Control system for internal combustion engines with exhaust...

Details Control system for internal combustion engines with exhaust... Control system for internal combustion engines with exhaust...

F - Mech Eng,Light,Heat,Weapons

02

B

F02B 47/08 (2006.01) F02B 75/10 (2006.01) F02D 21/08 (2006.01) F02D 41/00 (2006.01) F02D 41/04 (2006.01) F02M 25/06 (2006.01)

Patent

CA 2079568

A control system for an internal combustion engine estimates an amount of adherent fuel adhering to the inner surface of the intake passage, as well as an amount of carried-off fuel evaporated form fuel adhering to the inner surface of the intake passage and carried into combustion chambers, determines an amount of supply fuel to be supplied to the engine, based upon operating conditions of the engine, the estimated adherent fuel amount, and the estimated carried-off fuel amount, and supplies the determined supply fuel amount into the intake passage. The control system calculates an amount of exhaust gases to be recirculated from the exhaust passage to the intake passage, and corrects the estimated adherent fuel amount and the estimated carried-off fuel amount, based upon the calculated exhaust gas recirculating amount, based upon the calculated exhaust gas recirculating amount. Advantageously, the exhaust gas recirculating amount is calculated based upon dynamic characteristics of an exhaust gas recirculation control valve and those of exhaust gases being recirculated.

Système de contrôle de moteur à combustion interne calculant la quantité approximative de carburant qui adhère à la paroi interne de la tubulure d'admission et la quantité évaporée de ce carburant qui est véhiculée vers les chambres de combustion; ce système détermine la quantité de carburant qui doit être envoyée au moteur en se fondant sur les conditions de marche du moteur, sur la quantité estimative de carburant adhéré et sur la quantité estimative de carburant véhiculé, et il fournit la quantité requise de carburant à la tubulure d'admission. Le système de contrôle calcule la quantité de gaz d'échappement qui doit être recyclé de la tubulure d'échappement à la tubulure d'admission et il corrige la quantité estimative de carburant adhérant aux parois et la quantité estimative de carburant véhiculé, d'après la quantité calculée de gaz d'échappement recyclé. L'invention présente l'avantage suivant : la quantité de gaz d'échappement recyclé est fondée sur les caractéristiques dynamiques d'une soupape de recyclage des gaz d'échappement et sur celles des gaz d'échappement qui sont recyclés.

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