US3641802A
Expired / Lapsed
US
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Method and apparatus for setting the flow rate of a fuel injection nozzle
Assignee: Parker Hannifin Corp
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Filing: 1969-09-17
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Granted: 1972-02-15
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Expires: 1989-09-17
Abstract
Abstract A method and apparatus wherein a tapered plug member, e.g. a cone or a ball, is forcibly engaged with a nozzle body member to progressively deform the latter to decrease the flow capacity through the swirl slots in the body member until a desired fluid flow rate is achieved.
Inventors
- 👤 Basil S Segro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:39
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/16; F02M61/168; F02M61/162; F02M61/163; F02M2700/00; F02M2700/07; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49432; Y10T29/49433
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
66 words
The method of setting the flow rate of a fuel injection nozzle having a swirl slot which enters a vortex chamber and which is defined between two interengaged members of which one spans the width of a groove in the other, said method comprising pressing said members together to progressively decrease the depth of the swirl slot until the flow rate therethrough reaches a desired value.
Claim 2
Independent Claim
66 words
The method of setting the flow rate of a fuel injection nozzle having a swirl slot which enters a vortex chamber and which is defined between two interengaged members of which one spans the width of a groove in the other, said method comprising pressing said members together to progressively decrease the depth of the swirl slot until the flow rate therethrough reaches a desired value.
Claim 3
Independent Claim
84 words
The method of setting the flow rate of a fuel injection nozzle having a swirl slot entering a vortex chamber which comprises deforming the nozzle to progressively decrease the swirl slot flow area until the flow rate therethrough reaches a desired value, the deformation of the nozzle being effected by pressing a tapered member which spans the width of the swirl slot against an initially relatively sharp seat adjacent said slot to progressively deform said seat to thus decrease the depth of said slot.
Claim 4
Independent Claim
84 words
The method of setting the flow rate of a fuel injection nozzle having a swirl slot entering a vortex chamber which comprises deforming the nozzle to progressively decrease the swirl slot flow area until the flow rate therethrough reaches a desired value, the deformation of the nozzle being effected by pressing a tapered member which spans the width of the swirl slot against an initially relatively sharp seat adjacent said slot to progressively deform said seat to thus decrease the depth of said slot.
Claim 5
Dependent Claim
40 words
The method of claim 2 wherein said tapered member is a plug member; and wherein said seat is at the juncture of a shoulder in a nozzle body member containing such slot and the peripheral wall of the vortex chamber.
Claim 6
Dependent Claim
30 words
The method of claim 3 wherein said tapered member is rotated while pressed against said seat thus to burnish the seat as it is being deformed by said plug member.
Claim 7
Dependent Claim
12 words
The method of claim 3 wherein said plug member is a ball.
Claim 8
Independent Claim
163 words
The method of setting the flow rate of a fuel injection nozzle of the type wherein a plug member and a body member define therebetween a swirl slot and a vortex chamber into which said slot opens to impart whirling motion to fuel entering said chamber; said body meMber having a discharge orifice for emergence of the whirling fuel from said chamber in the form of a hollow spray cone; said method comprising the steps of pressing a simulated plug member against said body member to deform the latter to progressively decrease the swirl slot flow area; conducting fluid through said slot, chamber, and orifice and observing the rate of flow of fluid as said body member is thus deformed; discontinuing such deformation when the rate of flow of fluid reaches a desired value; and replacing said simulated plug member with said plug member to effect engagement of the latter with the body member as thus predeterminately deformed by said simulated plug member.
Claim 9
Independent Claim
163 words
The method of setting the flow rate of a fuel injection nozzle of the type wherein a plug member and a body member define therebetween a swirl slot and a vortex chamber into which said slot opens to impart whirling motion to fuel entering said chamber; said body meMber having a discharge orifice for emergence of the whirling fuel from said chamber in the form of a hollow spray cone; said method comprising the steps of pressing a simulated plug member against said body member to deform the latter to progressively decrease the swirl slot flow area; conducting fluid through said slot, chamber, and orifice and observing the rate of flow of fluid as said body member is thus deformed; discontinuing such deformation when the rate of flow of fluid reaches a desired value; and replacing said simulated plug member with said plug member to effect engagement of the latter with the body member as thus predeterminately deformed by said simulated plug member.
Claim 10
Dependent Claim
28 words
The method of claim 6 wherein said body member is hardened after such deformation to maintain the swirl slot flow area setting when engaged by said plug member.
Claim 11
Independent Claim
167 words
The method of setting the flow rate of a fuel injection nozzle of the type wherein a tapered plug member and a body member define therebetween a swirl slot and a vortex chamber into which said slot opens to impart whirling motion to fuel entering said chamber for emergence in the form of a hollow spray cone from a discharge orifice in said body member; said method comprising pressing a simulated tapered plug member against a relatively sharp edged seat at the juncture of a shoulder in said body member containing such slot and the peripheral wall of said vortex chamber to deform said seat to progressively decrease the depth of said slot; observing the rate of flow of fluid through said slot as said seat is thus deformed; discontinuing such deformation when the flow rate is a desired value; and replacing said simulated plug member with said plug member to effect engagement of the latter with the seat as thus deformed by said simulated plug member.
Claim 12
Independent Claim
167 words
The method of setting the flow rate of a fuel injection nozzle of the type wherein a tapered plug member and a body member define therebetween a swirl slot and a vortex chamber into which said slot opens to impart whirling motion to fuel entering said chamber for emergence in the form of a hollow spray cone from a discharge orifice in said body member; said method comprising pressing a simulated tapered plug member against a relatively sharp edged seat at the juncture of a shoulder in said body member containing such slot and the peripheral wall of said vortex chamber to deform said seat to progressively decrease the depth of said slot; observing the rate of flow of fluid through said slot as said seat is thus deformed; discontinuing such deformation when the flow rate is a desired value; and replacing said simulated plug member with said plug member to effect engagement of the latter with the seat as thus deformed by said simulated plug member.
Claim 13
Dependent Claim
27 words
The method of claim 8 wherein said seat is hardened after such deformation to maintain the swirl slot flow area setting when engaged by said plug member.
Claim 14
Dependent Claim
146 words
Apparatus for setting the flow rate of the swirl slot of a nozzle body member having a vortex chamber into which said slot opens and a discharge orifice for discharge of whirling fuel from said chamber in hollow spray cone form; said apparatus comprising a housing having an inlet port for connection to a fluid supply source and an outlet port to receive said nozzle body member for flow of fluid through said slot, chamber, and orifice; a plug member in said housing engageable with said body member to close the upstream end of said chamber and to span the width of said slot; and actuating means for forcing said plug member against said body member to progressively deform the latter so as to progressively decrease the depth of said slot until the rate of flow of fluid through said body member reaches a desired value.
Claim 15
Dependent Claim
146 words
Apparatus for setting the flow rate of the swirl slot of a nozzle body member having a vortex chamber into which said slot opens and a discharge orifice for discharge of whirling fuel from said chamber in hollow spray cone form; said apparatus comprising a housing having an inlet port for connection to a fluid supply source and an outlet port to receive said nozzle body member for flow of fluid through said slot, chamber, and orifice; a plug member in said housing engageable with said body member to close the upstream end of said chamber and to span the width of said slot; and actuating means for forcing said plug member against said body member to progressively deform the latter so as to progressively decrease the depth of said slot until the rate of flow of fluid through said body member reaches a desired value.
Claim 16
Dependent Claim
32 words
The apparatus of claim 10 wherein said plug member has a tapered surface which initially engages said body member in substantially line contact, such contact progressively widening radially as such deformation progresses.
Claim 17
Dependent Claim
39 words
The apparatus of claim 10 wherein a cap member detachably secured to said housing is operative to clamp said body member in said outlet port, said cap member having an opening through which fluid is sprayed from said orifice.
Claim 18
Dependent Claim
35 words
The apparatus of claim 10 wherein a conduit between said inlet port and the fluid supply source has therein flow and pressure indicating means to facilitate precise setting of the flow rate at prescribed pressure.
Claim 19
Dependent Claim
38 words
The apparatus of claim 10 wherein said actuating means comprises interengaged screw threads on said housing and plug member whereby, upon rotation of said plug member, said body member is compressively deformed and, at the same time, burnished.
References Cited (Backward Citations)
US3095175A
Cited
US3150442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |