US5082478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate trap filter regenerative system
Assignee: Kyocera Corp
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Filing: 1990-10-03
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Granted: 1992-01-21
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Expires: 2010-10-03
Abstract
Abstract A particulate trap filter regenerative system for eliminating the fullness of particulates to a particulate trap filter, which collects particulates in the exhaust gas of diesel engines and the like, by burning off the particulates causing the loading with the flame injected from a burner disposed on the upper flow side of the filter, wherein the burner is installed in such a way that the flame injection axis thereof crosses with the extension line of the axis of the particulate trap filter at an angle of 35 to 55 degrees and a flame distributor provided with plural through holes is disposed in such a way that it crosses with the extension line of the axis of the particulate trap filter at an angle which is greater by 10 to 20 degrees than the flame injection angle of the burner. A honeycomb disc body made of ceramics may be installed between the flame distributor and the particulate trap filter.
Inventors
- 👤 Michio Oono
- 👤 Meiro Nagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:13
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/023; F01N3/025; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10S; Y10S55/00; Y10S55/10; Y10S55/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
183 words
An exhaust gas particulate trap filter regenerative system comprising: a cylindrical housing disposed in an exhaust pipe; a particulate trap filter housed in the housing for collecting particulates of exhaust gas therein and having an upper flow side and a lower flow side, and a longitudinal axis; and a burner disposed on the upper flow side of the filter for injecting a flame into the filter and burning off the particulates collected; said particulate trap filter regenerative system being characterized in that said system further comprises a flame distributor provided with plural through holes between the particulate trap filter and the burner, and that the burner is installed in such a way that the flame injection axis thereof crosses with the extension line of the axis of the particulate trap filter at an angle of 35 to 55 degrees and said flame distributor is disposed in such a way that it crosses with the extension line of the axis of the particulate trap filter at an angle which is greater by 10 to 20 degrees than the flame injection angle of the burner.
Claim 2
Dependent Claim
183 words
An exhaust gas particulate trap filter regenerative system comprising: a cylindrical housing disposed in an exhaust pipe; a particulate trap filter housed in the housing for collecting particulates of exhaust gas therein and having an upper flow side and a lower flow side, and a longitudinal axis; and a burner disposed on the upper flow side of the filter for injecting a flame into the filter and burning off the particulates collected; said particulate trap filter regenerative system being characterized in that said system further comprises a flame distributor provided with plural through holes between the particulate trap filter and the burner, and that the burner is installed in such a way that the flame injection axis thereof crosses with the extension line of the axis of the particulate trap filter at an angle of 35 to 55 degrees and said flame distributor is disposed in such a way that it crosses with the extension line of the axis of the particulate trap filter at an angle which is greater by 10 to 20 degrees than the flame injection angle of the burner.
Claim 3
Dependent Claim
40 words
A particulate trap filter regenerative system according to claim 1 wherein the particulate trap filter regenerative system further comprises a ceramic honeycomb disc body between the particulate trap filter and said flame distributor immediately after the lower flow side thereof.
Claim 4
Dependent Claim
39 words
A particulate trap filter regenerative system according to claim 2 wherein said ceramic honeycomb disc body is made of sintered ceramics selected from cordierite (2MgO.2Al 2 O 3 .5SiO 2 ) and silicon nitride (Si 3 N 4 ).
Claim 5
Dependent Claim
39 words
A particulate trap filter regenerative system according to claim 1 or claim 2 wherein said flame distributor is provided with a plurality of parallel fins on the surface of the flame distributor to which the flame is directly applied.
Claim 6
Dependent Claim
54 words
A particulate trap filter regenerative system according to claim 1 or claim 2 wherein said flame distributor is made of sintered ceramics selected from silicon nitride (Si 3 N 4 ), silicon carbide (SiC), cordierite (2MgO.2Al 2 O 3 .5SiO 2 ) and mullite (3Al 2 O 3 .2SiO 2 ) or heat-resistive alloy.
Claim 7
Dependent Claim
17 words
A particulate trap filter regenerative system according to claim 5, wherein said heat-resistive alloy includes stainless steel.
Claim 8
Dependent Claim
56 words
A particulate trap filter regenerative system according to claim 1 wherein said plural through holes provided in said flame distributor are about 3 to about 10 mm, in diameter, and the total area of openings occupied by the through holes is within the range of 25 to 35% of the surface area of said flame distributor.
Claim 9
Dependent Claim
25 words
A particulate trap filter regenerative system according to claim 7, wherein the plural through holes in said flame distributor are about 5.5 mm in diameter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-20 | 1995-07-22 | 1996-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-20 | 1999-07-22 | 2000-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-20 | 2003-07-22 | 2004-01-21 | $7700.00 | Window Closed / Lapsed |