초록 ▼

An exhaust gas filtering element is provided for filtering diesel particulates. The system comprises two filter elements disposed parallel to each other, a burner mechanism, and a four-way valve mechanism for switching over an exhaust gas flow and a preheated gas flow obtained by combustion in the b

An exhaust gas filtering element is provided for filtering diesel particulates. The system comprises two filter elements disposed parallel to each other, a burner mechanism, and a four-way valve mechanism for switching over an exhaust gas flow and a preheated gas flow obtained by combustion in the burner mechanism. The exhaust gas flow is generally passed uniformly through the two filter elements which filter off particulates. However, when regeneration is required, an ellipitical vane, provided in a cylinder of the four-way valve mechanism, is rotated so as to cut off the exhaust gas flow passing through one of the filter elements and cause the preheated gas to flow through this filter, whereby particulates are oxidized and incinerated. At this time, the exhaust gas flow is passed through the other filter element, without any particulates being emitted into the atmosphere. Then, the exhaust gas flow and the preheated gas flow are switched by rotating the vane so that the other filter element is regenerated.

대표청구항 ▼

An exhaust gas purifier system for connection to an exhaust pipe of a diesel engine for filtering off diesel particulates contained in exhaust gas and incinerating said particulates by means of an oil burner, comprising: a four-way valve having a cylindrically shaped body with two gas inlets and two

An exhaust gas purifier system for connection to an exhaust pipe of a diesel engine for filtering off diesel particulates contained in exhaust gas and incinerating said particulates by means of an oil burner, comprising: a four-way valve having a cylindrically shaped body with two gas inlets and two gas outlets, one of said inlets being connectable to the exhaust pipe of the diesel engine and the other of said inlets being connectable to a combustion chamber of the oil burner, said valve including a movable shaft disposed therein having an elliptical vane, attached to said shaft, in sliding contact with a portion of the inner surface of said body between said gas inlets, each of said gas outlets being located between said gas inlets and in said portion of the inner surface with which said elliptical vane is in sliding contact; two parallel filter elements made of ceramic; and means for connecting each of said filter elements to a corresponding one of said gas outlets.