The computer simulation of the Common Rail accumulator fuel-injection system was carried out. The computer\nsimulation enables the observation of the phenomena from rail pressure, which is input data for injection parameters\ncalculation, to the injection rate. By means of computer simulation, the pressure values in specific sections of the\ninjection nozzle may be computed, the needle lift, injection rate, total injected fuel, time lag from injector current to\nfirst evidence of injection process and others time lags between various phases of injection process.\nMeasurements of injection and combustion were carried out in a transparent research engine. This engine is a single cylinder\ntransparent engine based on the AUDI V6 engine, equipped with a Bosch Common Rail Injection System.\nThe optical part of the experimental setup contains two different lasers, while the camera system allows for\nsimultaneously detecting 4 signals: the Mie scattering of the injected fuel, the laser-induced fluorescence (LIF) of fuel\nand vapour, light emissions from the flame indicating the premixed combustion mode, and flame emissions indicating\nthe diffusion mode.\nThe comparison of the computed and measured injection parameters showed good matching.
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