Green vehicles associated with modern exhaust after-treatment technologies

Abstract

Internal combustion engine-powered automobiles are significant sources of carbon dioxide (CO₂) and toxic components such as carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), aldehydes, and particulate matter (PM). Many countries around the world have adopted increasingly stringent standards to limit these harmful emissions. In order to meet these standards and work towards environmental protection, modern vehicles have implemented various technologies to significantly reduce engine emissions. These technologies can be categorized into three main groups: engine structure, fuel usage, and exhaust gas aftertreatment. This article focused on the exhaust gas aftertreatment technologies used in modern automobiles, as well as research on exhaust gas aftertreatment systems in Vietnam.