FUEL SUPPLY CONTROL SYSTEM FOR MULTIFUEL INTERNAL COMBUSTION ENGINE

摘要

The objective of the present invention is to reduce the amount of the unburned fuel component that is discharged while reducing the consumption of a fuel having relatively high ignition performance in a multifuel internal combustion engine. This fuel supply control system for a multifuel internal combustion engine uses as the fuel a first fuel having a relatively high ignition performance and a second fuel having a relatively low ignition performance, and mixes and combusts the first fuel and the second fuel, with the first fuel as the ignition source. The supply amount Qd of the first fuel is adjusted on the basis of the difference ?RH between a first heat generation rate RHd, which is the heat generation rate when it is assumed that only the first fuel has been burned, and the actual heat generation rate RHa, which is the heat generation rate when the fuel actually is burned (S105-107, S109).