Performance and emission properties of CI engine using blends of diesel and ۱-butanol

Marine diesel engines, which heavily rely on fossil fuels, release harmful emissions into the atmosphere. To reduce this, we need to find alternative fuels, either by developing new options that reduce emissions or by exploring biofuel alternatives for marine engines. The present study investigates the performance characteristics and emission profiles of a marine compression ignition (CI) engine. Experiments were conducted utilizing three distinct blends of pure diesel, BDB۵ (۹۵% diesel + ۵% ۱-butanol), and BDB۱۰ (۹۰% diesel + ۱۰% ۱-butanol), with their properties confirmed to be within the acceptable limits of American Society for Testing and Materials (ASTM) standards. Testing was performed on a dedicated compression ignition engine test apparatus under ۱۰۰% loading conditions, spanning an engine speed range from ۱۰۰۰ to ۳۲۰۰ rpm. The experimental result shows that the average decrease in the torque, brake power (BP) and exhaust gas temperature (EGT) is observed ۱.۲%, ۱.۳۵%, ۱.۳۳% for BDB۵, and ۶.۴%, ۶.۸۷%, ۲.۱۹% for BDB۱۰, respectively. The decrement in exhaust gasses like oxides of Nitrogen (NOx), carbon monoxide (CO) and Carbon dioxide (CO۲) is decreased by ۶.۹%, ۴.۷۹%, ۳.۶۵% for BDB۵ and ۱۱.۰۷%, ۶.۵۳%, ۷.۹۳% for BDB۱۰, respectively. A significant decrease ۱۸.۲۹% & ۳۲.۸۸% in smoke is noted for BDB۵ and BDB۱۰ fuel blends respectively when compared with pure diesel. An increment ۲.۱۴% (BDB۵) and ۸.۵۵% (BDB۱۰) is observed in brake-specific fuel consumption (BSFC). Despite the minor compromises, the substantial emission reductions offered by ۱-butanol/diesel blends indicate their strong potential as a cleaner alternative fuel for marine propulsion systems.

کلیدواژه ها:

Diesel ، emissions ، Performance ، ۱-Butanol ، Blends