F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
F02B 77/04 (2006.01)
Patent
CA 2603729
Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.
L'invention concerne un système de gestion de carburant destiné au fonctionnement amélioré d'un moteur à essence à allumage commandé. Des injecteurs injectent un agent antidétonant, tel que de l'éthanol directement dans un cylindre. Il est souhaitable que l'injection directe se produise après la fermeture du clapet d'aspiration. Il est, également, souhaitable que le fonctionnement stoïchiométrique avec un catalyseur à trois voies soit utilisé pour minimiser les émissions. En outre, il est aussi souhaitable que l'agent antidétonant présente une chaleur de vaporisation par unité d'énergie de combustion qui est au moins égale à trois fois celle de l'essence.
Bromberg Leslie
Cohn Daniel R.
Heywood John B.
Fetherstonhaugh & Co.
Massachusetts Institute Of Technology
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