US3914347A
Expired / Lapsed
US
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Platelet-injector venturi carburetor for internal combustion engines
Assignee: Aerojet Rocketdyne Inc
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Filing: 1973-07-23
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Granted: 1975-10-21
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Expires: 1993-07-23
Abstract
Abstract A venturi carburetor for an internal combustion engine which provides more effective fuel atomization, mixing and vaporization to improve performance and minimize undesirable combustion emissions. Gasoline or other liquid fuel is injected into five narrow rectangular venturi diffuser sections in the form of very finely atomized droplets from eight small injection orifices located within the throat of each of the five venturis. The fuel injection assembly includes five rectangular injector plates each of which comprises a bonded assembly of individual platelets having transfer orifices and complex hydraulic flow channels precisely formed therein by photoetching. Together the platelets form a series of fuel delivery passages connecting the fuel supply with the platelet injection orifices in the venturi throat. Idle and main fuel delivery circuits are integrated into the injector assembly and multiple throttle plates are provided so that only one injector and venturi is effective during idle operation.
Inventors
- 👤 David L Kors
- 👤 Billy R Lawver
- 👤 John F Addoms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:18
CPC Classifications
F; F02; F02M; F02M13/00; F02M13/02; F02M13/04; F02M13/046; F02M19/00; F02M19/08; F02M19/10; Y; Y10; Y10S; Y10S261/00; Y10S261/39
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
109 words
A CARBURATOR FOR AN INTENAL COMBUSTION ENGINE COMRISING A VENTURI ASSEMBLY DEFINING A PLURALITY OF AIR DIFFUSER CHANNELS OF NARROW RECTANGULAR CROSS-SECTIONAL FLOW AREA AND A FUEL INJECTOR ASSEMBLY INCLUDING A PLURALITY OF GENERALLY RECTANGULAR INJECTOR PLATES EACH HAVING A PLURALIYT OF SMALL FUEL INJECTION ORIFICES AT THE LOWER POTION THEEOF, EACH OF SAID INJECTOR PLATES COMPRISING A PLURALITY OF PLATELET ELEMENTS TOGETHER DEFINING FUEL FLOW PASSAGES INTERCONNECTING A FUEL SOURCE WITH SAID INJECTOR ORIFICES, SAID INJECTOR PLATES BEING SO POSITIONED WITH RESPECT TO SAID DIFFER CHANNELS THAT SAID ORIFICES ARE LOCATED THEREIN AT THE THROAT PORTION THEREOF TO INTRODUCE FUEL THEREAT IN THE FORM OF FINELY ATOMIZED DROPLETS
Claim 2
Dependent Claim
109 words
A CARBURATOR FOR AN INTENAL COMBUSTION ENGINE COMRISING A VENTURI ASSEMBLY DEFINING A PLURALITY OF AIR DIFFUSER CHANNELS OF NARROW RECTANGULAR CROSS-SECTIONAL FLOW AREA AND A FUEL INJECTOR ASSEMBLY INCLUDING A PLURALITY OF GENERALLY RECTANGULAR INJECTOR PLATES EACH HAVING A PLURALIYT OF SMALL FUEL INJECTION ORIFICES AT THE LOWER POTION THEEOF, EACH OF SAID INJECTOR PLATES COMPRISING A PLURALITY OF PLATELET ELEMENTS TOGETHER DEFINING FUEL FLOW PASSAGES INTERCONNECTING A FUEL SOURCE WITH SAID INJECTOR ORIFICES, SAID INJECTOR PLATES BEING SO POSITIONED WITH RESPECT TO SAID DIFFER CHANNELS THAT SAID ORIFICES ARE LOCATED THEREIN AT THE THROAT PORTION THEREOF TO INTRODUCE FUEL THEREAT IN THE FORM OF FINELY ATOMIZED DROPLETS
Claim 3
Dependent Claim
43 words
The carburetor of claim 1 wherein said fuel flow passages include a plurality of injector channels connected to said injection orifices, a mixing area between said injector channels and said orifices and a plurality of air bleed passages communicating with said mixer section.
Claim 4
Dependent Claim
100 words
In a venturi carburetor of the type having a plurality of diffuser sections for mixing and vaporizing an air fuel mixture, the improvement comprising: a plurality of vanes of generally rectangular shape and tapered profile, adjacent surfaces of said vanes defining a diffuser section of narrow rectangular cross-sectional air flow area, and fuel injection means for introducing fuel into said venturi sections in the form of finely atomized droplets, said injeCtion means including a plurality of injector plates each having a plurality of small injection orifices centrally disposed within a corresponding one of said venturi sections at the throat thereof.
Claim 5
Dependent Claim
100 words
In a venturi carburetor of the type having a plurality of diffuser sections for mixing and vaporizing an air fuel mixture, the improvement comprising: a plurality of vanes of generally rectangular shape and tapered profile, adjacent surfaces of said vanes defining a diffuser section of narrow rectangular cross-sectional air flow area, and fuel injection means for introducing fuel into said venturi sections in the form of finely atomized droplets, said injeCtion means including a plurality of injector plates each having a plurality of small injection orifices centrally disposed within a corresponding one of said venturi sections at the throat thereof.
Claim 6
Dependent Claim
26 words
The carburetor of claim 3 wherein certain ones of said vanes extend downwardly below the termination of adjacent vanes forming a plurality of fuel induction channels.
Claim 7
Dependent Claim
19 words
Apparatus of claim 4 wherein each of said induction channels is provided with throttle means for selective operation thereof.
Claim 8
Dependent Claim
90 words
The combination of a platelet fuel injector assembly and a multiple venturi carburetor wherein said venturis have an elongate cross-sectional flow area and including a plurality of injector plates of laminar construction each including a plurality of platelets having small hydraulic flow passages formed therein terminating at a plurality of injection orifices, said injector assembly being so disposed within said venturis to locate a plurality of said orifices within each of said venturis along the major axis thereof and fuel delivery means connecting said injection orifices with a fuel source.
Claim 9
Dependent Claim
90 words
The combination of a platelet fuel injector assembly and a multiple venturi carburetor wherein said venturis have an elongate cross-sectional flow area and including a plurality of injector plates of laminar construction each including a plurality of platelets having small hydraulic flow passages formed therein terminating at a plurality of injection orifices, said injector assembly being so disposed within said venturis to locate a plurality of said orifices within each of said venturis along the major axis thereof and fuel delivery means connecting said injection orifices with a fuel source.
Claim 10
Dependent Claim
41 words
The injector assembly of claim 6 wherein said fuel delivery means includes dual fuel distribution channels, one of said channels communicating with one of said injector plates and the other of said channels communicating with the remainder of said injector plates.
Claim 11
Dependent Claim
124 words
A carburetor for an internal combustion engine comprising: venturi means defining at least one air flow passage of elongate cross-sectional flow area and having a throat section and a diffuser section and platelet fuel injector means associated with said venturi passage and including a plurality of small fuel injection orifices disposed within said venturi throat section, said platelet fuel injector means further comprising at least one injector plate disposed within said venturi passage so that said injection orifices are disposed along the major axis thereof, said injector plate being of laminar construction wherein a plurality of platelet elements having fuel flow channels and transfer orifices formed therein are bonded together to define fuel flow passages connecting an external fuel source with said injection orifices.
Claim 12
Dependent Claim
124 words
A carburetor for an internal combustion engine comprising: venturi means defining at least one air flow passage of elongate cross-sectional flow area and having a throat section and a diffuser section and platelet fuel injector means associated with said venturi passage and including a plurality of small fuel injection orifices disposed within said venturi throat section, said platelet fuel injector means further comprising at least one injector plate disposed within said venturi passage so that said injection orifices are disposed along the major axis thereof, said injector plate being of laminar construction wherein a plurality of platelet elements having fuel flow channels and transfer orifices formed therein are bonded together to define fuel flow passages connecting an external fuel source with said injection orifices.
Claim 13
Dependent Claim
25 words
The carburetor of claim 8 further comprising a plurality of rectangular throttle plates disposed within said venturi passages to selectively control the air flow therethrough.
Claim 14
Dependent Claim
134 words
A carburetor for an internal combustion engine comprising: venturi means defining at least one air flow passage having a throat section and a diffuser section and platelet fuel injector means associated with said venturi passage and including a plurality of small fuel injection orifices disposed within said venturi throat section, said platelet fuel injector means further comprising at least one injector plate of laminar construction wherein a plurality of platelet elements having fuel flow channels and transfer orifices formed therein are bonded together to define fuel flow passages connecting an external fuel source with said injection orifices, said injector plates further having a plurality of air bleed passages formed therein and wherein each of said fuel flow passages has at least one of said air bleed passages connected thereto in proximity of said orifices.
Claim 15
Dependent Claim
134 words
A carburetor for an internal combustion engine comprising: venturi means defining at least one air flow passage having a throat section and a diffuser section and platelet fuel injector means associated with said venturi passage and including a plurality of small fuel injection orifices disposed within said venturi throat section, said platelet fuel injector means further comprising at least one injector plate of laminar construction wherein a plurality of platelet elements having fuel flow channels and transfer orifices formed therein are bonded together to define fuel flow passages connecting an external fuel source with said injection orifices, said injector plates further having a plurality of air bleed passages formed therein and wherein each of said fuel flow passages has at least one of said air bleed passages connected thereto in proximity of said orifices.
Claim 16
Dependent Claim
144 words
A carburetor for an internal combustion engine comprising: venturi means defining at least one air flow passage having a throat section and a diffuser section and platelet fuel injector means associated with said venturi passage and including a plurality of small fuel injection orifices disposed within said venturi throat section, said platelet fuel injector means further comprising at least one injector plate of laminar construction wherein a plurality of platelet elements having fuel flow channels and transfer orifices formed therein are bonded together to define fuel flow passages connecting an external fuel source with said injection orifices, said fuel injector means further having fuel distribution means associated with said injector plates and comprising two isolated fuel delivery circuits, one of said circuits communicating only with a selected one of said plates and the other of said circuits communicating with the others of said plates.
Claim 17
Dependent Claim
144 words
A carburetor for an internal combustion engine comprising: venturi means defining at least one air flow passage having a throat section and a diffuser section and platelet fuel injector means associated with said venturi passage and including a plurality of small fuel injection orifices disposed within said venturi throat section, said platelet fuel injector means further comprising at least one injector plate of laminar construction wherein a plurality of platelet elements having fuel flow channels and transfer orifices formed therein are bonded together to define fuel flow passages connecting an external fuel source with said injection orifices, said fuel injector means further having fuel distribution means associated with said injector plates and comprising two isolated fuel delivery circuits, one of said circuits communicating only with a selected one of said plates and the other of said circuits communicating with the others of said plates.
References Cited (Backward Citations)
US1319158A
Cited
US1393044A
Cited
US1449664A
Cited
US1758954A
Cited
US1893920A
Cited
US2573093A
Cited
US2685916A
Cited
US3181287A
Cited
US3615054A
Cited
US3523680A
Cited
US3758082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |