Patent ID: 6334306
Filing Date: 2002-01-01
Classification: B01D,F01N,Y02T

Abstract:
An exhaust gas purification apparatus in a multi-cylinder combustion engine, comprising:an exhaust manifold to merge exhaust gas discharged from each cylinder such that the respective exhaust gas discharged from each cylinder meets at a merging point in the exhaust manifold; a hydrocarbon adsorbent that adsorbs hydrocarbon at a lower temperature and desorbs hydrocarbon at a higher temperature, disposed in the exhaust manifold; and a catalytic converter disposed in the exhaust manifold at a position upstream from the hydrocarbon adsorbent that purifies hydrocarbon wherein the catalytic converter and the hydrocarbon adsorbent being arranged adjacent to each other in series immediately downstream of the merging point at a distance whereby the hydrocarbons desorbed from the hydrocarbon absorbent flow backward in the direction of the catalytic converter by a pulsing stream of the exhaust gas.