Numerical investigation on backpressure developed in adsorbent chamber for emission reduction in diesel engine

Abstract

Diesel engine is a type of internal combustion engines, convert chemical energy contained in the fuel into mechanical power. Diesel fuel is a mixture of hydrocarbons its complete combustion leads to formation of Carbon dioxide and Water Molecules. The in complete combustion leads to various pollutants like hydrocarbon HC, carbon monoxide, smoke, nitrogen oxide NOX. These harmful pollutants effects both human begins and environment to a greater extent. In this present work an attempt was made to reduce the emission from the Twin cylinder direct injection diesel by using various physical adsorbents. Activated carbon and zeolite were used as physical adsorbents to reduce emission from the exhaust gas. The silencer of the vehicle will be replaced by a newly design silencer which is designed to place the physical adsorbents. Computational analysis was carried out to optimize the back pressure developed in the adsorbent chamber. The conical length of adsorbent chamber is varied of about 68mm,75mm and 85 mm at exhaust temperature conditions 220 °C,300 °C and 350 °C respectively. The results obtained conveys that adsorbent chamber with 85mm convergence length has shown acceptable pressure drop.