Method and assembly for measuring a gas temperature distribution in a combustion chamber

Abstract

An optical sensor (C) directed into a combustion chamber (BK) is used to selectively sense a predefined spectral range of an optical spectrum for different light paths (LW) running through the combustion chamber (BK) to measure a gas temperature distribution in the combustion chamber (BK). A spectral intensity (SI) is determined for each spectral range and associated with an item of light path information (LA) which identifies the light path (LW) in question. The spectral intensities (SI) determined and the associated items of light path information (LA) are fed as input data to a machine learning routine (NN) which is trained to reproduce spatially resolved training temperature distributions (TTD). Output data from the machine learning routine (NN) are then output as the gas temperature distribution (GTD).

Description

technical field [0001] In combustion chambers, in particular of internal combustion engines, the combustion process often takes place at very high temperatures, pressures and / or flow velocities. In gas turbines, for example, temperatures of about 1300-2000° C., pressures of about 15-25 bar and flow velocities of about 300 m / s occur. In order to optimize the construction and operation of the internal combustion engine, in particular with regard to its efficiency, exhaust gas emissions and / or wear, it is extremely advantageous to detect and evaluate information about the temperature distribution in the combustion chamber. If it happens that local temperature peaks frequently lead to higher NOx emissions and higher wear, it is extremely advantageous here not only to detect the temperature mean value, but also in particular to detect inhomogeneities or inhomogeneous distributions of the gas temperature measure. Background technique [0002] Under the aforementioned physical am...

AI Technical Summary

Problems solved by technology

Although estimates of the temperature distribution in the combustion chamber can often be obtained from these averages with the aid of a thermodynamic model of the internal combustion engine, these estimates often only reflect a model structure

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