Patent · US Expired

Method for detecting combustion misfires in an internal combustion engine

US6062071A · kind A · utility

18Cited by

5References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Henn · Lehre, DE
Anton Angermaier · Landshut, DE

Key dates

Filing date	Jun 1, 1998
Grant date	May 16, 2000
Priority date	—
Expiry date	Jun 1, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/1015
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for detecting combustion misfires in an internal combustion engine is based on the speed of rotation of the crankshaft. An unsteady running value is derived from measured cylinder segment times and subsequent correction of mechanical teeth defects. A disturbance caused by torsional oscillations of the crankshaft is taken into account by a cylinder-selective disturbance variable compensation dependent on load and speed of rotation.

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