yoshiaki MIZUHASHI

IPC: H05K1/14 ,  H05K1/11 ,  H05K1/18 ,  H05K3/36 ,  H05K3/30

Abstract: An object of the present invention is to improve the component mounting efficiency. An electronic control unit of the present invention includes: a power board 23 that includes a first insertion hole portion R1A having a plurality of holes 23Aa-2U, 23Aa-2V, and 23Aa-2W through which a coil wire of a first system is inserted and a second insertion hole portion R2A having a plurality of holes 23Aa-2U, 23Aa-2V, and 23Aa-2W through which a coil wire of a second system is inserted; a control board 25 provided on an upper part of the power board 23; and a board-to-board connector 105 that electrically connects the power board 23 and the control board 25. The first insertion hole portion R1A and the second insertion hole portion R2A are collectively arranged on the same side of the power board 23.

公开(公告)号：US20220154797A1

公开(公告)日：2022-05-19

申请号：US17439486

申请日：2020-01-10

Applicant: Hitachi Astemo, Ltd.

Inventor： Yasuhiro AOKI

IPC: F16F9/36

Abstract: This shock absorber includes a friction generating member which is provided at a position on a side defined by a seal member of a cylinder and comes into sliding contact with a piston rod. The friction generating member has an annular elastic rubber portion which comes into sliding contact with the piston rod and a base portion to which the elastic rubber portion is fixedly attached. The elastic rubber portion is formed such that an upstream side and a downstream side are able to communicate with each other when a differential pressure between a one side chamber of the cylinder and a reservoir chamber reaches a predetermined pressure.

公开(公告)号：US20220153245A1

公开(公告)日：2022-05-19

申请号：US17439533

申请日：2020-03-18

Applicant: Hitachi Astemo, Ltd.

Inventor： Takahiro ITO ,  Kenichiro MATSUBARA ,  Wataru YOKOYAMA

IPC: B60T8/1761 ,  B60T7/04 ,  B60T7/22 ,  B60T8/92 ,  B60T13/14 ,  B60T17/18

Abstract: An object of the present invention is to provide a brake control apparatus including a backup brake, which brake control apparatus makes it possible both to ensure deceleration, and to attain vehicle running stability.
The present invention includes: a front-wheel-side braking mechanism 4 that includes a front-wheel-side electric hydraulic mechanism 6, and a hydraulic circuit system, and applies braking force to front wheels 2L, and 2R; a rear-wheel-side braking mechanism 5 that applies braking on a rear wheel side; a backup brake that is actuated in accordance with a switch to the hydraulic circuit system 15 when the front-wheel-side electric hydraulic mechanism 6 fails, and applies braking force to the front wheels 2R, and 2L; and a skid determination threshold setting section 43 that sets a skid determination threshold. When the backup brake is actuated, the skid determination threshold setting section 43 sets the skid determination threshold for the rear wheels 3L, and 3R on the basis of braking force information of the backup brake.

公开(公告)号：US20220144237A1

公开(公告)日：2022-05-12

申请号：US17435797

申请日：2020-03-09

Applicant: Hitachi Astemo, Ltd.

Inventor： Daisuke GOTO ,  Haruhiko FUJITA

IPC: B60T13/74 ,  B60T17/22 ,  B60T7/04

Abstract: A rear electric brake ECU includes a delay element. More specifically, the delay element is disposed between an arithmetic element of the rear electric brake ECU and a first switching element (an FET) for driving a solenoid of a parking mechanism. The delay element delays a signal for driving this first switching element. Further, the rear electric brake ECU includes a diagnosis device for diagnosing the actuation state of the arithmetic element. The diagnosis device is set so as to be able to shut off power supply to the solenoid regardless of the state of a signal (a driving signal) of the solenoid if diagnosing that the actuation state of the arithmetic element is abnormal.

公开(公告)号：US11324147B2

公开(公告)日：2022-05-03

申请号：US16681335

申请日：2019-11-12

Applicant: Hitachi Astemo, Ltd.

Inventor： Takeshi Kobayashi ,  Daiki Kudo ,  Masahiro Shimada ,  Kenichi Sasaki

IPC: H05K7/20 ,  H01L23/473

Abstract: A power conversion device includes a cooling structure capable of cooling down, by a coolant that flows through a first flow channel formed by a first wall portion and a second wall portion facing with each other, a first electronic component and a second electronic component mounted on an external surface of the first wall portion. The first wall portion is formed in a stepwise shape, and includes a first mount portion on which the first electronic component is mounted, a second mount portion which has a different height from the first mount portion, and on which the second electronic component is mounted, and a first connection portion that is extended between the first mount portion and the second mount portion.

公开(公告)号：US20220128389A1

公开(公告)日：2022-04-28

申请号：US17422795

申请日：2020-01-23

Applicant: Hitachi Astemo, Ltd.

Inventor： Akira UENODAN ,  Satoshi NODA ,  Naoki SAITO ,  Masamichi NAKAMURA ,  Takahiro MIKI ,  Nobuaki GORAI ,  Takayuki ISHIKAWA

IPC: G01F1/684

Abstract: Provided is a physical quantity detection device capable of improving noise performance of a flow rate detection unit as compared with the related art. The physical quantity detection device 20 includes a plate-like chip package 208 that is arranged to protrude from the flow path of the measurement target gas and has a width W along the flow direction of the measurement target gas. The chip package 208 includes a flow rate detection unit 205, an accelerating flow path 208c, a measurement surface 208a, a non-measurement surface 208b, and a separation flow portion 208d. The cross sectional area of the accelerating flow path 208c is reduced, and the flow rate detection unit 205 is arranged. The separation flow portion 208d partitions the second sub-passage 234b into a measurement flow path facing the measurement surface 208a and a non-measurement flow path facing the non-measurement surface 208b. In the width direction Dw of the chip package 208, the end portion 208ce of the accelerating flow path 208c and the end portion 208de of the separation flow portion 208d are separated from each other.

公开(公告)号：US20220126809A1

公开(公告)日：2022-04-28

申请号：US17438730

申请日：2020-05-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Tetsuro TAMURA

IPC: B60W10/02 ,  B60W40/10 ,  B60K17/348 ,  B60W40/12 ,  B60W30/188

Abstract: A transfer (13) that changes a distribution ratio of torque to be transmitted to a wheel using an electric motor (43), is controlled by a TF-ECU (18). The TF-ECU (18) includes a driver circuit (200) that drives the electric motor (43), a current sensor (53) that detects an actual current of the electric motor (43), and a microcomputer (100) that calculates a target current (I*) corresponding to a desired distribution ratio of torque and performs current feedback control for calculating an operation amount (D) of the electric motor (43) so as to adjust an actual current (Ia) to the target current (I*), and then outputs to the driver circuit (200) a drive signal corresponding to the operation amount (D).

公开(公告)号：US20220123684A1

公开(公告)日：2022-04-21

申请号：US17428117

申请日：2020-01-14

Applicant: Hitachi Astemo, Ltd.

Inventor： Hiroyoshi GOMI ,  Masaki ITABASHI ,  Yawara KATO ,  Kazutoshi TANABE

IPC: H02P27/08 ,  H02P23/14

Abstract: A motor actuator of the present invention includes, between a battery and an inverter, a first solid state relay and a second solid state relay in which directions of parasitic diodes are opposite to each other. When supply of power from the battery to the inverter is to be interrupted, the first solid state relay is brought into an OFF state or all of a plurality of field effect transistors are brought into the OFF state, and then the second solid state relay is brought into the OFF state.

公开(公告)号：US20220118995A1

公开(公告)日：2022-04-21

申请号：US17424393

申请日：2019-11-26

Applicant: Hitachi Astemo, Ltd.

Inventor： Kentaro UENO

IPC: B60W50/06 ,  B60W30/10

Abstract: In a vehicle control device, a vehicle control method, and a vehicle control system according to the present invention, in control of a motion of a vehicle which is based on a signal relating to a target trajectory and a signal relating to a traveling state, a target traveling state of the vehicle after a predetermined time period corresponding to a delay element in the control of the motion of the vehicle is predicted, and a command for achieving the predicted target traveling state is output to an actuator configured to control the motion of the vehicle, thereby suppressing occurrence of a deviation of a traveling trajectory from the target trajectory and occurrence of an unstable behavior, for example, meandering, due to the delay element in a vehicle motion control system which is based on the target trajectory.