Experimental investigation on single cylinder four stroke tri-charged diesel engine using pyrolysis oil at different proportions

Abstract

Plastic waste is an absolute source of energy due to its high heating value and economy. It can be converted into oil by pyrolysis process and used in internal combustion engines as an alternative fuel. However, it emits significant-high emissions, challenging to operate the engine in a continuous regime. These problems can be resolved by increasing the intake density. The supercharger and turbocharger are the best options to increase the density of intake air. However, the turbocharger has a problem of turbo-lag, and the supercharger consumes engine output. Thus, in the present work, a tri-charged technology is implemented to avoid the problem of turbo-lag, power consumption, and reduction in emissions when operates at different blends of pyrolysis oil. Results showed that the tri-charged engine could run on plastic waste pyrolysis oil operate at full load capacity, presenting good performance compared with the conventional diesel engine. The best engine performance was found at PPO-20 in combination with tri-charged boosting. However, more percentage blending tends to increase the HC and CO emissions, with a fuel efficiency penalty. The result suggested that tri-charged technology is a promising technology and pyrolysis oil is an alternative fuel for specific engine applications at certain operating conditions.