Method of preparing an emulsion, a device for preparing said emulsion , and a vehicle

A method of preparing an emulsion comprising a first liquid and a second liquid, said method comprising the step of dispersing the first liquid into the second liquid, characterized in that the method comprises:

• passing the first liquid through an injection nozzle (108) for creating a spray of droplets of the first liquid, wherein
• the first liquid is injected in a container providing a free 10 path length for the spray from the nozzle that is larger than the penetration depth of the spray in the second liquid, and
• the injection of first liquid is done in more than one injection step;
• and
• injecting the first liquid in the form of the thus created droplets of first liquid into the second liquid such that Q,
• where Q is equal to the square of the speed of the droplets, the speed being the exit speed of the first liquid from the nozzle in air under standard temperature (20° C.) and ambient air pressure (1 atm),
• is at least 225 m2/s2;
• wherein W, where
• W is sg*Q*d divided by St with
• sg being the specific gravity of the first liquid in kg/m3;
• d being the mean Sauter droplet diameter in meter of the spray leaving the injection nozzle in air, and
• St is the surface tension of the first liquid in Newton/meter;
• is at least 250 kg /N*s2.