Preliminary Study on Emission Reduction in Diesel Engine Using Hydrogen

¹ University of Indonesia, Faculty of Engineering, Department of Mechanical Engineering, Depok, Indonesia
² PT. Pertamina Hulu Energi OSES, Production & Operation Department, Jakarta, Indonesia
³ Badan Riset dan Inovasi Nasional (BRIN), Serpong, Tangerang, Indonesia

^* Corresponding author: riko.meidiya@ui.ac.id

Abstract

This research examines the influence of biodiesel blended with hydrogen on emissions. Minimization of emissions in a single-cylinder diesel engine. The Diesel Dual-Fuel (DDF) system employed in this study introduced hydrogen via the intake manifold, while biodiesel, sourced from crude palm oil (CPO), was delivered directly into the combustion chamber. The investigation focused on measuring critical emissions carbon dioxide (CO₂). The results demonstrated that hydrogen addition significantly lowered CO₂ emissions, contributing to cleaner engine operations. However, NOₓ emissions increased due to higher combustion temperatures, emphasizing the need for further optimization of injection timing and hydrogen flow regulation. Despite the challenges related to NOₓ emissions, hydrogen supplementation improved thermal efficiency and reduced biodiesel consumption, showing promise for sustainable engine use. This research provides insights into balancing emission reduction and engine performance, with suggestions for further optimization.