Fuel injection control device for internal-combustion engine

In the present disclosure, pressurized fuel is directly injected from a fuel injection valve into a cylinder, and a fuel pressure is controlled to a target fuel pressure. A target fuel pressure during early depressurization is calculated on the basis of a target amount of intake air that is a target...

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Bibliographic Details
Main Authors Iino, Junya, Nakajima, Masatoshi, Nakashima, Toru, Miki, Kentaro, Kamase, Keita, Tsutsumi, Yujiro
Format Patent
LanguageEnglish
Published 11.02.2020
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:In the present disclosure, pressurized fuel is directly injected from a fuel injection valve into a cylinder, and a fuel pressure is controlled to a target fuel pressure. A target fuel pressure during early depressurization is calculated on the basis of a target amount of intake air that is a target load of an internal-combustion engine, a target fuel pressure during a normal state is set on the basis of an actual amount of intake air that is an actual load of the internal-combustion engine, and a lower one of the target fuel pressure during early depressurization and the target fuel pressure during a normal state is set as the target fuel pressure.
Bibliography:Application Number: US201816176158