Abstract
We are developing a heat flux sensing method with a MEMS technology on an interior wall of a gasoline engine to reveal heat transfer mechanism and mitigate heat loss. The transient heat conduction method is used to derive the wall heat flux from measured wall surface temperature by a thin film resistance sensor. Here, it is critical to use right values of structure and thermal properties of the sensor in the analysis. The aim of the study is to calibrate the MEMS sensor and the heat conduction model. The calibration of the heat flux measurement system was conducted by deciding the thermal model through comparing given heat flux to the resistance sensor and derived heat flux from the measured resistance temperature. Good agreement between the self-heating and measured heat flux was attempted in a wide frequency and amplitude ranges.
