Comparison of heat flux sensors for internal combustion engines on two hot air gun test rigs and a test engine

Loading...
Thumbnail Image

Date

Authors

Cornelis, K.
Van Caelenberg, R.
Demuynck, J.
De Paepe, M.
Chana, S.
Verhelst, S.

Journal Title

Journal ISSN

Volume Title

Publisher

International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics

Abstract

Paper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.
The heat transfer that occurs in the cylinder of internal combustion engines has a great influence on the efficiency, power output and emissions. Development of a model that is able to predict the heat transfer is needed in order to be able to use simulations for optimization of these three properties. Prior to developing a model, the heat transfer phenomenon has to be thoroughly investigated by performing measurements inside an engine. This allows for a detailed understanding of the process and for a validation of model predictions. In previous works, a commercially available thermopile has been used to measure the heat transfer in a hydrogen combustion engine. The use of this sensor as a heat flux sensor has already been positively evaluated in a previous paper. Its dimensions, however, limit its usability for engine measurements, as it is too large to mount in production type engines. Therefore, a comparison with two alternative sensors was performed to select the best one for engine heat transfer research. Two variations of a calibration rig were used, one with a fast opening shutter and one with a chopper with adjustable speed. This paper presents a comparison of the rise time based on measurements on both test rigs. Furthermore, measurements were carried out on a test engine to evaluate the capability of the sensors to determine the heat transfer to the cylinder walls.

Description

Keywords

Internal combustion engines, Heat transfer in a hydrogen combustion engine, Engine heat transfer research, Heat flux sensors, Hot air gun test rigs

Sustainable Development Goals

Citation

Cornelis, K, Van Caelenberg, R, Demuynck, J, De Paepe, M, Chana, KS & Verhelst, S 2012, Comparison of heat flux sensors for internal combustion engines on two hot air gun test rigs and a test engine, Paper presented to the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.