US3612407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiorifice-type airless injection nozzle
Assignee: Komatsu Ltd
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Filing: 1969-09-19
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Granted: 1971-10-12
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Expires: 1989-09-19
Abstract
Abstract This specification discloses an improved airless fuel injection nozzle which injects a controlled amount of finely particularized fuel into predetermined zones of a combustion chamber prior to ignition and thereafter provides a steadily increasing flow of fuel for controlled combustion during the remainder of a combustion cycle. Means are provided for particularizing the fuel prior to ignition by dividing a fuel supply flow into two separate flows and then recombining these flows by a collision process to effect particularization. Means are also provided for cyclically terminating this particularization process and for providing a relatively greater fuel flow during the remainder of a combustion cycle.
Inventors
- 👤 Takumi Itano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:17
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/04; F02M61/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
A fuel injection nozzle including: means to divide a fuel flow into first and second streams of fuel, said means comprising an inner fuel-adjusting pin structure and an outer concentric guide structure with an included annular space between said structures for containing said first and second fuel streams wherein said inner structure is hollow and at least partially open at both ends to allow fuel passage at both ends to said included annular space thus providing said first and second fuel streams and where said outer structure is closed at one end and adapted to receive said undivided fuel flow at the opposite end; means recombine said first and second streams of fuel from substantially opposed directions of flow, whereby said first and second streams will recombine by collision one with the other, and means for routing the recombined stream in predetermined directions of flow to a combustion zone.
Claim 2
Dependent Claim
149 words
A fuel injection nozzle including: means to divide a fuel flow into first and second streams of fuel, said means comprising an inner fuel-adjusting pin structure and an outer concentric guide structure with an included annular space between said structures for containing said first and second fuel streams wherein said inner structure is hollow and at least partially open at both ends to allow fuel passage at both ends to said included annular space thus providing said first and second fuel streams and where said outer structure is closed at one end and adapted to receive said undivided fuel flow at the opposite end; means recombine said first and second streams of fuel from substantially opposed directions of flow, whereby said first and second streams will recombine by collision one with the other, and means for routing the recombined stream in predetermined directions of flow to a combustion zone.
Claim 3
Dependent Claim
24 words
A device as in claim 1 wherein said means for routing the recombined streams consists of injection holes formed in said outer guide structure.
Claim 4
Dependent Claim
35 words
A device as in claim 2 including means for axially moving said inner fuel-adjusting pin structure away from the closed end of said outer guide structure and means for simultaneously increasing the available fuel flow.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |