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1. (WO2001000978) METHOD AND APPARATUS FOR DETERMINING THE A/F RATIO OF AN INTERNAL COMBUSTION ENGINE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/000978 International Application No.: PCT/EP2000/005581
Publication Date: 04.01.2001 International Filing Date: 17.06.2000
IPC:
F02D 41/06 (2006.01) ,F02D 41/14 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
02
Circuit arrangements for generating control signals
04
Introducing corrections for particular operating conditions
06
for engine starting or warming up
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
02
Circuit arrangements for generating control signals
14
Introducing closed-loop corrections
Applicants:
HERAEUS ELECTRO-NITE INTERNATIONAL N.V. [BE/BE]; Centrum Zuid 1105 B-3530 Houthalen, BE
Inventors:
GRIFFIN, Joseph, R.; US
Agent:
KÜHN, Hans-Christian; Heraeus Holding GmbH Schutzrechte Heraeusstrasse 12-14 D-63450 Hanau, DE
Priority Data:
60/141,39029.06.1999US
Title (EN) METHOD AND APPARATUS FOR DETERMINING THE A/F RATIO OF AN INTERNAL COMBUSTION ENGINE
(FR) PROCEDE ET APPAREIL POUR DETERMINER LE RAPPORT AIR/CARBURANT D'UN MOTEUR A COMBUSTION INTERNE
Abstract:
(EN) A method is disclosed for using a computer for determining an air-to-fuel (A/F) ratio of an internal combustion engine in which information characteristic of the engine relating the A/F ratio of the engine, the exhaust gas temperature of the engine, the speed of the engine and a parameter related to the load of the engine is previously stored in the computer. The method comprises the steps of: measuring the exhaust gas temperature of the engine; measuring the speed of the engine; measuring the parameter related to the load of the engine; computing the A/F ratio based on the previously stored information, the measured exhaust gas temperature, the measured speed and the measured parameter related to the load; and outputting a signal representative of the A/F ratio.
(FR) L'invention concerne un procédé d'utilisation d'un ordinateur pour déterminer le rapport air/carburant d'un moteur à combustion interne dans lequel les informations caractéristiques du moteur en ce qui concerne le rapport air/carburant du moteur, la température du gaz d'échappement du moteur, la vitesse du moteur et un paramètre lié à la charge du moteur sont préalablement stockés dans un ordinateur. Le procédé consiste : à mesurer la température du gaz d'échappement du moteur, à mesurer le paramètre lié à la charge du moteur, à calculer le rapport air/carburant fondé sur les informations stockées préalablement, la température mesurée du gaz d'échappement, la vitesse mesurée et le paramètre mesuré lié à la charge, et à émettre un signal représentatif du rapport air/carburant.
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Designated States: BR, JP, KR
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)