Global Patent Index - EP 1729000 A1

EP 1729000 A1 20061206 - Method for estimating the air/fuel ratio in a cylinder of an internal combustion engine using an extended Kalman filter

Title (en)

Method for estimating the air/fuel ratio in a cylinder of an internal combustion engine using an extended Kalman filter

Title (de)

Auf einem erweiterten Kalmanfilter basiertes Verfahren zur Abschätzung des Kraftstoff/Luft-Verhältnisses in einem Zylinder eines Verbrennungsmotors

Title (fr)

Méthode d'estimation par un filtre de Kalman étendu de la richesse dans un cylindre d'un moteur à combustion

Publication

EP 1729000 A1 20061206 (FR)

Application

EP 06290557 A 20060403

Priority

FR 0505443 A 20050530

Abstract (en)

The method for estimating the richness of the fuel mixture in the cylinders of an i.c. engine with a sensor (SR) located after its exhaust manifold (CE) consists of defining an estimate of the richness measured by the sensor, modelling the transfer function of the sensor, and establishing a physical model in real time of the gases ejected from the cylinders. The model is connected to an extended Kalman-type non-linear estimator, which is used to estimate a real-time value for the fuel mixture richness in each of the cylinders.

IPC 8 full level

F02D 41/14 (2006.01); F02D 41/34 (2006.01)

CPC (source: EP US)

F02D 41/008 (2013.01 - EP US); F02D 41/1458 (2013.01 - EP US); F02D 41/1408 (2013.01 - EP US); F02D 41/1454 (2013.01 - EP US); F02D 2041/1416 (2013.01 - EP US); F02D 2041/1417 (2013.01 - EP US); F02D 2041/143 (2013.01 - EP US); F02D 2041/1431 (2013.01 - EP US)

Citation (applicant)

FR 2834314 A1 20030704 - PEUGEOT CITROEN AUTOMOBILES SA [FR]

Citation (search report)

Designated contracting state (EPC)

DE GB IT

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

EP 1729000 A1 20061206; EP 1729000 B1 20080702; DE 602006001609 D1 20080814; FR 2886346 A1 20061201; FR 2886346 B1 20100827; JP 2006336645 A 20061214; JP 4703488 B2 20110615; US 2006271270 A1 20061130; US 7581535 B2 20090901

DOCDB simple family (application)

EP 06290557 A 20060403; DE 602006001609 T 20060403; FR 0505443 A 20050530; JP 2006149261 A 20060530; US 43762906 A 20060522