Methods for measuring fuel quantity during multipulse fuel injection events in a common rail fuel system
US-2024084757-A1 · Mar 14, 2024 · US
Internal combustion engine
US9840993B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9840993-B2 |
| Application number | US-201514924935-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 28, 2015 |
| Priority date | Oct 30, 2014 |
| Publication date | Dec 12, 2017 |
| Grant date | Dec 12, 2017 |
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Abstract
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An internal combustion engine comprises a fuel injection valve which has a needle, wherein a valve opening speed of the needle during post injection is raised as compared with a valve opening speed of the needle during main injection if a pressure of the fuel is not more than a first predetermined pressure, while the valve opening speed of the needle during the post injection is lowered as compared with the valve opening speed of the needle during the main injection if the pressure of the fuel is not less than a second predetermined pressure that is a pressure larger than the first predetermined pressure, when a requested post injection fuel amount is larger than an injection amount threshold value.
First claim
Opening claim text (preview).
The invention claimed is: 1. An internal combustion engine comprising a fuel injection valve which has a needle and which injects fuel into a cylinder of the internal combustion engine when the valve having the needle is opened, the internal combustion engine further comprising: an electronic control unit comprising at least one processor, wherein, when a requested injection amount of the fuel to be injected by a post injection is larger than an injection amount threshold value,…
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- F02D41/405Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · 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 US9840993B2 cover?
- An internal combustion engine comprises a fuel injection valve which has a needle, wherein a valve opening speed of the needle during post injection is raised as compared with a valve opening speed of the needle during main injection if a pressure of the fuel is not more than a first predetermined pressure, while the valve opening speed of the needle during the post injection is lowered as comp…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02D41/405. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 12 2017 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).