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公开(公告)号：US20220341503A1
公开(公告)日：2022-10-27
申请号：US17641070
申请日：2020-09-03
Applicant: HITACHI ASTEMO, LTD.
Inventor： Shingo MURAKAMI
IPC: F16K27/06 , F16K11/085
Abstract: A control valve includes: a second inner circumferential portion capable of holding a first spring, in a first communication passage provided at a first discharge opening of a housing; and a recessed portion recessed in a radial direction, at a position that is a part of a region in a circumferential direction of the second circumferential portion and overlaps a second communication passage opening in a biasing direction of the first spring. Therefore, when inserting the first spring into the first communication passage, it is possible to hold the first spring with the inner circumferential surface of the second inner circumferential portion. Consequently, the first spring is appropriately mounted in the second circumferential portion, thereby preventing a mounting defect of the first spring.
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公开(公告)号：US20220341482A1
公开(公告)日：2022-10-27
申请号：US17858429
申请日：2022-07-06
Applicant: Hitachi Astemo, Ltd.
Inventor： Takashi TSUKAHARA
Abstract: A hydraulic damper includes: a cylinder extending from one side to the other side and containing liquid; a rod configured to move relative to the cylinder; a first piston configured to move relative to the cylinder inside the cylinder along with relative movement of the rod and generate damping force; a first elastic member inside the cylinder and configured to be displaced along with relative movement of the rod; a second elastic member separate from the first elastic member inside the cylinder and configured to be displaced along with relative movement of the rod; and a second piston separate from the first piston and configured to move relative to the cylinder inside the cylinder, to be always supported by the first and second elastic members so as to be movable inside the cylinder, and to generate damping force that varies according to displacement of the first and second elastic members.
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公开(公告)号：US20220340003A1
公开(公告)日：2022-10-27
申请号：US17641353
申请日：2020-09-03
Applicant: HITACHI ASTEMO, LTD.
Inventor： Hidekazu AOKI , Kenichiro ISHIKURA
Abstract: A propeller shaft includes an outer ring member having a bottom section through which a vent hole is formed, on a first end part connected to a shaft member. The propeller shaft further includes an inner ring member provided to the inner peripheral side of a second end part of the outer ring member on the side axially opposite to the first end part and connected to a rod member; a ball member between the inner and outer ring members, which is lubricated by grease; a plate member attached to the inner peripheral part of the outer ring member and forming an auxiliary chamber with the bottom section; and a communication path. The communication path allows communication between the first end part side and the second end part side of the outer ring member with the plate member interposed therebetween.
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公开(公告)号：US20220332306A1
公开(公告)日：2022-10-20
申请号：US17641562
申请日：2020-11-24
Applicant: Hitachi Astemo, Ltd.
Inventor： Daisuke NOMA , Kentaro UENO
Abstract: The vehicle control device of the present invention acquires characteristics of a road condition in front of a traveling vehicle based on external information; acquires vehicle behavior control variables for controlling the behavior of the vehicle based on estimated state variables of the vehicle that are obtained based on the characteristics, and control variables concerning speed of the vehicle based on the external information; acquires trajectory tracking control variables for causing the vehicle to track the target trajectory based on the target trajectory on which the vehicle travels that are obtained based on the characteristics and the estimated state variables; and outputs the control commands for controlling the suspension device, steering device, and braking and driving device based on the vehicle behavior control variables and the trajectory tracking control variables. This improves travel stability of the vehicle on a road surface on which an irregularity such as ruts exists.
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公开(公告)号：US20220332302A1
公开(公告)日：2022-10-20
申请号：US17641227
申请日：2020-11-25
Applicant: Hitachi Astemo, Ltd.
Inventor： Asahi WATANABE , Toshiya OOSAWA , Daisuke NEZU
IPC: B60T13/68 , B60T8/1755 , B60T8/40 , B60T13/14
Abstract: When another pump is actuated while a pump is de-actuated, a pressure adjustment valve is brought into a valve-opened state after a shut-off valve is actuated in a valve-opening direction and the another pump is actuated.
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Patent Agency Ranking
公开(公告)号：US20220332056A1
公开(公告)日：2022-10-20
申请号：US17640799
申请日：2020-11-18
Applicant: HITACHI ASTEMO, LTD.
Inventor： Kumiko YOSHINAGA , Satoshi UCHIDA
Abstract: A caulking pin (15) is inserted into a mounting hole (21) provided in a metal case body (3), and the end portion of the caulking pin (15) is thermally caulked with a welding tip (24) to form a mold forming portion (17). A surplus absorption recess (31) is formed by enlarging the opening end of the mounting hole (21), and surplus resin is absorbed. The surplus absorption recess (31) is positioned inside a region of the mold forming portion (17). Therefore, the amount of molten surplus resin that protrudes outward from the welding tip (24) in the thermal caulking process is reduced.
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公开(公告)号：US20220325673A1
公开(公告)日：2022-10-13
申请号：US17642161
申请日：2020-11-04
Applicant: Hitachi Astemo, Ltd.
Inventor： Sho SATO , Akihito KUBOTA
Abstract: The present invention provides an engine control device that sets a cam signal read value according to a cam signal output from a cam angle sensor, in a front-rear determination position; if the cam signal read value is alternately changed between 1 (LOW) and 2 (HIGH) in the front-rear determination position, sets the cam signal read value to the cam signal expected value; if the cam signal read value is not alternately changed between 1 (LOW) and 2 (HIGH), inverts the cam signal expected value in the control cycle of the previous time, and sets the resultant cam signal expected value; then, when the cam signal read value and the cam signal expected value are equal to each other, distinguishes the cylinders by using the cam signal read value; and when the cam signal read value and the cam signal expected value are different from each other, distinguishes the cylinders by using the cam signal expected value.
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公开(公告)号：US20220324478A1
公开(公告)日：2022-10-13
申请号：US17615964
申请日：2020-06-01
Applicant: HITACHI ASTEMO, LTD.
Inventor： Daisuke MASHIMO , Akihiko SATO , Keisuke AMPO
Abstract: An electronic control device is mounted on a vehicle and executes automatic driving control using a plurality of pieces of map information. Each piece of the map information includes one or more pieces of partial data corresponding to a predetermined geographical area and being information of a predetermined attribute related to a road of the predetermined geographical area. The electronic control device includes a storage unit that stores one or more pieces of the map information, a specification unit that specifies the map information corresponding to a traveling position of the vehicle, and a control unit that determines a control method of the vehicle at a traveling position of the vehicle according to the partial data included in the map information specified by the specification unit.
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公开(公告)号：US20220324281A1
公开(公告)日：2022-10-13
申请号：US17838409
申请日：2022-06-13
Applicant: Hitachi Astemo, Ltd.
Inventor： Ken ISSHIKI , Kyoichi TAGAMI , Noal Van NGUYEN , Eishi ISHIMARU
IPC: B60G17/016 , B60G17/08
Abstract: The present invention achieves suspension control that allows for synchronization of the roll and the pitch of a vehicle. This suspension control device that controls the damping force of a suspension comprises: a target pitch angle calculation unit that calculates a target pitch angle with reference to a roll angle signal; and a target control amount computation unit that calculates the roll posture target control amount referred to for controlling the damping force of the suspension by referring to a steering torque signal and the target pitch angle.
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公开(公告)号：US11466657B2
公开(公告)日：2022-10-11
申请号：US17287931
申请日：2019-10-04
Applicant: Hitachi Astemo, Ltd.
Inventor： Eiichirou Ohata
Abstract: To suppress a failure of ignition of a fuel caused by a spark plug while suppressing wear of an electrode of the spark plug in an internal combustion engine. A control device 1 for an internal combustion engine includes an ignition control unit that controls energization of an ignition coil 300 that applies electric energy to a spark plug 200 that discharges in a cylinder 150 of an internal combustion engine 100 to ignite a fuel. The ignition control unit continuously transmits a first pulse signal (pulse signal for corona discharge) to an igniter connected to the ignition coil 300 before dielectric breakdown between electrodes of the spark plug 200, and continuously transmits a second pulse signal (pulse signal for arc discharge) to the igniter after the dielectric breakdown between the electrodes of the spark plug 200 to control the energization of the ignition coil 300. At this time, a period of the pulse signal for corona discharge is shorter than a period of the pulse signal for arc discharge.
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