公开(公告)号：US20220359694A1

公开(公告)日：2022-11-10

申请号：US17618763

申请日：2020-06-09

Applicant: HITACHI ASTEMO, LTD.

Inventor： Shinichirou WADA ,  Tomohiko YANO ,  Yoichiro KOBAYASHI

IPC: H01L29/423 ,  H01L23/00

Abstract: There is a problem that an area of a principal current cell is reduced by an area of a bonding pad wiring layer for a sub-cell. A source electrode 9b of a current detection cell 22 is electrically connected to a bonding pad wiring layer 12 formed on an interlayer insulating film 10 via a wiring layer contact 11. The bonding pad wiring layer 12 is formed with respect to a source electrode 9a of a principal current cell 21 so as to cover a part of the source electrode 9a via the interlayer insulating film 10. As a result, the source electrode 9b is miniaturized, and a size of the source electrode 9b is made substantially equal to a size of the current detection cell 22. Therefore, the current detection cell 22 and the principal current cell 21 are disposed close to each other.

公开(公告)号：US20220356590A1

公开(公告)日：2022-11-10

申请号：US17621416

申请日：2020-06-05

Applicant: Hitachi Astemo, Ltd.

Inventor： Takuma OHNUKI ,  Hiroshi NAKANO

IPC: C25D3/10 ,  C25D7/04 ,  C25D5/00

Abstract: This cylinder device includes a tubular cylinder that has an opening portion on at least one end side, a metal rod that protrudes through the opening portion of the cylinder, and a sliding contact member that is provided at the opening portion of the cylinder and comes into sliding contact with the rod. A chromium plating film is provided on a surface of the rod. An aspect ratio of an average crystallite diameter in a film thickness direction to an average crystallite diameter in an in-plane direction in the chromium plating film is 0.2 or smaller.

公开(公告)号：US20220355771A1

公开(公告)日：2022-11-10

申请号：US17619763

申请日：2020-06-22

Applicant: Hitachi Astemo, Ltd.

Inventor： Haruhiko FUJITA

IPC: B60T8/17 ,  B60T13/74

Abstract: A main ECU controls a braking force by driving an electric motor of a brake mechanism based on a value detected by a thrust force sensor provided to the brake mechanism. The main ECU calibrates (corrects) the value detected by the thrust force sensor based on a driving force acquired when, while a driving force is applied to left and right front wheels serving as driving wheels with the braking force applied to a rear right wheel or a rear left wheel by the brake mechanism, this driving force exceeds the braking force.

公开(公告)号：US20220355668A1

公开(公告)日：2022-11-10

申请号：US17619736

申请日：2020-06-12

Applicant: Hitachi Astemo, Ltd.

Inventor： Kentarou JYUMONJI

IPC: B60L1/00 ,  G07C5/00

Abstract: A failure detection frequency of failure diagnosis for a cut-off function can be improved. An on-vehicle control device includes a microcomputer that performs a control operation of an external device, a monitoring element that monitors the microcomputer, an output drive circuit that sends a control signal to the external device based on an instruction from the microcomputer, a communication circuit that switches a communication state with another on-vehicle control device based on an instruction from the monitoring element, and an energization cut-off element that energizes and cuts off a power supply voltage to be supplied to the output drive circuit based on an instruction from the monitoring element. The monitoring element independently instructs the switching of the communication state by the communication circuit and the energization and cut-off of the power supply voltage by the energization cut-off element.

公开(公告)号：US20220349464A1

公开(公告)日：2022-11-03

申请号：US17200121

申请日：2019-07-05

Applicant: HITACHI ASTEMO, LTD.

Inventor： Kenji FUKASAWA ,  Fumio OHSHIMA

IPC: F16H57/037 ,  F16H57/04

Abstract: A differential case includes an outer shell wall portion configured to accommodate a pinion gear therein, and a first groove is formed in an inner surface of the outer shell wall portion on a back surface side of the pinion gear. In addition, a convex portion is formed on the inner surface of the outer shell wall portion on the back surface side of the pinion gear, and the first groove is formed in the convex portion. Further, a diameter of the convex portion is equal to or larger than a diameter of a back surface of the pinion gear.

公开(公告)号：US11486343B2

公开(公告)日：2022-11-01

申请号：US17545328

申请日：2021-12-08

Applicant: HITACHI ASTEMO, LTD.

Inventor： Yuya Suzuki ,  Norihide Ouchi ,  Nozomu Sasaki ,  Junpei Kogawa ,  Sho Kanda

IPC: F02M51/06

Abstract: In an electromagnetic fuel injection valve, a plurality of recess parts are provided in an attracted face of a movable core, the recess parts dividing a taper face of the movable core into a plurality of sections along a peripheral direction of the movable core. Accordingly, a fuel oil film present in an engaged part between an annular projection of a fixed core and the taper face is sectioned at a plurality of locations, thereby suppressing a sticking phenomenon of the engaged part caused by the fuel oil film. Therefore, when energization of a coil is cut off, a delay in detachment of the movable core from the fixed core is eliminated, thus contributing to improvement of valve-closing responsiveness.

公开(公告)号：US20220340018A1

公开(公告)日：2022-10-27

申请号：US17859289

申请日：2022-07-07

Applicant: Hitachi Astemo, Ltd.

Inventor： Satoshi KANEKO ,  Keisuke SUZUKI ,  Kazuya TAKAHASHI

IPC: B60L15/20 ,  B60T8/175 ,  B60W10/08 ,  B60W10/184

Abstract: A control apparatus for a vehicle includes an addition portion that outputs a post-compensation driver request torque, which is acquired by adding a driving torque (a loss compensation driving torque) lost due to a braking torque provided to a wheel on a low-μ road surface side according to a BLSD request hydraulic pressure calculated by a BLSD request hydraulic pressure calculation processing portion to a driver request torque calculated by a driver request torque calculation processing portion, to a motor.

公开(公告)号：US20220334846A1

公开(公告)日：2022-10-20

申请号：US17641252

申请日：2020-08-14

Applicant: Hitachi Astemo, Ltd.

Inventor： Masahiro DOI ,  Yuri MOIZUMI ,  Takeo YAMASHITA

IPC: G06F9/4401 ,  G06F1/26

Abstract: To obtain a highly reliable electronic control device capable of reliably causing a microcomputer to perform normal termination and normal re-activation by controlling a power supply voltage. According to the present invention, an electronic control device 25 includes a microcomputer 18, a power supply control unit 20 that controls a power supply voltage of the microcomputer, and a capacitor 19 provided between the power supply control unit and the microcomputer. The power supply control unit 20 includes a power supply unit 24 that supplies a first power supply voltage V1 to the microcomputer by turning ON an activation signal for activating the microcomputer, and stops the supply of the power supply voltage by turning the activation signal OFF, a reset control unit 14 that generates a Low reset signal by turning the activation signal OFF, and a discharge control unit 12 that discharges electric charges of the capacitor when acquiring the Low reset signal.

公开(公告)号：US11465460B2

公开(公告)日：2022-10-11

申请号：US16745058

申请日：2020-01-16

Applicant: HITACHI ASTEMO, LTD.

Inventor： Ken Isshiki ,  Eishi Ishimaru ,  Kyouichi Tagami ,  Katsutoshi Yokoi

IPC: B60G17/0165 ,  B60G17/016 ,  B60G17/018 ,  B60G17/08

Abstract: A road surface condition is determined appropriately. A road surface determining section (84) configured to determine a road surface state includes a threshold setting section (845) configured to set a threshold for determining the road surface state, so that a value of a desired control variable is multiplied by a coefficient determined in accordance with a result of the determination by the road surface determining section (84).

公开(公告)号：US20220321029A1

公开(公告)日：2022-10-06

申请号：US17629852

申请日：2020-07-13

Applicant: Hitachi Astemo, Ltd.

Inventor： Tomohiko YANO ,  Shinichirou WADA ,  Yoichiro KOBAYASHI

IPC: H02M7/5387 ,  H02M1/096 ,  H02M1/32 ,  H03F3/45

Abstract: Provided is a novel power conversion device that enables estimation of a temperature of a power device without using a temperature sensing diode and can accurately estimate a temperature and a current of a current sensing element that observes a main current. A measurement voltage (Vref) is applied between source terminals (31s and 49s) of a main control element 31 and a current sensing element 49 in a state in which the main control element 31 and the current sensing element 49 are turned off, and a temperature of a power device 30 is estimated from a current (Ib) flowing between the source terminals (31s and 49s) of the main control element 31 and the current sensing element 49 at the time of the application by using the fact that a resistance value of a semiconductor substrate between the source terminals of the main control element 31 and the current sensing element 49 has temperature dependency.