公开(公告)号：US20240360797A1

公开(公告)日：2024-10-31

申请号：US18287738

申请日：2022-02-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Akiyasu MIYAMOTO ,  Henning SAUERLAND ,  Naoki YONEYA ,  Yoshihito YASUKAWA

IPC: F02D19/08 ,  F02D41/04

CPC classification number: F02D19/081 ,  F02D41/04

Abstract: An internal combustion engine control device includes a valve closing time calculation unit, a valve closing delay time difference calculation unit that normalizes a plurality of valve closing delay times with a fuel pressure and calculates a valve closing delay time difference, a content rate calculation unit that calculates the synthetic fuel content rate of a fuel stored in a fuel tank based on characteristic data indicating the relationship between the valve closing delay time difference and the synthetic fuel content rate of synthetic fuel contained in the fuel, and a combustion control unit that controls an internal combustion engine such that the exhaust temperature of an exhaust gas discharged from a combustion chamber becomes equal to or higher than a threshold temperature based on the synthetic fuel content rate.

公开(公告)号：US20230067661A1

公开(公告)日：2023-03-02

申请号：US17792534

申请日：2021-01-28

Applicant: Hitachi Astemo, Ltd.

Inventor： Naoki YONEYA ,  Masayuki SARUWATARI ,  Yoshihito YASUKAWA ,  Maung Maung AYE

IPC: F02D41/30 ,  F02D41/38 ,  F02P5/15

Abstract: The present subject matter relates to a control unit for controlling an internal combustion engine, wherein the internal combustion engine includes at least one cylinder 100, at least one combustion chamber 90 within which a fuel is burned, at least one fuel injector 40, 50, at least one ignition device 60, and an oxygen determination unit 20 configured to determine the content of oxygen in the fuel, wherein the control unit 10 is configured to control the internal combustion engine based on the content of oxygen in the fuel detected by the oxygen determination unit 20.

公开(公告)号：US20250012245A1

公开(公告)日：2025-01-09

申请号：US18710327

申请日：2022-11-17

Applicant: Hitachi Astemo, Ltd.

Inventor： Maung Maung AYE ,  Yoshihito YASUKAWA ,  Masayuki SARUWATARI

IPC: F02M37/08

Abstract: The subject matter described here relates to a method, a controller and computer program product for controlling a fuel pump of a fuel supply system for an internal combustion engine, and a fuel supply system for an internal combustion engine.
The problem to be solved is not being provided with an efficient fuel supply system capable of supplying various types of fuels without bubble formation under different environmental conditions.
The method comprises the steps of measuring a pressure of a fuel in the fuel supply system by a first measuring means; measuring a temperature of the fuel by a second measuring means; measuring a physical parameter of the fuel by a third measuring means; determining, by a control unit, a fuel type based on the measured physical parameter of the fuel, a vapor pressure of the fuel based on the determined fuel type and the measured temperature, and a pressure amplitude of the measured pressure; calculating, by the control unit, a first target pressure value as a sum of the determined vapor pressure, the determined pressure amplitude and a predetermined pressure margin, and a pressure difference between the first target pressure value and a predetermined second target pressure value; and if the calculated pressure difference is greater than zero, adjusting, by the control unit, a control value for controlling an operating point of the fuel pump based on the calculated pressure difference.

公开(公告)号：US20220112869A1

公开(公告)日：2022-04-14

申请号：US17424369

申请日：2020-02-04

Applicant: Hitachi Astemo, Ltd.

Inventor： Andrea MARCHI ,  Masayuki SARUWATARI ,  Yoshihito YASUKAWA

IPC: F02M35/10 ,  F02B29/00 ,  F02D13/02 ,  F02B39/10

Abstract: The present invention relates to a method and a control unit for avoiding condensation of humidity in an intake system of an internal combustion engine after engine switch off. Condensed liquid in the intake system of the stopped engine can lead to icing, corrosion and a hydrostatic lock at the next engine start. To prevent such an engine damage, it is necessary to determine if and in which amount condensed liquid occurs in the cooled intake system and to initiate appropriate actions to eliminate the liquid therefrom. The present invention predicts the occurrence of condensation in the intake system of the cooled engine and initiates corrective measures at engine switch off and during the cooling down period.