Air-fuel ratio control system for internal combustion engines

Details Air-fuel ratio control system for internal combustion engines Air-fuel ratio control system for internal combustion engines

F - Mech Eng,Light,Heat,Weapons

02

M

F02M 25/00 (2006.01) F02D 21/08 (2006.01) F02D 41/00 (2006.01)

Patent

CA 2133013

An air-fuel ratio control system for an internal combustion engine controls an amount of fuel supplied to the engine. Operating conditions of the engine, including engine rotational speed and intake pressure, are detected. Also detected is a valve opening of a recirculation control valve arranged in an exhaust recirculation passage, for controlling recirculation of exhaust gases. An amount of recirculation gas is determined based on a detected value of the valve opening of the recirculation control valve. A fuel supply amount is calculated based on the engine rotational speed and the intake pressure. The fuel supply amount is corrected based on the amount of recirculation gas determined.

Système de réglage du rapport air-carburant d'un moteur à combustion interne commandant la quantité de carburant fournie au moteur. Les conditions d'utilisation du moteur, y compris la vitesse de rotation du moteur et la pression d'admission, sont mesurées. On mesure également l'ouverture du clapet de la soupape de commande de recyclage des gaz d'échappement, qui se trouve dans un passage pour le recyclage des gaz d'échappement, afin de régler le recyclage de ces gaz. La quantité de gaz d'échappement de recyclage est déterminée en tenant compte de la valeur mesurée de l'ouverture du clapet de la soupape de commande de recyclage des gaz d'échappement. La quantité de carburant à fournir est calculée en tenant compte de la vitesse de rotation du moteur et de la pression d'admission. La quantité de carburant à fournir est corrigée selon la quantité de gaz d'échappement de recyclage qui a été déterminée.

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