公开(公告)号：US12095339B2

公开(公告)日：2024-09-17

申请号：US17430555

申请日：2020-02-05

Applicant: Hitachi Astemo, Ltd.

Inventor： Atsuji Saito ,  Satoshi Usui

IPC: H02K5/24 ,  F02M51/04

CPC classification number: H02K5/24 ,  F02M51/04

Abstract: A coil component of an electromagnetic valve is made compact to achieve both low cost and improvement in sound vibration performance. Therefore, a high-pressure fuel pump of the present invention includes: a coil 3g; a magnetic core 3e that is arranged on a side opposite to a pressurizing chamber 11 with respect to a movable core 3h and attracts the movable core 3h when the coil 3g is energized; a yoke 3q arranged on a radially outer side of the coil 3g; a cover portion 3r that covers the coil 3g from an axially outer side; and a molded portion 17 that covers a radially outer side of the yoke 3q and an axially outer side of the cover portion 3r.

公开(公告)号：US12092002B2

公开(公告)日：2024-09-17

申请号：US18023779

申请日：2021-08-06

Applicant: Hitachi Astemo, Ltd.

Inventor： Shinichi Matsushita ,  Masaki Kobayashi

IPC: F01N11/00 ,  F02D41/02 ,  F02D41/14 ,  F02D41/38

CPC classification number: F01N11/007 ,  F02D41/0235 ,  F02D41/1454 ,  F02D41/38 ,  F01N2550/02 ,  F02D2200/0816

Abstract: An internal combustion engine control device and a catalyst deterioration diagnostic method according to the present invention control the amount of fuel to be supplied to an internal combustion engine such that the air-fuel ratio of the exhaust on the downstream side of the exhaust purification catalyst is alternately switched between rich and lean, measure the oxygen storage capability of the exhaust purification catalyst during a measurement period within a reversal period of the air-fuel ratio, and diagnose deterioration of the exhaust purification catalyst based on a measurement value of the oxygen storage capability. A time point at which the output of an exhaust sensor indicates that the air-fuel ratio of the exhaust on the downstream side of the exhaust purification catalyst begins to change from a vicinity of a stoichiometric air-fuel ratio to rich or lean is set as the time of end of the measurement period.

公开(公告)号：US20240300523A1

公开(公告)日：2024-09-12

申请号：US18258358

申请日：2021-09-22

Applicant: HITACHI ASTEMO, LTD.

Inventor： Daniel GABRIEL ,  Yuki HORITA ,  Hidehiro TOYODA

IPC: B60W60/00 ,  B60W30/09 ,  B60W30/095 ,  B60W50/14

CPC classification number: B60W60/001 ,  B60W30/09 ,  B60W30/0953 ,  B60W30/0956 ,  B60W50/14 ,  B60W2554/4041

Abstract: A driving support system includes a storage unit that stores a plurality of pieces of invasion event information including information on an invasion position where a moving object invades a traveling region, the invasion event information being information on an invasion event in which the moving object invades the traveling region, an invasion frequent occurrence region calculation unit that specifies an invasion frequent occurrence region which is a region where the invasion event easily occurs based on the plurality of pieces of invasion event information, a position specification unit that specifies a position of the vehicle, and a driving support unit that supports driving of the vehicle by notifying an occupant of the vehicle and controlling traveling of the vehicle based on a relationship between the invasion frequent occurrence region and the position of the vehicle.

公开(公告)号：US12084123B2

公开(公告)日：2024-09-10

申请号：US17910135

申请日：2021-02-03

Applicant: HITACHI ASTEMO, LTD.

Inventor： Qixiang Wang ,  Susumu Kimoto ,  Osamu Yoshida

IPC: B62D5/04 ,  F16H55/24

CPC classification number: B62D5/0454 ,  B62D5/0406 ,  B62D5/0412 ,  F16H55/24

Abstract: A steering device includes: a worm wheel linked to a steering shaft; a worm shaft engaging with the worm wheel; an electric motor supplying rotational force to the worm shaft and including a motor shaft connected to a first end of the worm shaft; a gear housing containing the worm wheel and the worm shaft; a bearing supporting a second end of the worm shaft; a center adjuster that is contained in the gear housing and includes a holder and a collar, wherein the collar is disposed in the holder and retains the bearing so as to allow the bearing to move with respect to the holder in a gear engagement direction; and a biasing member disposed in the center adjuster and structured to bias the bearing in a direction inclined with respect to the gear engagement direction.

公开(公告)号：US12084044B2

公开(公告)日：2024-09-10

申请号：US17778605

申请日：2020-11-06

Applicant: Hitachi Astemo, Ltd.

Inventor： Hiroshi Nakano ,  Nobuyasu Kanekawa ,  Atsushi Arata

IPC: B60W20/50 ,  B60L3/00 ,  B60W10/02 ,  B60W10/08

CPC classification number: B60W20/50 ,  B60L3/0061 ,  B60W10/02 ,  B60W10/08 ,  B60W2510/081 ,  B60W2520/28

Abstract: A vehicle control system includes a first electric motor that causes a vehicle to travel, a second electric motor that generates power by using an output of a power source and starts the power source, a power storage device that stores the power generated by the second electric motor and supplies the power to the first electric motor, a monitoring device that monitors a failure state of the vehicle, and a switch that switches the vehicle to travel from the first electric motor to the second electric motor. In a case of a predetermined driving state in which the monitoring device detects a failure of the first electric motor and a driving force is obtained from the second electric motor, the monitoring device controls the switch to switch the driving force for causing the vehicle to travel from the first electric motor to the second electric motor.

公开(公告)号：US20240295247A1

公开(公告)日：2024-09-05

申请号：US18573037

申请日：2022-06-30

Applicant: Hitachi Astemo, Ltd.

Inventor： Hideaki ISHII

IPC: F16D65/22 ,  F16D51/24 ,  F16D51/50 ,  F16D65/09 ,  F16D121/04 ,  F16D121/24

CPC classification number: F16D65/22 ,  F16D51/24 ,  F16D51/50 ,  F16D65/09 ,  F16D2121/04 ,  F16D2121/24

Abstract: A brake shoe brakes a drum rotor by being pressed against an inner peripheral surface of the drum rotor. A friction material of the brake shoe includes a first lining material, a second lining material, and a third lining material. The first lining material is one end portion of the friction material in an arc shape opposing the inner peripheral surface of the drum rotor in a rotation direction of the drum rotor. The second lining material is another end portion of the friction material in the rotation direction of the drum rotor. The third lining material is positioned between the one end portion and the another end portion in the rotation direction of the drum rotor, and is produced such that the third lining material wears earlier than the first lining material and the second lining material.

公开(公告)号：US12077230B2

公开(公告)日：2024-09-03

申请号：US17596440

申请日：2020-05-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Hiroki Sonoda ,  Tomoaki Fujibayashi ,  Yoshiji Hasegawa ,  Kazuya Takahashi ,  Toshihiko Kaneda

IPC: B62D6/00 ,  B62D7/15

CPC classification number: B62D6/002 ,  B62D7/159

Abstract: A steering control device, a steering control method, and a steering control system according to the present invention determines a rear wheel steering angle control command for returning a rear wheel steering angle to a predetermined steering angle earlier than a front wheel steering angle when steering wheel operation (that is, operation of a steering wheel) shifts from a state of additional turning to a state of cutback turning, in steering control that steers a rear wheel steering angle of a vehicle in opposite-phase with respect to a front wheel steering angle, and outputs the determined rear wheel steering angle control command to a rear wheel steering device, so that hysteresis of a yaw rate is reduced or eliminated, reducing or eliminating a sense of discomfort given to a driver.

公开(公告)号：US20240291417A1

公开(公告)日：2024-08-29

申请号：US18565657

申请日：2022-02-15

Applicant: HITACHI ASTEMO, LTD.

Inventor： Shigehisa AOYAGI ,  Takafumi HARA ,  Takaya TSUKAGOSHI

IPC: H02P27/08 ,  H02P23/14 ,  H02P25/026

CPC classification number: H02P27/085 ,  H02P23/14 ,  H02P25/026

Abstract: An inverter control device performs pulse width modulation by selecting one of a synchronous pulse control mode in which a frequency of a carrier wave used in the pulse width modulation is changed in accordance with a rotation speed of the motor and an asynchronous pulse control mode in which the frequency of the carrier wave is constant regardless of the rotation speed of the motor. At the time of switching from the asynchronous pulse control mode to the synchronous pulse control mode, the inverter control device changes a carrier reference phase that is a reference value of a phase of the carrier wave to a different value before and after the switching.

公开(公告)号：US12071195B2

公开(公告)日：2024-08-27

申请号：US17470082

申请日：2021-09-09

Applicant: Hitachi Astemo, Ltd.

Inventor： Kojiro Yoshida

IPC: B62K25/28 ,  F16F9/44 ,  F16F13/00

CPC classification number: B62K25/283 ,  F16F9/44 ,  F16F13/007 ,  F16F2222/12 ,  F16F2228/066 ,  F16F2230/186 ,  F16F2232/08 ,  F16F2234/02

Abstract: A damper apparatus includes an adjusting bolt including a head part rotatably stored in an adjusting bolt storage part formed in a base part, and a male thread part including a tip end formed in a male thread shape. An adjusting member includes: a female thread part, which is a part in a female thread shape fastened to the male thread part of the adjusting bolt and movably provided along an axis line of the adjusting bolt; a tapered surface part with which the tip end of a push rod comes into contact and formed in a tapered shape with respect to the axis line of the adjusting bolt; and wall parts rising from both ends of the tapered surface part with reference to the circumferential direction of the adjusting bolt, and interposing the push rod therebetween.

公开(公告)号：US12068552B2

公开(公告)日：2024-08-20

申请号：US17632918

申请日：2020-06-05

Applicant: Hitachi Astemo, Ltd.

Inventor： Shinya Kawakita ,  Shiro Yamashita ,  Toshikazu Shigyo

IPC: H01R12/58 ,  H05K1/02 ,  H05K1/11

CPC classification number: H01R12/585 ,  H05K1/0271 ,  H05K1/116 ,  H05K2201/10189 ,  H05K2201/10303 ,  H05K2201/1059

Abstract: A circuit board including a through-hole into which a press-fit terminal portion is inserted in a depth direction; an inner wall land provided on an inner wall of the through-hole; and a plurality of inner layer lands which are provided in an inner layer of the circuit board, are planes substantially parallel to a mounting surface of the circuit board, and are in contact with the inner wall land. The inner wall land has a first region that is in contact with the press-fit terminal portion and a second region that is not in contact with the press-fit terminal portion. Among the plurality of inner layer lands, a first inner layer land, which is an inner layer land disposed on an identical surface with the first region of the inner wall land, is wider than a second inner layer land which is an inner layer land disposed on an identical surface with the second region of the inner wall land.