Thermography for Performance Optimisation of Spark-ignition Engine due to Soot Formation in Exhaust Pipe
The usage of thermography as an effective condition monitoring tool for performance evaluation on spark-ignition engine has been discussed. The technique allows for the monitoring of temperatures and thermal patterns while the equipment are running under loaded condition. The experiments have been conducted on petrol engine to acquire thermographs of the exhaust pipe under different loads with different diameters of the exhaust pipe to provide condition for soot formation. The heat transfer analysis was carried out using properties of CO2 for three different flow areas by inserting metallic tubes of known thickness in the exhaust pipe. The paper emphasises that soot formation will reduce the flow area which will result in increase in the surface temperature and the thickness of soot layer can be further correlated with the running performance of the engine.
Defence Science Journal, 2011, 61(1), pp.12-18, DOI:http://dx.doi.org/10.14429/dsj.61.163
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