A FUEL INJECTION SYSTEM

摘要

A method for controlling the supply of a first fuel and a second fuel to an engine, which engine is fuelled by the first fuel only in a first mode of operation and by a mixture of the first fuel and the second fuel in a second mode of operation, the method comprising the steps of: 1) calculating the mass of first fuel Md required by the engine if running in the first mode; 2) calculating from the mass Md, the fuel energy Fe that the amount of mass Md would provide; 3) determining a minimum reduced amount of diesel fuel Fdmin with which it is desired to operate in the second mode; 4) calculating the amount of second fuel Msub, which together with the reduced amount of diesel fuel Fdmin will provide a fuel energy equivalent to Fe.