Internal combustion engine transient fuel control

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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Details

F02M 53/06 (2006.01) F01N 11/00 (2006.01) F02D 41/10 (2006.01) F02D 41/14 (2006.01) F02D 41/30 (2006.01) F02M 13/08 (2006.01) F02M 17/24 (2006.01) F02M 31/135 (2006.01) F02M 31/16 (2006.01) F02M 31/18 (2006.01) F02M 51/06 (2006.01) F02M 57/00 (2006.01)

Patent

CA 2513264

An apparatus and method for improving the transient response of a spark- ignited fuel-injected internal combustion engine is disclosed. This is accomplished by employing one or more novel capillary fuel injectors (700). These devices are port fuel injectors (700) modified by inserting one or more relatively small diameter heated tubular capillaries (712) between the fuel line and a conventional injector. Sufficient heating can be produced so that flash vaporization occurs as the fuel exits the injector. The heaters are turned on using control algorithms that can be based on exhaust gas oxygen concentration, load on the engine, and accelerator pedal position.

L'invention concerne un appareil et un procédé permettant d'améliorer la réponse transitoire d'un moteur à combustion interne, à étincelle et à injection. L'utilisation d'un ou plusieurs injecteurs capillaires de carburant permet d'obtenir un tel résultat. Ces dispositifs sont des injecteurs de carburant dans l'orifice d'admission modifiés par introduction d'un ou de plusieurs capillaires tubulaires chauffés de diamètre relativement petit entre la canalisation de carburant et un injecteur classique. Un chauffage suffisant peut être produit de manière qu'une vaporisation instantanée ait lieu au moment où le carburant sort de l'injecteur. Les éléments chauffants sont enclenchés au moyen d'algorithmes de commande pouvant être fondés sur la concentration d'oxygène des gaz d'échappement, la charge sur le moteur et la position de l'accélérateur.

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