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Carburetor and metering device therefor
| Details |
Inventors: Krup, William R.;
Assignee:
Primary Examiner: Miles; Tim R.
Assistant Examiner:
Attorney, Agent or Firm: Senniger, Powers, Leavitt & Roedel
A metering device for a carburetor which permits liquid fuel flow in a primary fuel supply circuit to be adjusted without disassembly of the carburetor. The adjustable metering is accomplished prior to mixture of the liquid fuel with air in the metering device. The metering device is particularly constructed to achieve short and direct paths for transport of fuel to the air stream flowing through the carburetor to the manifold. A fuel bowl side bleed permits greater atomization of the fuel to produce higher percentage burn of the fuel. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, and in particular to FIG.
1, a four barrel carburetor (indicated generally at 10) of the present invention is shown as mounted on the manifold 12 of an engine, with an air intake and choke of the engine removed so that details of the carburetor construction can be seen.
The carburetor 10 includes a main body 14 defining four barrels (designated 16A-16D, respectively) through which air is conducted from the air intake and where gasoline is mixed with the air.
Each barrel services two cylinders (not shown) of the engine.
Booster venturis (designated 18A-18D) are mounted within each barrel 16A-16D to provide a greater vacuum for aspiration of fuel through a primary fuel supply circuit, to be described more fully below.
A fuel bowl and metering device (indicated generally at 20 and 22, respectively) are mounted on the front side of the main body 14 by bolts 23 received through the fuel bowl and metering device.
Another fuel bowl 20 and metering device 22 are mounted on the backside of the main body 14 by the bolts 23.
The metering devices 22 are substantially identical in the preferred embodiment, so that a description of one of the metering devices suffices for both.
The fuel bowls 20 (broadly, "fuel reservoirs") hold a quantity of liquid fuel which is metered through the metering devices 22 to the main body 14 of the carburetor.
The construction and operation of the carburetor 10, except for the metering device 22, is well known to those of skill in the art, being substantially identical to a Holly 4150 carburetor available from Holly Carburetor Division of Coltec Industries of Bowling Green, Ky.
Thus, the details of construction of the parts of the carburetor 10 other than the metering device 22 will be omitted.
However, it is to be understood that the metering block 22 of the present invention may be used in other carburetors and still fall within the scope of the present invention.
Referring now to FIGS.
2 and 5, the metering device 22 is shown to comprise a block, generally indicated at 24, which has been machined from solid aluminum
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Nonmetallic Processes 
