Knock control device of internal combustion engine
US8924134B2 · kind B2 · utility
1Cited by
5References
4Claims
0Family size
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Key dates
| Filing date | Sep 12, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Aug 1, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P5/152
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a knock control device of an internal combustion engine equipped with a control unit which updates a background level based on an output signal from a knock sensor and detects the generation of a knock by comparing a variation of the background level with a knock determination value, a determination as to whether the knock is generated is performed by((variation of first filter value of peak hold value)>((1−filter coefficient)/(1+filter coefficient)×(predetermined value larger than maximum value of variation of peak hold value in case where knock is not generated))).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.