Patent · US Expired

Method of controlling ignition in a multicylinder internal combustion engine

US6032648A · kind A · utility

4Cited by

7References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ulrich Mayer · Weißenhorn, DE
Peter Kaltenbrunn · Bietigheim-Bissingen, DE
Thomas Edelmann · Bietigheim-Bissingen, DE

Key dates

Filing date	Oct 2, 1998
Grant date	Mar 7, 2000
Priority date	—
Expiry date	Oct 2, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01M15/11
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for controlling ignition in a multi-cylinder internal combustion engine, such that the control variables are determined on the basis of the parameters sensed by sensors, and such that after output of the control variables, a misfire monitoring operation is performed. After output of an ignition signal, the torque of the combustion event initiated by the ignition event is sensed and compared with an average of the torques of previous combustion events. If, in this context, a deviation of the currently sensed torque from the average of the torques of a definable number of previous combustion events which is greater than a definable threshold occurs, the misfire detection system is switched to inactive status.

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