FUEL SYSTEM PROTECTION IN A MULTI-FUEL SYSTEM INTERNAL COMBUSTION ENGINE

摘要

A technique for fuel system protection for an internal combustion engine comprising introducing a directly injected fuel into a combustion chamber through a direct fuel injector; introducing a fumigated fuel upstream of an intake valve; selectively operating the internal combustion engine with at least one of the directly injected fuel and the fumigated fuel; determining a temperature of the direct fuel injector as a first function of engine operating parameters; and performing a temperature mitigation technique when the temperature rises above a first predetermined value such that the temperature is maintained below a second predetermined value.