A BI-FUEL SYSTEM AND A METHOD FOR OPERATING SUCH A SYSTEM

摘要

The invention relates to a bi-fuel system (100) and a method for operating such a system, in which the following steps are performed by a control system (104) being part of the bi-fuel system (100): determining whether a relative amount of first fuel in the second fuel tank (2) is less than a predetermined minimum relative amount of first fuel in the second fuel tank (MIX %_min), and if said relative amount is less than MIX %_min, supplying first fuel via the fuel return line (18) to the second fuel tank (2), by temporarily opening the return line shut-off valve (12).