Fuel injection valve

A fuel injection assembly for injecting a mixture of fuel and a gaseous medium into an intake tube of an internal combustion engine, which comprises:

• a mixture guidance tube having an inner surface which defines a mixture guidance channel and a centrally disposed injection opening from a downstream end of the mixture guidance channel into the intake tube;
• a source of pressurized fuel;
• a source of pressurized gaseous medium;
• a fuel injection valve connected to receive pressurized fuel from the fuel source;
• first directing means, connected to receive pressurized fuel from the injection valve, for directing fuel centrally into an upstream end of the mixture guidance channel when the injection valve is open;
• and
• second directing means, connected to receive pressurized gaseous medium from the gaseous medium source, for directing gaseous medium peripherally into the upstream end of the mixture guidance channel so that the fuel entering the mixture guidance channel is surrounded by the gaseous medium entering the mixture guidance channel;
• the injection opening and the mixture guidance channel being embodied so as to attain sufficiently high flow velocities of the fuel and gaseous medium therethrough so that no fuel is mixed with an outermost portion of the gaseous medium flowing over the inner surface of the mixture guidance tube during passage of the mixture through the mixture guidance channel and the injection opening into the intake tube, to thus avoid wetting of the mixture guidance tube inner surface, wherein the maximum cross section of the mixture guidance channel does not exceed three times the cross section of the injection opening.