Strategy for fueling a diesel engine by selective use of...

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

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F02B 17/00 (2006.01)

Patent

CA 2570752

A compression ignition engine (60) has a control system (66) for processing data, one or more combustion chambers (62), and fuel injectors (64) for injecting fuel into the chambers. In a first embodiment, the control system controls fueling by processing engine speed and load, to select one of three fueling modes (HCCI+RVT, HCCI+VVT, and CD+RVT) for operating the engine. In a second embodiment, one of four modes (HCCI+RVT, HCCI+IVC, HCCI+IVC+EVC, and CD+RVT) is selected. The invention extends the range for using HCCI combustion.

L'invention porte sur un moteur à allumage par compression (60) comportant: un système de gestion (66) des données; une ou plusieurs chambres de combustion (62); et des injecteurs (64) injectant le carburant dans les chambres. Dans une première exécution le système de gestion règle les flux de carburant en fonction du régime du moteur et de la charge en sélectionnant l'un des trois modes suivants: (HCCI+RVT, HCCI+VVT, et CD+RVT) (Figure 1). Dans une deuxième exécution, il effectue ce réglage en sélectionnant l'un des quatre modes suivants: (HCCI+RVT, HCCI+IVC, HCCI+IVC+EVC, et CD+RVT) (Figure 5). L'invention étend donc les possibilités d'utilisation de la combustion HCCI.

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