AIR−FUEL RATIO CONTROLLER OF INTERNAL COMBUSTION ENGINE

An air−fuel ratio controller, wherein, based on the emission air−fuel ratio of exhaust emission flowing into an exhaust emission control catalyst (19) disposed in the exhaust emission passage (7) of an engine (1), the exhausted amount of at least one specific component contained in the exhaust emiss...

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Bibliographic Details
Main Authors NAGAI, TOSHINARI, KURODA, YUKIO, UCHIDA, TAKAHIRO, BABA, NAOKI, KOJIMA, SHINJI, KATAYAMA, AKIHIRO, KATO, NAOTO, SAWADA, HIROSHI, KUZE, YASUHIRO
Format Patent
LanguageEnglish
French
Japanese
Published 27.12.2002
Edition7
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
STEAM ENGINES
TRANSPORTING
WEAPONS
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Summary:An air−fuel ratio controller, wherein, based on the emission air−fuel ratio of exhaust emission flowing into an exhaust emission control catalyst (19) disposed in the exhaust emission passage (7) of an engine (1), the exhausted amount of at least one specific component contained in the exhaust emission flowing out of the exhaust emission control catalyst is estimated by using a model determined by considering the mass balance of the specific component, and the air−fuel ratio is controlled so that an estimated value becomes a target value. L'invention concerne un dispositif de commande du rapport air-combustible dans lequel, en fonction du rapport air-combustible de l'émission de gaz d'échappement passant dans un catalyseur de commande d'émission de gaz d'échappement (19) placé dans le passage d'émission de gaz d'échappement (7) d'un moteur (1), la quantité libérée d'au moins un constituant spécifique contenu dans l'émission de gaz d'échappement passant dans le catalyseur de commande d'émission d'échappement vers l'extérieur est estimée à l'aide d'un modèle. Ce modèle est déterminé en prenant en compte le bilan pondéral du constituant spécifique, et le rapport air-combustible est commandé de façon qu'une valeur estimée devienne une valeur cible.
Bibliography:Application Number: WO2002JP06071