A Method for Measuring the Gas Temperature in a Cylinder of Internal Combustion Engine Using a Cold-wire : Examination of a Method by Numerical Analysis

Abstract

In order to measure the gas temperature Tg in a cylinder of internal combustion engine in motoring operation using a cold-wire, a method by the numerical analysis of the heat -equilibrium equation for cold-wire was examined. It was found that Tg was able to be determined from the axial mean temperature Tmc of cold-wire by this method for known gas velocity U. For unknown U, Tg and U were able to be determined by solving the simultaneous heat-equilibrium equations for a cold-wire and a hot-wire.