Multi-fuel flow systems and methods with dedicated exhaust gas recirculation

摘要

Systems and methods for fuelling a plurality of cylinders of an internal combustion engine are disclosed. The system includes a dedicated exhaust gas recirculation system for recirculating exhaust gas flow from at least one dedicated cylinder of an engine into an intake system prior to combustion. The system further includes a fueling system to provide a first flow of fuel to each of the plurality of cylinders and a second flow of fuel to each of the dedicated cylinders that is in addition to the first flow of fuel.

主权项

1. A method, comprising:
operating an internal combustion engine including a plurality of cylinders, at least one fuel source that is connected to the plurality of cylinders, an exhaust system, and an intake system, at least one of the plurality of cylinders being a dedicated cylinder operably connected to provide exhaust flow to a dedicated exhaust gas recirculation system and a remaining portion of the plurality of cylinders being operably connected to provide exhaust flow to the exhaust system; providing a first fuel flow from the at least one fuel source to each of the plurality of cylinders; and providing a second fuel flow from the at least one fuel source to each dedicated cylinder while providing the first fuel flow to each of the plurality of cylinders.