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    Prediction of technical state of petrol equipments (thermic motor case)
    (Maltepe Üniversitesi, 2009) Meglouli, H.; F. Ait Hocine, E. Bouali
    The improvement of the exploitation accuracy of petrol equipments is possible by the prediction of their technical state, this operation can insure their rational use, and permit to avoid unexpected damages of the equipments by enlarging in one hand the average time between the reparation that is reduced by consequence the time and the volumes of the reparations. In the resolution of the prediction problem of parameters variations which characterize the state of entities functioning of petrol equipments in time. We determine the mutual relation between future gaps of parameters and retrospective values. The observation, of parameters variations characterising petrol equipments state, shows that they are uncertain functions. The knowledge of distribution laws of these uncertain functions is not enough and it must know also the uncertain functions values for some values of time argument. The distribution laws present a certain difficulty for speaking. For this we use for the uncertain processes description, their moments to be known: Mathematical expectation, the variety, the moments of correlation. As a particular case of study, we consider diesel motors. A lot of parameters characteterize the state of entities and their functioning of diesel motors, they are function of work time. We consider particularly the value and the uniformity of the flow of pump motor-fuel at high pressure of the system (motor diesel).These letters vary in the time according to the variation of temperature conditions or of usury of mechanical pieces, and cinematical couples that constitute the pump.