Method for recognizing a state of change of a fuel injector
US-2018223761-A1 · Aug 9, 2018 · US
Control device
US11118523B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11118523-B2 |
| Application number | US-201716328866-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 2, 2017 |
| Priority date | Sep 28, 2016 |
| Publication date | Sep 14, 2021 |
| Grant date | Sep 14, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
Provided is a fuel injection device and a control unit therefor which enable reliable ignition even in a case where fuel pressure is low immediately after starting an engine. In the control unit for controlling an injector injecting fuel into an internal combustion engine, a plurality of injectors is provided in the internal combustion engine, a static flow rate of a first injector is configured to be smaller than a static flow rate of a second injector. In a case where a fuel pressure of fuel supplied by a pressurizing unit is lower than a set value set lower than a fuel pressure in warming up, an injection ratio of the first injector is controlled to increase according to a difference between a fuel pressure of fuel from the pressurizing unit and a fuel pressure in warming up.
First claim
Opening claim text (preview).
The invention claimed is: 1. A controller configured to control an injector injecting fuel into an internal combustion engine, wherein a plurality of injectors is provided in the internal combustion engine, and wherein a static flow rate of a first injector of the plurality of injectors is smaller than a static flow rate of a second injector of the plurality of injectors, the controller configured to: when a fuel pressure of fuel supplied by a pressurizing unit is determined to be lower than a set value, the set value being lower than a fuel pressure during warm-up of the internal combustion engine, control an injection ratio of the first injector to increase according to a difference between a fuel pressure from the pressurizing unit and a fuel pressure during warm-up of the internal combustion engine, wherein the controller is configured to, when the fuel pressure is less than a threshold value, control the injection ratio of the first injector to increase by an amount, and control the injection ratio of the second injector to decrease by the amount. 2. A controller configured to control an injector injecting fuel into an internal combustion engine, wherein a plurality of injectors is provided in the internal combustion engine, an average particle diameter of fuel droplets ejected from a first injector of the plurality of injectors is smaller than an average particle diameter of fuel droplets ejected from a second injector of the plurality of injectors, the controller configured to: when a fuel pressure of fuel supplied by a pressurizing unit is determined to be lower than a set value, the set value being lower than a fuel pressure during warm-up of the internal combustion engine, control an injection ratio of the first injector to increase according to a difference between a fuel pressure from the pressurizing unit and a fuel pressure during warm-up of the internal combustion engine.
Assignees
Inventors
Classifications
at cold start (F02D41/067 takes precedence) · CPC title
Electrical control not provided for in groups F02D41/00 - F02D43/00 · CPC title
- F02D41/06Primary
for engine starting or warming up {(F02D41/0255 takes precedence)} · CPC title
Engine temperature · CPC title
- F02D41/3094Primary
the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder · CPC title
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Frequently asked questions
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- What does patent US11118523B2 cover?
- Provided is a fuel injection device and a control unit therefor which enable reliable ignition even in a case where fuel pressure is low immediately after starting an engine. In the control unit for controlling an injector injecting fuel into an internal combustion engine, a plurality of injectors is provided in the internal combustion engine, a static flow rate of a first injector is configure…
- Who is the assignee on this patent?
- Hitachi Automotive Systems Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02D41/06. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Sep 14 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).