Patent · US Expired

Process for detecting cyclical fluctuations in combustion in an internal combustion engine

US6748315B2 · kind B2 · utility

2Cited by

8References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Frederic Galtier · Montpellier, FR
Hong Zhang · Tegernheim, DE

Key dates

Filing date	Nov 20, 2002
Grant date	Jun 8, 2004
Priority date	—
Expiry date	Dec 24, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/3082
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method of detecting misfires in an internal combustion engine based on the crankshaft speed, in the case of which cylinder segment times are measured and differences between consecutive segment times are analyzed by means of a prescribed algorithm and where one cylinder group is switched off and the analysis is carried out for the cylinder group continuing to be operated.

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