Effect of radial jets in exhaust system of spark ignition engine – Exergy analysis

Abstract

This research has examined the effect of radial air injectors on the theoretical exergy of an exhaust system in a Spark Ignition (SI) engine. The radial air injectors have been installed in three different positions along the silencer’s bend pipe. Exergy analysis has determined the amount of irreversibility in a process, and its quality, associated with the thermodynamic efficiency of work output. The results of the study have indicated that system efficiency has increased when using radial air injectors. The measurement of exergy destruction with 8 radial jets present has been 0.1679 kWh. With 16 jets, this value has risen to 0.2019 kWh and has increased further to 0.23 kWh with 24 jets. The results of the experiments have been analyzed, and it can be concluded that increasing the quantity of radial jets has had an effect on a system’s exergy performance. These results have provided evidence for the advantage of employing radial air injectors in exhaust systems of SI engines to make them more efficient and to decrease their negative environmental effects.