Investigation on the behaviour of a DI diesel engine fueled with Jatropha Methyl Ester (JME) and Tyre Pyrolysis Oil (TPO) blends

Abstract

Early investigation on the use of tyre pyrolysis oil (TPO) on the blended with diesel at 10 to 90% exhibited longer ignition, as a result of lower cetane number of TPO, as well as the blends. In experimental investigation TPO was blended with Jaropha methyl ester (JME) , whose cetane number is higher than diesel fuel, was used as alternative fuel in a single cylinder, four stroke, air cooled, direct injection (DI) diesel engine developing 4.4kW. Five different blends varying TPO from 10 to 50% at step of 10% on volume basis were considered for investigation. Interestingly the combustion and emission behaviour of the engine deviated after 20% TPO in blend. There was a reduction in the efficiency with 30, 40 and 50% TPO in the blend at full load. The combustion, performance, emission behaviour of the engine fueled with JMETPO blend are compared with diesel and JME operation is presented in this paper.