Internal combustion engine diagnostics using statistically processed Wiebe function

The aim of the article is to present concept an indirect diagnostic method using assessment variability amount released heat (mass fraction burn) and release rate. Wiebe function for has been used. parameters from course high-pressure indication in cylinder internal combustion engine linear regression have calculated. From a sufficiently large number measured samples, upper lower limits statistically determined. Lower characterize process not only terms quantity but also thus more complicated than one integral indicator, typically mean value heat. procedure enabling accurate estimation generation beginning shown. For engine, statistical test relative frequencies