Experimental Investigations on VCR Engine of Oils Derived from Waste Plastics and Algae from Oceans Blended with Diesel for Marine Engine Applications

A Dixit; R Chaudhary

doi:10.5750/ijme.v168iA4(S).1853

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Published: Oct 10, 2026

DOI: https://doi.org/10.5750/ijme.v168iA4(S).1853

Keywords:

Algae oil Waste plastic oil Marine diesel engines Emission reduction Rustainable biofuels Maritime energy source

A Dixit

Department of Mechanical Engineering, Delhi Technological University (DTU) Delhi, India, ABES Engineering College, Ghaziabad, Uttar Pradesh, India

R Chaudhary

Department of Mechanical Engineering, Delhi Technological University (DTU) Delhi, India

Abstract

The rising concerns for environmental crisis from non-biodegradable and single use plastic waste accumulation in oceans and large water bodies requires immediate sustainable solution. There is also a need to reduce maritime emissions by opting novel sustainable fuels obtained near the source. This investigation presents a comprehensive study on emission and performance characteristics of blends of oils derived from waste plastic and waste algae accumulated in oceans, mixed with diesel fuel. The blended fuel is formed through transesterification of waste algae and pyrolysis of waste plastic for the use in diesel engines of marine applications. Experimental runs were conducted on a variable compression ratio, singlecylinder research diesel engine operated at varied load. Four blends in specific ratios were tested along with neat diesel at varying compression ratio ranging 16 to 20 with engine loading from 20% to 100% of maximum load availability. The results demonstrated that higher blending ratio of these waste oils with diesel can be done at higher compression ratios by only 1.45% compromise in brake thermal efficiency, while significantly reducing the emissions. The research findings establish the environmental and technical viability of ocean waste-derived oils as diesel blended drop-in fuel for maritime applications.

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Vol. 168 No. A4(S) (2026): Special Issue: International Conference of Advance Research and Innovation

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