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In small high speed direct injection diesel engines the injected fuel spray impinges on the walls of the piston bowl. The mixture formation process is influenced considerably by the spray-wall interaction. Stringent exhaust gas emission regulations and growing demands for fuel economy are leading to the application of high-pressure fuel injection systems, e.g. common-rail. The trend towards downsized engines with smaller piston displacements leads to reduced distances between nozzle and wall. Higher injection pressures and smaller nozzle-wall distances both increase the significance of spray-wall interaction and near-wall mixture formation. In the present study the influence of governing parameters like injection pressure and wall temperature on the characteristics of the impinged spray was investigated.