Considering the escalating cost of fossil fuels in correlation with the growing influence of sustainability, the need to seek new alternative fuels is increasing rapidly. This movement has lead researchers to look beyond the usual alternative fuels and focus on plastics as an energy resource in the form of a low density polyethylene (LDPE) used throughout the global community. The authors investigated the injection and combustion of a new class of polymer fuel containing 5% LDPE by weight in a heavy fuel oil (AHFO) in a direct injection diesel engine, in order to evaluate its effectiveness for application as a new alternative fuel. The analysis occurred at 1200 rpm, under loads that ranged from BMEP 1.4-6.04 bar. In order to maintain the fuel’s viscosity around 20 cSt the fuel was heated at 130-150 °C. The smoke (bosch) and emission analysis were also performed and provided promising results in terms of engine performance. This suggests that the feedstock of LDPE may be a viable substitute for AHFO for application in a diesel engine with the addressing of the technical challenges associated with the injection system operation.

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