Patent · US Expired

Method for detecting knocking combustion in the operation of an internal combustion engine

US6655191B2 · kind B2 · utility

1Cited by

13References

30Claims

0Family size

Assignees

Daimlerchrysler AG · US
Temic Telefunken Microelectronik · DE

Inventors

Peter Hohner · Echterdingen, DE
Klaus Knolmayer · Schwabach, DE
Joerg Miroll · Alsdorf, DE
Linhard Niemetz · Rednitzhembach, DE

Key dates

Filing date	Jun 27, 2001
Grant date	Dec 2, 2003
Priority date	—
Expiry date	Jun 27, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02P2017/128
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method for detecting knocking combustion during the operation of an internal combustion engine with a device for measuring the ionic current, the raw ionic current signal or the evaluated value of the knocking intensity are normalized. This enables the value of the knocking intensity to be reliably compared with a threshold value. The normalization avoids the falsifying influence of large intensity fluctuations of the raw ionic current signal from one combustion cycle to the next without any relation to the true knocking intensity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.