Exhaust gas purifying apparatus for an internal combustion engin

Details Exhaust gas purifying apparatus for an internal combustion engin Exhaust gas purifying apparatus for an internal combustion engin

1998-04-22

2000-11-28

Denion, Thomas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60295, 60285, 60286, 60289, 60303, F01N 300

Patent

active

061518905

ABSTRACT:
An unburnt gas component such as unburned hydrocarbon (HC) discharged from an internal combustion engine irrespective of an amount of exhaust gas is purified without fail. The unburnt gas component is prevented from being discharged into the atmosphere. In order to attain this, an exhaust gas purifying apparatus for an internal combustion engine according to the present invention is provided with a plurality of exhaust passages connected to the internal combustion engine; a joint exhaust passage formed by merging the exhaust passages; an exhaust gas purifying unit for purifying the exhaust gas that flows through the joint exhaust passage; an adsorption/desorption unit provided in each of the exhaust passages for adsorbing an unburnt gas component contained in the exhaust gas that flows through each of the 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; and a desorption/adjustment unit for differentiating timings for desorbing the unburnt gas component by the adsorption/desorption unit.

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patent: 5657625 (1997-08-01), Koga et al.
patent: 5758493 (1998-06-01), Asik et al.
patent: 5802845 (1998-09-01), Abe et al.

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