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Modern automotive industry promotes the tendency of increasing the performance of the engine along with decreasing its size. This approach allows to extend the application area of one engine design. However, downsizing results in decrease of combustion chamber volume and at the same time shortening the available distance for fuel to evaporate. Beside achieving more power, lower fuel consumption and lower emissions due to more and more restrictive limits. Thus, the processes of fuel mixing and combustion have to be well designed. In order to achieve required evaporation rates, liquid fuel has to be properly dispersed. One of possible solutions of generating well dispersed spray in the future is flash boiling. Injecting liquid fuel in superheated state can lead to shorter spray penetration and wider spray angle. Additionally, the process is rapid what provides better droplet distribution. However, this phenomenon still has to be better understood. This study contains experimental investigation into spray characteristics of liquid hydrocarbon fuels under high pressure conditions. Mie scattering technique was used to determine global spray parameters. Measurements were carried out for different ambient pressures. Acquired images were processed using DaVis v.8.4 software. Spray penetration and spray angle were determined. Results showed that increasing superheat degree has influence on both spray penetration and spray angle.