Oil jet abnormality determination apparatus of internal combustion engine and control apparatus of internal combustion engine
US-2015377115-A1 · Dec 31, 2015 · US
Knock control apparatus for internal combustion engine
US8949006B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8949006-B2 |
| Application number | US-201113251939-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 3, 2011 |
| Priority date | Oct 4, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A knock control apparatus for internal combustion engine includes: a knock signal normalization unit that normalizes a knock signal extracted from an output signal of a knock sensor; a knock determination threshold setting unit that sets a knock determination threshold on the basis of the normalized knock signal; a knock intensity computation unit that calculates knock intensity on the basis of the normalized knock signal and the set knock determination threshold; a knock determination unit that determines a presence or absence of a knock on the basis of the calculated knock intensity; and a knock correction amount computation unit that calculates a knock correction amount to correct the calculated knock intensity in a case where an occurrence of a knock is determined. The knock signal normalization unit normalizes a standard deviation of the knock signal by dividing the knock signal by an average value of the knock signal.
First claim
Opening claim text (preview).
What is claimed is: 1. A knock control apparatus for an internal combustion engine, comprising: a knock sensor that detects a vibration caused by a knock of the internal combustion engine; a knock signal normalization unit that normalizes a knock signal extracted from an output signal of the knock sensor and obtains the normalized knock signal; a knock determination threshold setting unit that sets a knock determination threshold on the basis of the normalized knock signal;…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02P5/152Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US8949006B2 cover?
- A knock control apparatus for internal combustion engine includes: a knock signal normalization unit that normalizes a knock signal extracted from an output signal of a knock sensor; a knock determination threshold setting unit that sets a knock determination threshold on the basis of the normalized knock signal; a knock intensity computation unit that calculates knock intensity on the basis of…
- Who is the assignee on this patent?
- Matsushima Yuhei, Hagari Hideki, Saito Toshikatsu, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification F02P5/152. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 03 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).