NOVELTY - The system has tanks to hold and supply different types of combustible fuels e.g. petroleum fuel, and low-pressure fuel pumps connected to the tanks by tubes (22, 23, 28, 34, 43). Control valves (29, 32) alter and control the rate of flow and pressure of the fuel at various places. The fuels are mixed at a specified ratio in a carburettor system. Sensors (24) monitor pressure of the fuels in an accumulator (49) and forward data to a microprocessor control unit (19) which activates the pump and the control valve to maintain the supply of fuels in a circulation system.    USE - Multi-fuel e.g. petroleum fuel, diesel fuel, vegetable oil, bio-diesel fuel, gaseous fuel e.g. propane, methane, ethane, propane, hydrogen, butane and natural gas and liquefied hydrocarbon gas fuel, co-injection system for internal combustion engine and turbine engine that is utilized in a motor vehicle and marine vehicles, and in static application such as electrical generator.    ADVANTAGE - The fuels are mixed at the specified ratio in the carburetor system and the sensors monitor the pressure of the fuel in the accumulator and forward data to the microprocessor control unit, thus improving utilization of the thermal content of the fuels and the combustion efficiency, and increasing power output while decreasing the fuel consumption.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a method of regulating pressures and rates of flow of different types of fuel    (2) an operator control for managing the operation of the multi-fuel co-injection system    (3) an array of dials, knobs and switches on an operator control panel    (4) a pressure regulator to regulate the pressure of fuel mix    (5) a high pressure reserve tank for generating hydrogen and oxygen    (6) an electrolysis for applying oxygen generated into the liquid fuel stream    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of multi-fuel co-injection system.    Microprocessor control unit (19)    Pressure regulators (21, 27)    Tubes (22, 23, 28, 34, 43)    Sensors (24)    Control valves (29, 32)    Displacement pumps (31)    Electrical contact (41)    Accumulator (49)    Hose (50)    Combustion chamber (52)    Grid (53)