US3656464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection nozzle and system
Assignee: Fuel Injection Engineering Co
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Filing: 1970-03-30
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Granted: 1972-04-18
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Expires: 1990-03-30
Abstract
Abstract A fuel injection nozzle having a passage extending therethrough and terminating at one end in an outlet. An atomizing device is positioned in the passage adjacent the outlet. The nozzle is preferably mounted on an intake manifold of an engine at such an angle that it directs the fuel into the manifold in the same direction as the air flowing through the manifold. The nozzle controls the shape of the spray pattern so that the cross sectional configuration of the spray pattern generally conforms to the cross sectional configuration of the manifold.
Inventors
- 👤 Stuart G Hilborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:33
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/04; F02M69/047; Y; Y10; Y10S; Y10S239/00; Y10S239/22; Y10S261/00; Y10S261/82
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
275 words
A fuel injection system for supplying fuel to an engine comprising: an intake manifold for supplying fuel and air to the engine, a predetermined region of the manifold adjacent the engine being of a predetermined cross sectional configuration; a fuel injection nozzle mounted on said intake manifold adjacent said region; means for supplying fuel under pressure to the fuel injection nozzle; a valve means for controlling the supply of fuel under pressure to the fuel injection nozzle; a throttle valve for controlling air flow through the manifold; said nozzle having a fuel passage therethrough, said passage including an outlet and first and second contiguous portions with said first portion including said outlet, said outlet being adapted to direct fuel into said region and toward the engine generally in the same direction as the direction of air flow through said region of said manifold; said nozzle having means including at least two strand-like elements adjacent the outlet and spaced from said second portion for atomizing the fuel supplied therethrough to the manifold; the cross sectional area of said first portion immediately adjacent the strand-like elements being larger than the cross sectional area of said second portion at the juncture of said portions; and said nozzle including means for directing the atomized fuel into the engine in a predetermined pattern which is substantially coaxial with said region and which is of a cross sectional size to substantially avoid wetting of the manifold walls with the atomized fuel, the cross sectional shape of said pattern being similar to said predetermined cross sectional configuration of said region whereby wetting of the manifold walls with the atomized fuel is minimized.
Claim 2
Dependent Claim
275 words
A fuel injection system for supplying fuel to an engine comprising: an intake manifold for supplying fuel and air to the engine, a predetermined region of the manifold adjacent the engine being of a predetermined cross sectional configuration; a fuel injection nozzle mounted on said intake manifold adjacent said region; means for supplying fuel under pressure to the fuel injection nozzle; a valve means for controlling the supply of fuel under pressure to the fuel injection nozzle; a throttle valve for controlling air flow through the manifold; said nozzle having a fuel passage therethrough, said passage including an outlet and first and second contiguous portions with said first portion including said outlet, said outlet being adapted to direct fuel into said region and toward the engine generally in the same direction as the direction of air flow through said region of said manifold; said nozzle having means including at least two strand-like elements adjacent the outlet and spaced from said second portion for atomizing the fuel supplied therethrough to the manifold; the cross sectional area of said first portion immediately adjacent the strand-like elements being larger than the cross sectional area of said second portion at the juncture of said portions; and said nozzle including means for directing the atomized fuel into the engine in a predetermined pattern which is substantially coaxial with said region and which is of a cross sectional size to substantially avoid wetting of the manifold walls with the atomized fuel, the cross sectional shape of said pattern being similar to said predetermined cross sectional configuration of said region whereby wetting of the manifold walls with the atomized fuel is minimized.
Claim 3
Dependent Claim
135 words
A fuel injection system for supplying fuel to an air intake manifold of an engine comprising: a fuel injection nozzle connectible to the intake manifold of the engine, said nozzle having a passage therethrough for supplying fuel to the engine; means for supplying fuel under pressure to the fuel injection nozzle; valve means for controlling the supply of fuel under pressure to the fuel injection nozzle; said passage terminating in an outlet; at least two elongated elements; means for mounting said elongated elements on said fuel injection nozzle closely adjacent said outlet, said strandlike elements extending into the path of fuel flow and generally transverse to said path; and said elongated elements defining a plurality of impingement surfaces adjacent said outlet whereby impingement of the fuel on said elongated elements causes atomization of the fuel.
Claim 4
Dependent Claim
135 words
A fuel injection system for supplying fuel to an air intake manifold of an engine comprising: a fuel injection nozzle connectible to the intake manifold of the engine, said nozzle having a passage therethrough for supplying fuel to the engine; means for supplying fuel under pressure to the fuel injection nozzle; valve means for controlling the supply of fuel under pressure to the fuel injection nozzle; said passage terminating in an outlet; at least two elongated elements; means for mounting said elongated elements on said fuel injection nozzle closely adjacent said outlet, said strandlike elements extending into the path of fuel flow and generally transverse to said path; and said elongated elements defining a plurality of impingement surfaces adjacent said outlet whereby impingement of the fuel on said elongated elements causes atomization of the fuel.
Claim 5
Dependent Claim
32 words
A fuel injection system as defined in claim 2 including a plurality of said elongated elements in addition to said two elongated eleMents, said elongated elements defining a screen adjacent said outlet.
Claim 6
Dependent Claim
80 words
A fuel injection system as defined in claim 2 wherein said passage has first and second contiguous portions with the first portion containing sad outlet, said first portion having a region extending from the juncture of said portions toward said outlet, the cross sectional area of said region of said first portion being greater than the cross sectional area of the second portion at the juncture of said portions, said elongated elements being in said region of said first portion.
Claim 7
Dependent Claim
20 words
A fuel injection system as defined in claim 4 wherein said elements are spaced from said juncture of said portions.
Claim 8
Dependent Claim
23 words
A fuel injection system as defined in claim 4 wherein said second portion is substantially longer than said first portion of said passage.
Claim 9
Dependent Claim
37 words
A fuel injection system as defined in claim 4 wherein the cross sectional area of said outlet is at least as large as the cross sectional area of the first portion at the juncture of said portions.
Claim 10
Dependent Claim
55 words
A fuel injection system as defined in claim 2 wherein the intake manifold supplies air to the engine with the air travelling along a predetermined path in said manifold to the engine, the axis of said passage of said nozzle extending in the same general direction as said path at the location of said outlet.
Claim 11
Dependent Claim
18 words
A fuel injection system as defined in claim 1 wherein said predetermined cross sectional configuration is generally circular.
Claim 12
Dependent Claim
26 words
A fuel injection system as defined in claim 1 wherein said means for atomizing includes a screen adjacent said outlet against which the fuel can impinge.
Claim 13
Dependent Claim
184 words
A fuel injection nozzle for directing fuel and air into an engine comprising: body means having a passage therethrough, said passage including an inlet section connectible to a source of fuel under pressure, an intermediate section and an outlet section, said outlet section having an outlet for directing fuel into the engine; said body means having means for conducting air to the intermediate section whereby the fuel and air in said intermediate section can flow through the outlet section to the outlet; said outlet section having a downstream portion and an upstream portion, said downstream portion defining said outlet, said portions of said outlet section being contiguous; an atomizing member mounted on said body means, said atomizing member including at least two generally transversely extending elongated atomizing elements against which the fuel stream can impinge, each of said two elements extending at least partially across the downstream portion at a location spaced from said juncture; and the cross sectional area of said downstream portion at said location being greater than the cross sectional area of said upstream portion at the juncture of said portions.
Claim 14
Dependent Claim
184 words
A fuel injection nozzle for directing fuel and air into an engine comprising: body means having a passage therethrough, said passage including an inlet section connectible to a source of fuel under pressure, an intermediate section and an outlet section, said outlet section having an outlet for directing fuel into the engine; said body means having means for conducting air to the intermediate section whereby the fuel and air in said intermediate section can flow through the outlet section to the outlet; said outlet section having a downstream portion and an upstream portion, said downstream portion defining said outlet, said portions of said outlet section being contiguous; an atomizing member mounted on said body means, said atomizing member including at least two generally transversely extending elongated atomizing elements against which the fuel stream can impinge, each of said two elements extending at least partially across the downstream portion at a location spaced from said juncture; and the cross sectional area of said downstream portion at said location being greater than the cross sectional area of said upstream portion at the juncture of said portions.
Claim 15
Dependent Claim
25 words
A nozzle as defined in claim 11 wherein said atomizing member includes a screen extending at least substantially across said downstream portion at said location.
Claim 16
Dependent Claim
82 words
A fuel injection nozzle as defined in claim 12 wherein said outlet section is elongated, said means for conducting includes at least one aperture in said body means providing communication between the intermediate section and the exterior of the body means, said inlet and outlet sections being of lesser cross sectional area than the intermediate section at their respective junctures with the intermediate section. 14 A fuel injection nozzle as defined in claim 11 wherein said location is within said downstream portion.
Claim 17
Dependent Claim
240 words
A fuel injection nozzle for supplying fuel to an engine comprising: body means having a passage therethrough, said passage including an inlet section, an outlet section and an intermediate section, said outlet section terminating in an outlet and said inlet section being connectible to a source of fuel, said passage being adapted to conduct fuel therethrough; said outlet section having a first portion and a second portion with said first portion incLuding said outlet, said portions being contiguous; said second portion being elongated; means for directing a stream of fuel across at least a portion of said intermediate section and into said outlet section, said stream of fuel being of lesser cross sectional area than said intermediate section; an atomizing screen; means for mounting said atomizing screen on said body means in the path of fuel flow, said atomizing screen being adjacent said outlet and spaced from said second portion; the cross sectional area of said first portion immediately adjacent the atomizing device being larger than the cross sectional area of said second portion at the juncture of said portions; and said second portion of said passage being adapted to direct a stream of fuel against said atomizing screen whereby said atomizing screen atomizes the fuel directed thereagainst to produce a spray pattern with the cross sectional area of the spray pattern being a function of the distance between the atomizing screen and the adjacent end of said second portion.
Claim 18
Dependent Claim
240 words
A fuel injection nozzle for supplying fuel to an engine comprising: body means having a passage therethrough, said passage including an inlet section, an outlet section and an intermediate section, said outlet section terminating in an outlet and said inlet section being connectible to a source of fuel, said passage being adapted to conduct fuel therethrough; said outlet section having a first portion and a second portion with said first portion incLuding said outlet, said portions being contiguous; said second portion being elongated; means for directing a stream of fuel across at least a portion of said intermediate section and into said outlet section, said stream of fuel being of lesser cross sectional area than said intermediate section; an atomizing screen; means for mounting said atomizing screen on said body means in the path of fuel flow, said atomizing screen being adjacent said outlet and spaced from said second portion; the cross sectional area of said first portion immediately adjacent the atomizing device being larger than the cross sectional area of said second portion at the juncture of said portions; and said second portion of said passage being adapted to direct a stream of fuel against said atomizing screen whereby said atomizing screen atomizes the fuel directed thereagainst to produce a spray pattern with the cross sectional area of the spray pattern being a function of the distance between the atomizing screen and the adjacent end of said second portion.
Claim 19
Dependent Claim
34 words
A fuel injection nozzle as defined in claim 15 wherein said atomizing screen is mounted within said first portion axially inwardly of said outlet whereby said atomizing screen is protected by said body means.
Claim 20
Dependent Claim
52 words
A fuel injection nozzle as defined in claim 15 wherein said outlet section includes a bore and a counterbore defining said first and second portions, respectively, said body means defining a shoulder at the juncture of said first and second portions, said atomizing screen lying axially intermediate said shoulder and said outlet.
Claim 21
Dependent Claim
32 words
A fuel injection nozzle as defined in claim 15 wherein said body means includes an annular retainer defining said outlet and clamping said atomizing device against another portion of said body means.
Claim 22
Dependent Claim
51 words
A fuel injection nozzle as defined in claim 15 wherein said intermediate section is of larger cross sectional area than said outlet section, said second portion being longer axially than said first portion, said second portion being of lesser cross sectional area throughout the full length thereof than said first portion.
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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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |