Apparatus for processing sensor signal from knock sensor of internal combustion engine
US7310575B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2006 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Dec 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A knock sensor signal processing apparatus for an engine, which performs a series of A/D conversions of a knock sensor signal during each of successive knock judgement intervals to obtain A/D converted values for use in judging if engine knocking is occurring in a cylinder, derives compensation coefficients during an interval between the end of a knock judgement interval corresponding to a cylinder and the start of deriving knock sensor signal A/D values in a succeeding knock judgement interval for a succeeding cylinder, and applies these coefficients to correct the A/D converted values derived in the second knock judgement interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.