Patent · US Active

Method of detecting misfire in an internal combustion engine

US8739613B2 · kind B2 · utility

2Cited by

10References

23Claims

0Family size

Assignee

BRP-POWERTRAIN GMBH & CO KG · AT

Inventors

Andreas Mair · Kirchdorf an der Krems, AT
Thomas Thurner · Kirchheim unter Teck, DE

Key dates

Filing date	May 6, 2011
Grant date	Jun 3, 2014
Priority date	—
Expiry date	May 24, 2031

Classification

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

Abstract

A method of detecting misfire in an internal combustion engine comprises: sensing a temporal signature of a lateral displacement of the engine, performing a spectral analysis of the temporal signature of the lateral displacement to extract a magnitude of a predetermined frequency, and determining that misfiring in at least one of the plurality of cylinders has occurred based on the magnitude of the predetermined frequency. The predetermined frequency is associated with one of a plurality of orders of the engine. The one of the plurality of orders is representative of engine displacement due to in-cylinder pressures. Other methods of detecting misfire and a vehicle are also presented.

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