KNOCK DETECTION DEVICE OF INTERNAL COMBUSTION ENGINE
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United States of America Patent
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N/A
Issued Date -
Aug 1, 2013
app pub date -
Sep 12, 2012
filing date -
Feb 1, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In order to obtain a knock detection device of an internal combustion engine which satisfies two objects of following capability and separation from a continuous knock generation state, when a background level is calculated by ((current background level)=(filter coefficient)×(previous background level)+(1−filter coefficient)×(output signal from knock sensor)), updating quantity of the background level is limited by ((1−filter coefficient)×(value not lower than maximum value of output signal from knock sensor at time when knock is not generated)).
First Claim
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B2 | JP5826054 | Feb 01, 2012 |
| DE | B4 | DE102012219842 | Oct 30, 2012 |
| CN | B | CN103245410 | Nov 14, 2012 |
International Classification(s)
- 2012 Application Filing Year
- G01L Class
- 815 Applications Filed
- 694 Patents Issued To-Date
- 85.16 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- G01L Class
- 6.57 % this patent is cited more than
- 12 Age