Fuel injection control apparatus
US-2016377013-A1 · Dec 29, 2016 · US
Fuel injection control system for direct-injection engine
US8977472B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8977472-B2 |
| Application number | US-201113183772-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 15, 2011 |
| Priority date | Jul 22, 2010 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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In an engine of a direct-injection type, a split injection (a fuel injection in an intake stroke and a fuel injection in a compression stroke) is carried out. A compression-stroke injection amount is gradually decreased or increased when the split injection is carried out. Engine rotational speed, which varies by combustion of such injected fuel, is detected for respective fuel injection amounts, which are varied (decreased or increased) as above. Such a fuel injection amount, with which the engine rotational speed becomes maximum, is calculated and set as a basic injection amount for the compression-stroke injection. The fuel injection in the compression stroke is then controlled based on the basic injection amount.
First claim
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What is claimed is: 1. A fuel injection control system for a direct-injection engine comprising: fuel injection valves for directly injecting fuel into respective cylinders of the engine; and an electronic control unit for controlling fuel injections by the fuel injection valves to carry out a split injection, which includes a fuel injection in an intake stroke and a fuel injection in a compression stroke of the engine, wherein the electronic control unit includes: an inject…
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- What does patent US8977472B2 cover?
- In an engine of a direct-injection type, a split injection (a fuel injection in an intake stroke and a fuel injection in a compression stroke) is carried out. A compression-stroke injection amount is gradually decreased or increased when the split injection is carried out. Engine rotational speed, which varies by combustion of such injected fuel, is detected for respective fuel injection amount…
- Who is the assignee on this patent?
- Kita Masayuki, Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification F02D41/32. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 10 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).