公开(公告)号：US20250101928A1

公开(公告)日：2025-03-27

申请号：US18730828

申请日：2023-02-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshihiro SUKEGAWA ,  Kengo KUMANO ,  Yoshihiko AKAGI ,  Kazuhiro ORYOJI

IPC: F02D41/22 ,  F01P3/00 ,  F01P3/08 ,  F01P5/10 ,  F01P7/14

Abstract: This in-vehicle control device includes: a cooling period setting unit that sets a timing prior to the start timing of a predicted knock occurrence period as the increasing timing of a cooling amount of a combustion room, and sets a timing prior to an end timing of the predicted knock occurrence period as the decreasing timing of the cooling amount of the combustion room; and a cooling amount change unit that changes the cooling amount of the combustion room by a cooling mechanism on the basis of the set increasing and decreasing timings and a target cooling amount set by a target cooling amount setting unit.

公开(公告)号：US20230054131A1

公开(公告)日：2023-02-23

申请号：US17792515

申请日：2021-01-22

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshihiro SUKEGAWA ,  Shinya SATO ,  Masayuki SARUWATARI ,  Atsushi SHIMADA

IPC: F02D41/00

Abstract: To accurately estimate a combustion state even in a case where the combustion state in a combustion chamber greatly changes. According to an aspect of the present invention, an internal combustion engine control device 12 includes a rotational speed calculation unit 122a that calculates a crank rotational speed of an internal combustion engine, an extreme value timing calculation unit 122b that calculates an extreme value timing at which the crank rotational speed calculated by the rotational speed calculation unit 122a becomes an extreme value, a combustion-state-calculation-means selection unit 122c that selects combustion state calculation means for calculating a combustion state in a combustion chamber based on an operation state of the internal combustion engine, and a combustion state estimation unit 122d that estimates the combustion state in the combustion chamber from the extreme value timing of the crank rotational speed by using the combustion state calculation means selected by the combustion-state-calculation-means selection unit 122c.

公开(公告)号：US20230016942A1

公开(公告)日：2023-01-19

申请号：US17784914

申请日：2020-12-15

Applicant: HITACHI ASTEMO, LTD.

Inventor： Yoshihiro SUKEGAWA ,  Masayuki SARUWATARI ,  Shinya SATO

IPC: F02D41/00 ,  F02D41/14

Abstract: Provided is an internal combustion engine control device that is capable of accurately estimating a stable combustion state at low cost. An internal combustion engine control device according to one aspect of the present invention includes: a rotational speed calculation unit 122a that calculates a time-series value of a crank rotational speed of an internal combustion engine; a rotational, speed phase calculation unit 122b that calculates a phase of the crank rotational speed from the time-series value of the crank rotational speed calculated by the rotational speed calculation unit; and a cycle variation calculation unit 122c that calculates the magnitude of variation between cycles of the phase of the crank rotational speed calculated by the rotational speed phase calculation unit.

公开(公告)号：US20220120249A1

公开(公告)日：2022-04-21

申请号：US17418955

申请日：2020-02-07

Applicant: Hitachi Astemo, Ltd.

Inventor： Ryo KUSAKABE ,  Yoshihiro SUKEGAWA ,  Masayuki SARUWATARI

IPC: F02M61/18 ,  F02D41/40

Abstract: An object of the present invention is to enable forming of fuel sprays capable of suppressing discharge of PN, HC, and the like. Thus, in a fuel injection device 100 having a plurality of injection holes, the fuel injection device includes a first injection hole group 801 that is directed in a direction on an exhaust valve 211 side with respect to an intake valve 205 side, and a second injection hole group 802 that is directed in a direction on the intake valve 205 side with respect to the exhaust valve 211 side. A flow rate of the second injection hole group 802 is larger than a flow rate of the first injection hole group 801.

公开(公告)号：US20220009479A1

公开(公告)日：2022-01-13

申请号：US17413785

申请日：2020-02-05

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshihiro SUKEGAWA ,  Masayuki SARUWATARI

IPC: B60W20/20 ,  B60W20/40

Abstract: Provided is a hybrid vehicle control device excellent in quietness while suppressing knocking within an allowable limit. The hybrid vehicle control device of an aspect of the invention is a hybrid vehicle control device that controls a hybrid vehicle including a motor that drives wheels, a generator that supplies electric power to the motor, and an engine configured by an internal combustion engine that drives the generator, and includes a control unit that calculates a knock index value indicating a knock degree of the engine at an engine operating point represented by a relationship between an engine rotational speed and an engine torque, and controls the engine rotational speed and the engine torque based on the knock index value. As the knock index value decreases, the control unit sets the target engine rotation speed to be lower and the target engine torque to be higher in the target power generation amount.

公开(公告)号：US20210388790A1

公开(公告)日：2021-12-16

申请号：US17291067

申请日：2019-10-11

Applicant: Hitachi Astemo, Ltd.

Inventor： Ryo KUSAKABE ,  Yoshihiro SUKEGAWA ,  Masayuki SARUWATARI

IPC: F02D41/20 ,  F02M51/06 ,  F02M61/18 ,  F02D41/40

Abstract: A shot variation in injection quantity of a fuel injection device is reduced. A control device according to an aspect of the present invention performs a first current control for a solenoid by a first current waveform by applying a reverse voltage to the solenoid before a mover or a valve collides with a fixed portion, when an injection quantity of a fuel from opening to closing of the valve of the fuel injection device is a set value or more. In addition, the control device performs a second current control for the solenoid by a second current waveform so that a current larger than a holding current holding the mover or the valve in a state of being in contact with the fixed portion flows to the solenoid, until the mover or the valve collides with the fixed portion, when the injection quantity of the fuel from opening to closing of the valve is less than the set value.

公开(公告)号：US20220220908A1

公开(公告)日：2022-07-14

申请号：US17595675

申请日：2020-03-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshihiro SUKEGAWA ,  Masayuki SARUWATARI ,  Shinya SATO ,  Yoshiaki NAGASAWA

IPC: F02D35/02 ,  F02D45/00 ,  F02D37/02

Abstract: Provided is an internal combustion engine control unit that controls an engine by detecting combustion characteristics with a simple configuration robust to disturbance such as noise. Therefore, the internal combustion engine control unit (ECU 12) of the present embodiment includes a rotational speed calculation unit 122a that calculates a crank rotational speed of an internal combustion engine (engine 1); an extreme value timing calculation unit 122b that calculates an extreme value timing of the crank rotational speed calculated by the rotational speed calculation unit 122a; and a combustion state estimation unit (combustion phase calculation unit 122c) that estimates a combustion state based on the extreme value timing of the crank speed calculated by the extreme value timing calculation unit 122b.