Experimental Investigation of Tyre Pyrolysis Oil (TPO) in Diesel Engine without any Engine Modification

Abstract

In the current energy scenario, attention of world is changing towards producing energy from waste products. In the present study, tyre pyrolysis oil (TPO) is prepared and investigated in diesel engine. Initially, waste tyres were collected from local market, cut down into small pieces and steel wire meshes inside the tyre were removed. Then the pieces were heated at a high temperature. The last derived component after heating is called TPO. The minimal amount of black tyre powder which was also identified inside oil is removed by filtering process. The obtained TPO oil is mixed with traditional diesel fuel in the ratio of20% TPO and 80% diesel. Then the prepared samples were tested in computerised single-cylinder direct-injection diesel engine to analyse the combustion and performance characteristics. Emission measurements were done using AVL make: 444 Di Gas Analyser and 437C Smokemeter. The results show that brake thermal efficiency increased by about 0.6% and brake-specific energy consumption decreased by about 0.59 MJ kW h−1 with 20TPO than diesel fuel at full-load condition. The exhaust emission gases like CO, HC, NOx and smoke were decreased about 0.01%, 1 ppm, 119 ppm and 11.2 Hartridge smoke unit with 20TPO than neat diesel, respectively. The combustion characteristics like in-cylinder pressure, heat release rate and rate of pressure rise increased by about 0.92 bar, 6.88 J°CA−1 and 0.47 bar°CA−1 with 20TPO than diesel fuel. The prepared TPO may be used as an additive in diesel engine without any engine modification.