US5007381A
Expired / Lapsed
US
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Method to decrease black smoke of diesel
Assignee: Advanced Combustion Engineering Institute Co Ltd
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Filing: 1990-01-22
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Granted: 1991-04-16
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Expires: 2010-01-22
Abstract
Abstract The method by this invention is characterized in that a fuel injection nozzle to inject diesel fuel oil into cylinder and an auxiliary injection nozzle to inject the combustible gas or non-combustible gas into the cylinder are provided, and that said combustible gas or non-combustible gas is injected in the latter stage of the diesel fuel oil combustion. More concretely, a part of the fuel is reformed to combustion gases by a fuel reforming apparatus and the gases are injected, or the combustible gas or non-combustible gas is prepared in another gas cylinder, and this gas is injected in the latter stage of the combustion.
Inventors
- 👤 Toshiaki Kakegawa
- 👤 Shoichi Furuhama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:13
CPC Classifications
F; F02; F02B; F02B43/00; F02B43/02; F02B43/04; F02B7/00; F02D; F02D19/00; F02D19/06; F02D19/0639; F02D19/0642; F02D19/0644; F02D19/0663; F02D19/0668; F02D19/0671; F02D19/08; F02D19/081; F02D19/12; F02B3/00; F02B3/06; F02D19/0686; F02D19/0689; F02D19/0692; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/30; Y10; Y10S; Y10S123/00; Y10S123/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
A method for decreasing black smoke of an operating diesel engine, characterized in that a fuel injection nozzle to inject the fuel into a combustion chamber in a cylinder of the diesel engine and an auxiliary injection nozzle to inject combustible gas or non-combustible gas into the combustion chamber of the cylinder are provided, and that said combustible gas or non-combustible gas is injected into the cylinder in the latter stage of combustion.
Claim 2
Independent Claim
73 words
A method for decreasing black smoke of an operating diesel engine, characterized in that a fuel injection nozzle to inject the fuel into a combustion chamber in a cylinder of the diesel engine and an auxiliary injection nozzle to inject combustible gas or non-combustible gas into the combustion chamber of the cylinder are provided, and that said combustible gas or non-combustible gas is injected into the cylinder in the latter stage of combustion.
Claim 3
Dependent Claim
48 words
A method for decreasing black smoke of diesel engine as set forth in claim 1, wherein a portion of the fuel is reformed by a fuel reforming apparatus to produce a reformed combustible gas and the reformed combustible gas is injected in the latter stage of the combustion.
Claim 4
Dependent Claim
33 words
A method for decreasing black smoke of diesel engine as set forth in claim 1, wherein said combustible gas is selected from the group consisting of hydrogen, carbon monoxide and a mixtures thereof.
Claim 5
Dependent Claim
31 words
A method for decreasing black smoke of diesel engine as set forth in claim 1, wherein said non-combustible gas is selected from the group consisting of oxygen, helium, nitrogen and argon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |