Engine's behavior on hydrogen addition of waste cooking oil fueled light duty diesel engine - A dual fuel approach. (1st March 2020)

• Record Type: Journal Article
• Authors: Raju, Pradeep; Masimalai, Senthil Kumar; Ganesan, Nataraj; Karthic, S.V.
• Is Part Of: Energy. Volume 194(2020)
• Publication Date: 2020-03-01
• Subjects: Waste cooking oil -- Hydrogen fuel -- Dual fuel engine -- Exhaust emissions; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2019.116844
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: Foremost aim of this work is to study the influence of hydrogen induction on tail pipe exhaust emissions of a compression ignition engine fueled with waste cooking oil biodiesel (WCOB). Waste cooking oil biodiesel was mixed with mineral diesel fuel by a volume fraction of 50% (WCOB50). In addition to this pure hydrogen was inducted into the intake along with air at the volume flow rate of 2, 4 and 6 lpm. The test was conducted in a single cylinder agricultural based direct injection light duty diesel engine at various load conditions. At first, test results were correlated with neat diesel fuel and WCOB50 fuel at all loads. WCOB50 fuel indicates an insignificant reduction in BTE when compared to neat diesel fuel. Emission study revealed that WCOB50 usage moderately increases NOx emission and depreciates CO, HC and smoke opacity. However, hydrogen enrichment significantly decreased exhaust emissions such as smoke opacity, HC and CO except for NOx emission. Also, the BTE of the engine gradually improved with the increasing volume flow rate of hydrogen in the intake. At maximum power output in cylinder pressure and heat release rate were found to be higher for maximum hydrogen flow rate. Highlights: Waste cooking oil biodiesel with hydrogen, is fueled in a dual fuel engine. WCOB50 fuel revealed decrease in BTE, when distinguished with diesel fuel. Performance of the engine powered with WCOB was found increased under hydrogen based dual fuel mode. Smoke opacity was reduced under dual fuel mode. Less CO and HC emissions were observed under hydrogen based dual fuel mode.