Claims
- 1. An adjustable fuel metering apparatus for adjustable control external to the carburetor of a flowrate of fuel from a fuel bowl of the carburetor to a pair of fuel supply passages of the carburetor, said apparatus comprising:
- (a) a substantially solid rectangular plate having an inlet surface adapted to be oriented toward a fuel bowl of a carburetor and an opposite outlet surface adapted to be oriented toward a pair of fuel passages of the carburetor;
- (b) a needle valve chamber formed within said plate and including a needle valve seat;
- (c) at least one fuel inlet passage formed within said plate, communicating between said inlet surface and said needle valve chamber, and adapted to communicate fuel from a fuel bowl of the carburetor to said needle valve chamber;
- (d) a plurality of fuel outlet passages formed within said plate, communicating between said needle valve chamber and said outlet surface, and adapted to communicate fuel from said needle valve chamber to corresponding fuel supply passages of the carburetor;
- (e) a single threaded needle valve bore formed into said plate in communication with said needle valve chamber, said needle valve bore being positioned and oriented to enable access thereto external to said carburetor; and
- (f) a threaded needle valve member positioned within said needle valve bore and having a valve end, said needle valve member being rotatable within said bore to position said valve end in a selected spaced relation to said needle valve seat to thereby control the flowrate of fuel from said inlet passage to said outlet passages.
- 2. An apparatus as set forth in claim 1 wherein said fuel inlet passage is a first fuel inlet passage, and including:
- (a) a second fuel inlet passage formed within said plate and communicating between said inlet surface of said plate and said needle valve chamber.
- 3. An apparatus as set forth in claim 1 wherein:
- (a) a fuel inlet port is formed into said inlet surface of said plate and positioned to receive fuel from the fuel bowl, said inlet port communicating with said inlet passage.
- 4. An apparatus as set forth in claim 1 wherein:
- (a) a pair of fuel outlet ports are formed into said outlet surface of said plate in spaced apart relation and positioned to communicate fuel respectively to said fuel supply passages of said carburetor, said outlet ports communicating respectively with said outlet passages.
- 5. An apparatus as set forth in claim 1 wherein:
- (a) said inlet surface and said outlet surface are substantially parallel; and
- (b) said inlet passage and said outlet passages extend substantially parallel to said inlet and outlet surfaces.
- 6. An apparatus as set forth in claim 1 wherein:
- (a) said plate has peripheral surfaces extending between said inlet surface and said outlet surface;
- (b) said inlet passage and said outlet passages are formed by respective bores machined through said peripheral surfaces; and
- (c) respective sealing plugs are received into said bores adjacent said peripheral surfaces to seal said inlet passage and said outlet passages from said peripheral surfaces.
- 7. An adjustable fuel metering apparatus for replacement of fixed fuel metering jets of a carburetor to enable adjustable control external to the carburetor of a flowrate of fuel from a fuel bowl of the carburetor to a pair of fuel supply passages of the carburetor, said apparatus comprising:
- (a) a substantially rectangular plate having substantially continuous opposite surfaces including an inlet surface adapted to be oriented toward a fuel bowl of a carburetor and an opposite outlet surface adapted to be oriented toward a pair of fuel passages of the carburetor;
- (b) a needle valve chamber formed within said plate and including a needle valve seat;
- (c) a fuel inlet port formed into said inlet surface of said plate and positioned to receive fuel from the fuel bowl;
- (d) a fuel inlet passage formed within said plate and communicating between said fuel inlet port and said needle valve chamber;
- (e) a pair of fuel outlet ports formed into said outlet surface of said plate in spaced apart relation and positioned to communicate fuel respectively to said fuel supply passages of said carburetor;
- (f) a pair of fuel outlet passages formed within said plate and communicating between said needle valve chamber and respective ones of said fuel outlet port;
- (g) a single threaded needle valve bore formed into said plate in communication with said needle valve chamber, said needle valve bore being positioned and oriented to enable access thereto external to said carburetor; and
- (h) a threaded needle valve member positioned within said needle valve bore and having a valve end, said needle valve member being rotatable within said bore to position said valve end in a selected spaced relation to said needle valve seat to thereby control the flowrate of fuel from said inlet passage to said outlet passages.
- 8. An apparatus as set forth in claim 7 wherein said fuel inlet port and said fuel inlet passage are respectively a first fuel inlet port and a first fuel inlet passage, and including:
- (a) a second fuel inlet port formed into said inlet surface of said plate in spaced relation to said first fuel inlet port, said second fuel inlet port being positioned to receive fuel from the fuel bowl; and
- (b) a second fuel inlet passage formed within said plate and communicating between said second fuel inlet port and said needle valve chamber.
- 9. An apparatus as set forth in claim 7 wherein:
- (a) said inlet surface and said outlet surface are substantially parallel;
- (b) said fuel inlet port and said fuel outlet ports are bored into said plate substantially perpendicular to said inlet and outlet surfaces; and
- (c) said inlet passage and said outlet passages extend substantially parallel to said inlet and outlet surfaces.
- 10. An apparatus as set forth in claim 7 wherein:
- (a) said plate has peripheral surfaces extending between said inlet surface and said outlet surface;
- (b) said inlet passage and said outlet passages are formed by respective bores machined through said peripheral surfaces; and
- (c) respective sealing plugs are received into said bores adjacent said peripheral surfaces to seal said inlet passage and said outlet passages from said peripheral surfaces.
- 11. An adjustable fuel metering apparatus for replacement of fixed fuel metering jets of a carburetor to enable adjustable control external to the carburetor of a flowrate of fuel from a fuel bowl of the carburetor to a pair of fuel supply passages of the carburetor, said apparatus comprising:
- (a) a substantially rectangular plate having substantially continuous opposite surfaces including an inlet surface adapted to be oriented toward a fuel bowl of a carburetor and an opposite outlet surface adapted to be oriented toward a pair of fuel passages of the carburetor, said inlet surface and said outlet surface being substantially parallel;
- (b) a needle valve chamber formed within said plate and including a needle valve seat;
- (c) a fuel inlet port formed substantially perpendicularly into said inlet surface of said plate and positioned to receive fuel from the fuel bowl;
- (d) a fuel inlet passage formed within said plate and extending substantially parallel to said inlet and outlet surfaces to communicate between said fuel inlet port and said needle valve chamber;
- (e) a pair of fuel outlet ports formed substantially perpendicularly into said outlet surface of said plate in spaced apart relation and positioned to communicate fuel respectively to said fuel supply passages of said carburetor;
- (f) a pair of fuel outlet passages formed within said plate and extending substantially parallel to said inlet and outlet surfaces to communicate between said needle valve chamber and respective ones of said fuel outlet port;
- (g) a single threaded needle valve bore formed into said plate in communication with said needle valve chamber, said needle valve bore being positioned and oriented to enable access thereto external to said carburetor; and
- (h) a threaded needle valve member positioned within said needle valve bore and having a valve end, said needle valve member being rotatable within said bore to position said valve end in a selected spaced relation to said needle valve seat to thereby control the flowrate of fuel from said inlet passage to said outlet passages.
- 12. An apparatus as set forth in claim 11 wherein said fuel inlet port and said fuel inlet passage are respectively a first fuel inlet port and a first fuel inlet passage, and including:
- (a) a second fuel inlet port formed into said inlet surface of said plate in spaced relation to said first fuel inlet port, said second fuel inlet port being positioned to receive fuel from the fuel bowl; and
- (b) a second fuel inlet passage formed within said plate and communicating between said second fuel inlet port and said needle valve chamber.
- 13. An apparatus as set forth in claim 12 wherein:
- (a) said plate has peripheral surfaces extending between said inlet surface and said outlet surface;
- (b) said inlet passage and said outlet passages are formed by respective bores machined through said peripheral surfaces; and
- (c) respective sealing plugs are received into said bores adjacent said peripheral surfaces to seal said inlet passage and said outlet passages from said peripheral surfaces.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of application Ser. No. 08/525,966 filed Aug. 9, 1995 entitled ADJUST-A-JET, which is now abandoned.
US Referenced Citations (7)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
525966 |
Aug 1995 |
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