US2064693A - Fuel vapor and air mixer - Google Patents

Description

Dec. 15, 1936. w. e. SHAVER E1- AL; 2,064,693

I FUEL VAPOR AND AIR MIXER Filed Nov. 1, 1934 I/d/zer 61 5/74V6l Jo/m '6 Farmer INVENTORS ATTORNEY Patented Dec. 15, 1936 UNITED STATES FUEL VAPOR AND AIR MIXER Walter G. Shaver, Bellerose Manor, and John G.

Farner, Elmont, N. Y.v ll

Application November 1, 1934, Serial No. 751,054 x 2 Claims.

This invention relates to combustion fuel vapor and air mixers and more particularly to auxiliary devices operating in conjunction with the carburetor of internal combustion engines.

It is the primary object of our invention to provide a carburetor supplementary device by which the more thorough and economical vaporization of the combustion fuel will be effected.

A further object of our invention is to provide in a device of the character described a simple and rugged construction which permits of the convenient attachment of same to an internal combustion engines carburetion system.

A more specific object of our invention is to provide an auxiliary device for attachment onto a carburetor by which air is injected into the va-' porized fuel stream to reflect the more efficient and economical operation of the combustion engine in various atmospheric conditions.

The invention will be fully and comprehensively understood from a consideration of the following detailed description when read in connection with the accompanying drawing which forms part of the application, with the understanding, however, that the improvement is capable of extended application and is not confined to the exact showing of the drawing nor to the precise construction described and, therefore, such changes and modifications may be made therein as do not affect the spirit of the invention nor exceed the scope thereof as expressed in the appended claims.

In the drawing:

Fig. 1 is a perspective view illustrating the application of our device in the carburetion system of an engine.

Fig. 2 is a top elevational view of our device.

Fig. 3 is a central sectional view on line 3-3 of Fig. 2; and

Fig. 4 is a transverse sectional view on line 44 of Fig. 2.

Referring now to the drawing for a more detailed description thereof, the numeral 5 indicates in general our auxiliary gas vaporizer which in outline resembles the usual gasket and is therefore adapted to be installed as illustrated in Fig. 1 between the fianges connecting the carburetor to the manifold. In this figure the numeral 6 indicates the carburetor or similar device for vaporizing the combustion fuel which is connected thru our auxiliary device 5 to the usual intake manifold l by which the vaporized fuel is delivered to the respective cylinders of an internal combustion engine, not shown.

Our auxiliary mixing device 5 comprises a center ring 8'; the ends'of'which form shoulders 9 to facilitate the placement of a pair of plates H! on same, the outer surface of plates lllbeing fiush with the endsof the ring 8. The outline of'plates i is in confo'rmity to the shape of the connectingfianges of the carburetor 6 and the manifold l. A spacer member II, also conforming in outline to the plates I0, and disposed between same to hold the plates H) in parallelism with each other, is provided. The members 8, IE! and El are securely held together by a pair of ferrules l2, the ends of which are flanged over against plates ill. The ferrules [2 form bolt holes and are so disposed as to permit the insertion of the fastening bolts l3 in Fig. 1 thru same. The spacer memher I! is provided with a centrally disposed aperature Hi of a larger diameter than the periphery of center ring 8 by which to formbetween the plates In an annular chamber l entirely surrounding the center ring, 8. The chamber l5 communicates to the periphery of the spacer member H thru an aperture I6 formed in same. A plurality of jets I! are provided in the annular wall of center ring 8 by which the chamber 15 communicates at various points to the interior of the center ring 8. The jets l1 comprise small apertures terminating on the interior of center ring 8 and disposed radially in same and are counterbored at their ends which terminate in the chamber l5. It will be noted from Figs. 3 and 4 that there are two sets or circular series of jets I1, one set being above the other, and that the jets of each set are staggered relative to the jets of the other set. We have found that by providing a plurality of sets or series of jets, one above or beyond'the other, better results are obtained, and still better results are had by staggering the jets of the different series.

In the operation of our device the carburetor 6 functions as usual by the suction or vacuum created in the intake manifold 1 by the operation of the internal combustion engine. The vaporized fuel issuing from the carburetor passes up thru our auxiliary vaporizer device 5. The suction created in the manifold 1 causes air to be injected into the aperture I6, thru the chamber [5, and thence into the vaporized fuel stream via the jets I! which are so disposed in the periphery of the ring 8 as to inject the atmospheric air transversely of the fuel stream at an appreciable velocity due to the comparative size of the jets IT. This velocity effects a turbulent action of.

the fuel stream, thus causing a complete mixture of the injected-air with same. The atmospheric air circulating thru the chamber I5 is preheated by its contact with the walls of the chamber, the latter being heated by conduction from parts of the motor operating under higher temperatures. In this manner the more economical and efficient operation of an internal combustion engine is effected by causing a more lean fuel mixture to be delivered to the engine than is otherwise possible with the usual carburetor.

Extensive experiments on the device as just described have been carried out in practice on a number of gasoline propelled cars of various makes. The results have demonstrated conclusively that our auxiliary vaporizer efiects substantial economies in the consumption of fuel.

We have found that, by using the device of our invention, there is less deposition of carbon and that what carbon is deposited is in relatively loose condition and not hard, as usual, so that it is earily removed.

What is claimed as new is:

1. A fuel vapor and air mixer of the character described, comprising a central ring having shoulder portions formed therein, a pair of plates positioned within said shoulder portions and lying flush with the ends of said ring, a spacer member interposed between said pair of plates and having a centrally disposed aperture to provide an annular chamber, means for admitting atmospheric air to said chamber, said annular chamber being provided with a plurality of ports and arranged in at least two vertically-spaced planes, said ports in any one plane being diametrically opposite and reduced in size to a jet for delivering atmospheric air into the mixture chamber.

2. A fuel vapor and air mixer of the character described, comprising a central ring having means for supporting a pair of plates therein adapted to lie flush with the ends of said ring, a spacer member interposed between said pair of plates and having a centrally disposed aperture to provide an annular chamber, said ring being provided with a plurality of ports communicating with said central chamber, said ports being in staggered relation in respect to a horizontal plane and reduced in size to a jet for delivering air into a mixture chamber.

WALTER G. SHAVER. JOHN C. FARNER.

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