F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
172/3
F01N 3/02 (2006.01) F01N 3/025 (2006.01) F01N 3/032 (2006.01) F16K 11/085 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1308361
ABSTRACT Provided is a regeneration system of an exhaust gas filtering element for diesel particulates. The system comprises two filter elements provided in parallel with 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 elliptical 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 pre- heated gas flow are switched by rotating the vane so that the other filter element is regenerated.
561559
Kusuda Takao
Mihara Toshihiro
Shimoda Hisanori
Takigawa Masuo
Yonemura Masaaki
Marks & Clerk
Matsushita Electric Industrial Co. Ltd.
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