Investigation of the effect of antioxidant on carbon deposition of compression ignition engine for carbon emissions reduction

Abstract

The study aimed to assess carbon deposition tendencies in mustard biodiesel with varying oxidation levels by examining residual carbon and existent gum content. Gas chromatography–mass spectrometry (GC-MS) and infrared spectrometry were used to analyze the chemical components of residual carbon and existent gum in mustard biodiesel and an antioxidant before and after oxidation. The research investigated carbon deposition on the exhaust valve of a compression ignition engine using mustard biodiesel blended with clove oil as an antioxidant. The engine ran for 100 h on each fuel sample: diesel (D100), biodiesel blended fuel (B30), and clove oil (3000 ppm). After completing 100 h on each sample, engine exhaust was analyzed for carbon deposition using Scanning Electron Microscopy (SEM) and Energy Dispersive Microscopy (EDX).The findings revealed increased carbon deposition when using biodiesel blended fuel compared to diesel fuel. However, the addition of an antioxidant to the biodiesel blend resulted in reduced carbon deposition. This suggests that the use of antioxidants effectively mitigated carbon buildup in the engine’s exhaust when using biodiesel blends. The aim of this study is to enhance engine performance, increase engine life, and reduce pollution in the environment.