Purifier of diesel particulates in exhaust gas

Details Purifier of diesel particulates in exhaust gas Purifier of diesel particulates in exhaust gas

1988-03-15

1989-06-20

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60288, 137597, 137876, F01N 302

Patent

active

048400289

ABSTRACT:
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.

REFERENCES:
patent: 4169491 (1979-10-01), Bajka
patent: 4372337 (1983-02-01), Holtzenberger
patent: 4373330 (1983-02-01), Stark
patent: 4381643 (1983-05-01), Stark
patent: 4566628 (1986-01-01), Latarius
Patent Abstracts of Japan, vol. 10, No. 29 (M-451) Feb. 5th, 1986.

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