Patent · US Expired

Method of detecting combustion misfires

US5861553A · kind A · utility

8Cited by

6References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Janetzke · Hemmingen, DE
Gunther Kossler · Schwieberdingen, DE
Peter Stoss · Illertissen, DE

Key dates

Filing date	Mar 17, 1997
Grant date	Jan 19, 1999
Priority date	—
Expiry date	Mar 17, 2017

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B3/06
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention is directed to a method for detecting combustion misfires in a multi-cylinder internal combustion engine, the method comprising the steps of: determining the rough-running values for the engine individual to the cylinders; determining a quantity for the level of a subset of the rough-running values; forming a reference value by logically coupling the quantity with an offset; and, comparing the rough-running values to the reference value and evaluating a passthrough of the reference value as a misfire.

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