Open AccessThe Exhaust Emission Characteristics of a Spark-Ignition Engine Fuelled with Gasoline and Synthesized Biogas from Non-Thermal Plasma
Author(s) -
Marcus Lim,
Sureiyn Nimellnair al Vijayakumar,
Ridzwan Bin Tajol Aros
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/945/1/012025
Subject(s) - syngas , nonthermal plasma , biogas , waste management , ignition system , methane , gasoline , environmental science , spark ignition engine , flue gas , exhaust gas , syngas to gasoline plus , plasma , chemistry , hydrogen , engineering , hydrogen production , steam reforming , physics , organic chemistry , quantum mechanics , aerospace engineering
This study synthesizes biogas with low methane contents (<50%) to hydrocarbons that form a combustible synthesis gas (syngas) mixture. Conventional methods used for reforming biogas has limitations in terms of fabrication, maintenance, and cost. This is especially true when the biogas’ composition fluctuates. Non-thermal plasma (NTP) is an alternative method to produce combustible syngas for power generation. Thus, the exhaust emissions from a 2 kWe spark ignition (SI) engine fuelled with gasoline and NTP-synthesized biogas is investigated with respect to the type of NTP reactor, plasma power consumption and biogas composition. Two types of NTP reactors are used: a cylindrical reactor where the gas flow path is linear, and a cyclonic reactor where the gas flow path is a curvature, similar to that of a gas-solid cyclone separator. The results show that the NTP reactors produced additional hydrocarbons, decreasing flue gas temperatures by 4°C and reducing NO x emissions by 35%.