| 主权项 |
1. A method, comprising:
operating an internal combustion engine system including an intake connected to an engine with at least one cylinder and at least two fuel sources operably connected to the engine to provide a diesel fuel and a gaseous fuel to the at least one cylinder to produce a torque output in a dual fuel mode of operation, wherein the intake is coupled to the at least one cylinder to provide a charge flow from the intake to the at least one cylinder, the internal combustion engine system further including an exhaust with an aftertreatment system connected to the at least one cylinder; operating the engine in a diesel only fuelling mode of operation of the engine in response to a dual fuel override condition occurring during the dual fuel mode of operation resulting from at least one of a selection of a diesel only mode from a fuel source selector, a determination of a gaseous fuel supply deficiency associated with the gaseous fuel, a determination of a gaseous fuel quality deficiency associated with the gaseous fuel, a determination of an engine protection limit violation associated with the engine, and a determination of an aftertreatment system management requirement associated with the aftertreatment system; and operating the internal combustion engine by providing diesel fuel only to the at least one cylinder in response to selecting the diesel only fuelling mode. |
