US5207185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emissions reduction system for internal combustion engines
Assignee: SARTAM INDUSTRIES Inc
•
Filing: 1992-03-27
•
Granted: 1993-05-04
•
Expires: 2012-03-27
Abstract
Abstract Apparatus is disclosed herein for reducing engine nitrogen oxide emissions by mixing hydrogen prepared from a portion of engine fuel within a simple burner. The apparatus includes a burner having an internal combustion chamber for receiving either a portion of gaseous fuel or liquid fuel for mixture with air and subsequent ignition by a spark plug. A mixing chamber is included having a series of baffles against which injected air and fuel vapor impinge causing thorough and complete air/fuel blending into a mixture subsequently ignited and burned, and then discharged into the combustion chamber of the engine itself.
Inventors
- 👤 Leonard Greiner
- 👤 David M. Moard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:10
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/36; C01B3/363; F; F02; F02B; F02B43/00; F02B43/10; F02M; F02M25/00; F02M25/10; F02M25/12; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/30; Y10; Y10S; Y10S123/00; Y10S123/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
158 words
In an internal combustion apparatus, the improvement which comprises: a burner means for combusting air and hydrocarbons at fuel-rich stoichiometric air/fuel ratios from 0.3 to 1 to provide air/fuel vapors; and said burner means includes a mixer means intimately combining said air/fuel vapors for injection into said internal combustion apparatus; means for preventing flame flash back into said air/fuel mixer means; said burner includes a combustion chamber having an inlet means for receiving separate supply of fuel and air; and said mixer means includes a baffle assembly disposed in said burner means combustion chamber for receiving said combined air/fuel supply in forced impingement relationship to create a mixed vapor; said baffle assembly includes a cup-like member having a wall adapted to interfere with flow of said combined air/fuel mixture to blend said mixture and redirect the flow; and said burner means having a back wall for receiving said redirected mixture flow adapted to further blend said air/fuel mixture.
Claim 2
Dependent Claim
158 words
In an internal combustion apparatus, the improvement which comprises: a burner means for combusting air and hydrocarbons at fuel-rich stoichiometric air/fuel ratios from 0.3 to 1 to provide air/fuel vapors; and said burner means includes a mixer means intimately combining said air/fuel vapors for injection into said internal combustion apparatus; means for preventing flame flash back into said air/fuel mixer means; said burner includes a combustion chamber having an inlet means for receiving separate supply of fuel and air; and said mixer means includes a baffle assembly disposed in said burner means combustion chamber for receiving said combined air/fuel supply in forced impingement relationship to create a mixed vapor; said baffle assembly includes a cup-like member having a wall adapted to interfere with flow of said combined air/fuel mixture to blend said mixture and redirect the flow; and said burner means having a back wall for receiving said redirected mixture flow adapted to further blend said air/fuel mixture.
Claim 3
Dependent Claim
64 words
The invention as defined in claim 1 wherein: said baffle assembly includes spaced-apart walls having a first wall adapted to receive impinging blended main fuel portion and air portion to provide flow reversal to a second wall spaced from said first wall operable to receive and redirect said blended main fuel portion and air portion to produce a thorough mixture of said fuel/air flow.
Claim 4
Dependent Claim
19 words
The invention as defined in claim 2 wherein: said inlet means is connected to a source of gaseous fuel.
Claim 5
Dependent Claim
26 words
The invention as defined in claim 1 including: said burner means having an ignition means adjacent to said mixer means for selectively igniting said air/fuel mixture.
Claim 6
Dependent Claim
34 words
The invention as defined in claim 1 including: heat exchanger means disposed in said burner means combustion chamber for vaporizing liquid fuel; a source of liquid fuel operably connected to said heat exchanger means.
Claim 7
Dependent Claim
161 words
Apparatus for reducing nitrogen oxide contaminants emitted from an internal combustion power source comprising: a main fuel supply; an air supply; a burner means operably coupled to said fuel supply and said air supply for receiving a portion of said main fuel and air commingled within said burner means; mixer means carried in said burner for thoroughly combining said fuel and said air together to form a blend; ignition means secured to said burner means for igniting said fuel/air blend for discharge into said internal combustion power source; said mixer means includes spaced-apart walls having a first wall adapted to receive said blended main fuel portion and said air portion to provide flow reversal to a second wall for receiving and redirecting said blended main fuel portion and said air portion to produce a thorough mixture of said fuel/air flow; a source of liquid fuel; and heat exchanger means disposed in said burner means for receiving and vaporizing said liquid fuel.
Claim 8
Dependent Claim
161 words
Apparatus for reducing nitrogen oxide contaminants emitted from an internal combustion power source comprising: a main fuel supply; an air supply; a burner means operably coupled to said fuel supply and said air supply for receiving a portion of said main fuel and air commingled within said burner means; mixer means carried in said burner for thoroughly combining said fuel and said air together to form a blend; ignition means secured to said burner means for igniting said fuel/air blend for discharge into said internal combustion power source; said mixer means includes spaced-apart walls having a first wall adapted to receive said blended main fuel portion and said air portion to provide flow reversal to a second wall for receiving and redirecting said blended main fuel portion and said air portion to produce a thorough mixture of said fuel/air flow; a source of liquid fuel; and heat exchanger means disposed in said burner means for receiving and vaporizing said liquid fuel.
Claim 9
Dependent Claim
24 words
The invention as defined in claim 6 including: means in said burner means to prevent ignition of said air/fuel mixture in said mixer means.
Claim 10
Dependent Claim
24 words
The invention as defined in claim 6 including: means in said mixer means for inducing sudden right angle flow reversals of said fuel/air mixture.
Claim 11
Dependent Claim
159 words
Apparatus for reducing nitrogen oxide contaminants emitted from an internal combustion power source comprising: a main fuel supply; an air supply; a burner means operably coupled to said fuel supply and said air supply for receiving a portion of said main fuel and air commingled within said burner means; mixer means carried in said burner for thoroughly combining said fuel and said air together to form a blend; a baffle assembly included in said mixer means having a wall adapted to interfere with flow of said combined air/fuel mixture to blend said mixture and redirect the flow to said burner means; and said burner means having a back wall for receiving said redirected flow to further blend said air/fuel mixture; said burner means having a back wall for receiving said redirected flow to further blend said air/fuel mixture; and ignition means secured to said burner means for igniting said fuel/air blend for discharge into said internal combustion power source.
Claim 12
Dependent Claim
159 words
Apparatus for reducing nitrogen oxide contaminants emitted from an internal combustion power source comprising: a main fuel supply; an air supply; a burner means operably coupled to said fuel supply and said air supply for receiving a portion of said main fuel and air commingled within said burner means; mixer means carried in said burner for thoroughly combining said fuel and said air together to form a blend; a baffle assembly included in said mixer means having a wall adapted to interfere with flow of said combined air/fuel mixture to blend said mixture and redirect the flow to said burner means; and said burner means having a back wall for receiving said redirected flow to further blend said air/fuel mixture; said burner means having a back wall for receiving said redirected flow to further blend said air/fuel mixture; and ignition means secured to said burner means for igniting said fuel/air blend for discharge into said internal combustion power source.
Claim 13
Independent Claim
142 words
A method of reducing NOx contaminants in an internal combustion power source comprising the steps of: withdrawing a portion of fuel from a main fuel source; introducing a quantity of air with said portion of fuel to produce an air/fuel flow; conducting said air/fuel flow into a mixing assembly by forcibly urging said air/fuel flow into engagement with walls causing flow reversal and thorough mixing of air and fuel to produce a combustible vapor; igniting said combustible vapor in a burner chamber to produce combustion products; exhausting said combustion products from the burner into the combustion power source for mixing with main fuel; introducing air and fuel portion vapors into the mixing assembly for pre-heating wherein said vapors are produced in a heat exchanger converting liquid fuel into said vapors; preventing flash back ignition of said air/fuel mixture in the mixing assembly.
Claim 14
Independent Claim
142 words
A method of reducing NOx contaminants in an internal combustion power source comprising the steps of: withdrawing a portion of fuel from a main fuel source; introducing a quantity of air with said portion of fuel to produce an air/fuel flow; conducting said air/fuel flow into a mixing assembly by forcibly urging said air/fuel flow into engagement with walls causing flow reversal and thorough mixing of air and fuel to produce a combustible vapor; igniting said combustible vapor in a burner chamber to produce combustion products; exhausting said combustion products from the burner into the combustion power source for mixing with main fuel; introducing air and fuel portion vapors into the mixing assembly for pre-heating wherein said vapors are produced in a heat exchanger converting liquid fuel into said vapors; preventing flash back ignition of said air/fuel mixture in the mixing assembly.
References Cited (Backward Citations)
US4066043A
Cited
US4441461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |