US4944153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner for hard-to-ignite mixtures
Assignee: Webasto SE
•
Filing: 1988-08-23
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Granted: 1990-07-31
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Expires: 2008-08-23
Abstract
Abstract A burner for hard-to-ignite mixtures, such as with exhaust gases of an internal combustion engine, in which an ignitable mixture is prepared in a locally limited area for producing an ignition flame that is then used for igniting the hard-to-ignite mixture. According to one embodiment, the burner has an auxiliary ignition burner that is integrated into the actual burner and that is operated with compressed air, which is delivered either by a vehicle compressed air system or by a separately provided air compressor. In an alternative embodiment, air is fed in, additionally, by an air injection device to an outlet area of the fuel nozzle and in the vicinity of the ignition device to prepare an extremely ignitable mixture in this area, which is used to generate an ignition flame. The air injection device can be supplied with compressed air in the same manner as for the auxiliary ignition burner in the first embodiment. Alternatively, ambient air with sufficient oxygen content can be fed in through the air injection device.
Inventors
- 👤 Dieter Goerlich
- 👤 Rainer Kolodzie
- 👤 Rainer Reiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:57
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/42; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/023; F01N3/025; F23Q; F23Q9/00; F23Q9/02; F23Q9/04; F23Q9/045
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
87 words
Burner for a hard-to-ignite mixture, such as exhaust gases of an internal combustion engine, comprising a main burner to which only fuel is supplied to the mixture and an ignition means for providing sufficient energy for ignition of the main burner; wherein said ignition means comprises an air supply device for creation of a local zone of an easy-to-combust mixture and an ignition device for producing a flame therefrom, and control means for turning off said air supply device once ignition of said main burner is achieved.
Claim 2
Dependent Claim
87 words
Burner for a hard-to-ignite mixture, such as exhaust gases of an internal combustion engine, comprising a main burner to which only fuel is supplied to the mixture and an ignition means for providing sufficient energy for ignition of the main burner; wherein said ignition means comprises an air supply device for creation of a local zone of an easy-to-combust mixture and an ignition device for producing a flame therefrom, and control means for turning off said air supply device once ignition of said main burner is achieved.
Claim 3
Dependent Claim
28 words
Burner according to claim 1, wherein said ignition means is an auxiliary ignition burner which is integrated into a unit with a main burner for the hard-to-ignite mixture.
Claim 4
Dependent Claim
27 words
Burner according to claim 2, wherein the air supply device comprises a means for delivering air from a vehicle compressed air system to said auxiliary ignition burner.
Claim 5
Dependent Claim
26 words
Burner according to claim 2, wherein said air supply device comprises a means for delivering air from a separate air compressor to said auxiliary ignition burner.
Claim 6
Dependent Claim
40 words
Burner according to claim 1, wherein said main burner and said ignition means are integrated into a unit having a housing in the form of a segment of an exhaust pipe for an exhaust line of an integral combustion engine.
Claim 7
Dependent Claim
39 words
Burner according to claim 1, said air supply device comprises an air injection device having an air outlet disposed in an outlet area of a fuel nozzle of said main burner that is in proximity to said ignition device.
Claim 8
Dependent Claim
35 words
Burner according to claim 6, wherein said air injection device is constructed for supplying air to the outlet area of the fuel nozzle in at least one of tangential, radial, axial, and annular jet forms.
Claim 9
Dependent Claim
22 words
Burner according to claim 7, wherein a compressed air supply device is provided for delivering compressed air to said air injection device.
Claim 10
Dependent Claim
27 words
Burner according to claim 8, wherein the compressed air supply device comprises means for delivering air to the air injection device from a vehicle compressed air system.
Claim 11
Dependent Claim
25 words
Burner according to claim 8, wherein the compressed air supply device comprises a separate air compressor for delivering compressed air to said air injection device.
Claim 12
Dependent Claim
38 words
Burner according to claim 6, wherein said main burner and said ignition means are combined into a unit having a housing in the form of an exhaust pipe segment for an exhaust line of an internal combustion engine.
References Cited (Backward Citations)
US1839880A
Cited
US2385833A
Cited
US4450682A
Cited
DE3145028A1
Cited
US4571938A
Cited
US4662172A
Cited
US4520624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |