Patent ID: 6151890
Filing Date: 2000-11-28
Classification: F01N,Y02T

Abstract:
An exhaust gas purifying apparatus for an internal combustion engine, comprising:a plurality of exhaust passages connected to a multi-cylinder internal combustion engine;a joint exhaust passage formed by merging said exhaust passages;exhaust gas purifying means for purifying exhaust gas that flows through said joint exhaust passage;adsorption/desorption means provided in each of said exhaust passages for adsorbing an unburnt gas component contained in the exhaust gas that flows through each of said exhaust passages at a temperature lower than a predetermined temperature and for desorbing the adsorbed unburnt gas component at a temperature equal to or higher than the predetermined temperature; anddesorption/adjustment means for differentiating timings for the unburnt gas components, which have been desorbed from the respective adsorption/desorption means, to enter into the exhaust gas purifying means, wherein said desorption/adjustment means differentiates timings of each of said adsorption/desorption means to desorb the unburnt gas components therefrom.