Control Device and Control Method of Engine
US-2015369152-A1 · Dec 24, 2015 · US
Method and device for zero-fuel quantity calibration of a fuel injector
US9109561B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109561-B2 |
| Application number | US-201214366649-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 3, 2012 |
| Priority date | Dec 20, 2011 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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In a method for calibrating a fuel metering system including an injector of an internal combustion engine performing a pilot injection chronologically prior to a main injection, at least two test injections chronologically prior to the pilot injection are provided for the injector, the first test injection being carried out using a first activation duration, in which the injector does not yet open, at least one second test injection being carried out in a subsequent injection cycle using an activation duration which is progressively increased in each case in relation to the first test injection until a change of an operating variable of the fuel metering system or the internal combustion engine results, which activation duration corresponds to a minimum activation duration of the injector.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for calibrating a fuel metering system including an injector of an internal combustion engine, the fuel metering system providing at least one pilot injection chronologically prior to a main injection, the method comprising: applying, using the injector, at least two test injections which occur chronologically prior to the at least one pilot injection, wherein: a first test injection is carried out using a first activation duration in which the inj…
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Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9109561B2 cover?
- In a method for calibrating a fuel metering system including an injector of an internal combustion engine performing a pilot injection chronologically prior to a main injection, at least two test injections chronologically prior to the pilot injection are provided for the injector, the first test injection being carried out using a first activation duration, in which the injector does not yet o…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification F02D41/1498. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 18 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).