US1310426A - Paiem - Google Patents

Description

v E. J. MANNING.

CARBURETER.

APPLICATION flLED DEC.26,1914.

Patented July 22, 1919.

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" N avwemto'a Elttomuz E. J. MANNING.

CARBURETER.

APPLICATION FILED DEC.26. 1914. 1,310,426. Patented July 22,1919.

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ELMER r. MANNING, or anmsvrmm, wrscoirsm.

CABBUBETER.

Specification of Letters Patent.

Application filed December 26, 1914. serial No. $588,993.

To all whom it may concern;

Be it known that I, ELMER J. MANNING, a

- citizen of the United States, residing at .of liquid hydrocarbon or of condensed hy- Janesville, county of Rock, and State of Wisconsin, have invented new and useful" lmprovements in Carbureters, of which the following is a specification.

The object of my invention is to provide means for 'reatomizing the liquid which tends to accumulate in the pipe or manifold between the main .carbureting or mixing. chamber. It is well known that quantities drocarbon, or even of water carried 'by the hydrocarbon, tend to collect along the suc-v tion pipe or manifold of the engine under certain conditions and gradually accumulate at the lower end in sufficient quantity to seriously interfere at times with the proper action of the carbureter. 'Mv invention contemplates collecting such liquid in' an auxiliary receiver provided with means for atomizing such liquid, preferably during the intervals when the throttle valve is w olly or partially closed.

In the drawings Figure 1 is a slde elevation of one form of carburetei' embodying my invention.

Fig. 2 is a detail sectional View, drawn on line a2a2 of Fig. 1.

Fig. 3 is a detail view of the auxiliary.

atomizer as seen from the inner end.

Fig. 4 isa side view of another form of carbureter embodying my invention in a. modified form suited to the requirements of the carbureter to which it is applied.

Fig. 5 is a detail sectional view of the modified atomizer employed in the carbureter shown in Fig. 4.

Fig. 6 is a view of the same as seen from the inner end. i

Like parts are identified by the same reference characters throughout the several views.

The carburetor shown in Fig. 1 is provided with an ordinary float chamber A, an air in- 'let at Bv communicating with a carbureting lever Gr. All of these parts may be ofany ordinary typeand require no detailed descrlption.

The pipe E is adapted. to communicate with the cylinderof the'engine or with a ron.

Patented July 22, filth.

manifold connection to aset of cylinders. I

Near its lower end this pipeis provided with an interior shoulder H, having a, channel I at its upper surface; Immediately below the tube L extends into the plug from its inner end, and the extremity of' the tube within .the plug'is 'bent downwardly, as shown at L.- Thisnozzle tube is open at both ends and the downwardly bent extremity therefore constitutes an inlet for the nozzle, when suction is applied at theother end to withdraw liquid from the cavity J. i

An airv blast tube M extends inwardly through the plug from its outer end, and the inner extremity isbent upwardly at M to a position adapted to direct the blast of air across the inner end of the nozzle tube L. The outer end of the tube M communicates with the external atmosphere, and the hollow plug-ll with the nozzle tube L and blast tube M, constitute an atomizer adapted for operation when a partialvacuum exists in thepipe E. This atomizer may operate to and an effective blast of air will therefore be delivered throu h the blast tube M. The air .blast crosses t e inner extremity of the nozzle tube L andtherefore not only increases the suctionthrough said nozzle tube.

but also breaks up or atomizes the stream of discharging liquid.

With the construction above described, all liquid accumulating or condensin upontlie walls of the pipe Eabove the shoulider'l L-may be collected in the channel ll and'delivered to the reservoir plug or plug cavity J, from which it will be discharged and re-atoinized as above described. It sometimes happens, however, that quantities of liquid will accumulate in the lower portion of the passage C, either by reason of condensation or on ac-. .count of a too rapid discharge of liquid h drocarbonthrough the fuel nozzle D. l tli erefore provide a suction'duct N in thefdini of-a by pass duct'leading from the lower part of the passage C upwardly to the plug cavity J. This bypass duct or pipe N, therefore, afiords a means of com- .munication across the throttle valve F, so

that when the throttle valve is closed or nearly closed, the suction of the engine piston will be extended through the by pass .and exerted upon the liquid in the lower part of the passage C, withdrawing the liquid from such passage and delivering it through the atomizer nozzle L. In this manner thesurplus liquid in the carbureter or its connecting ducts may be withdrawn,

. atomized and delivered to the engine whlle the latter is throttled. The quantity being small and the quantity of air being also.

small, a combustible mixture will be obtained, which will be delivered to the engine amount thus retained being, of course, lim-- ited. But the amount of liquid which I'IIDS down into this portion of the passage is also limited, and occurring almost entirely when the engine is first throttled, and before the flow of hydrocarbon has adjusted itself to the throttled condition. It is well understood that when the engine is running rapidly the flow of hydrocarbon is substantially continuous, and this causes an excess discharge immediately following the closing movement of the throttle valve. This discharge will be caught by the strong suction exerted through the pipe N, and drawn upwardly through said pipe, as above explained.

My invention, in the form illustrated in Figs. 1, 2 and 3, is adapted to be applied to a carbureter having a vertically extending outlet, or a conducting pipe which extends upwardly from the throttle valve casing. It

' frequently happens, however, that this pipe or duct extends in a substantially horizontal direction from the carbureter or from the throttle valve casing, as is the case with the pipe 3 illustrated in connectlon with the carbureter shown in' Fig. 4. In this carbureter, the parts corresponding with those shown in Fig. 1, are given the same refer-' ence letters with the exception that small case letters are employed for the re-at0mizing device. v In this .con'structlon, an aumllary atomizer, comprising a hollow plug 3? is employed.

This plug is adapted be screwed vertiside'of the pipe e, the cavity j constituting a cup shaped cavity or depression in the bot- .tom of the pipe e into which liquid may cally into an aperture formed in the under charged from the bottom of the cup, and. the pipe m is the air blast pipe corresponding with the pipe M in Fig. 1 and similarly discharging across the dischar e end of the nozzle 1. Owing to the fact t at the plug extends vertically, it is not necessary that the pipe l should be bent or elbowed at the extremity within the cavity 7', since the lower end of the nozzle I will be immersed in the liquid'whenever the latter accumulates to any considerable depth. The operation of this atomizer is the same as that illustrated in Fig. 1, but it is not necessary to provide a by pass around the throttle valve, for the reason that in this type of 'carbureters any liquid accumulating in the air passages will flow to and be received in the cavity 7" of the atomizer plug.

I claim l. A carbureter, including a receiver for condensed liquid, in combination with a nozzle tube, an'air blast tube adapted to direct a blast of air across the outlet of the nozzle .tube, said nozzle tube having its inlet end in the lower part of said receiver, and a by pass tube leading to said receiver, said recelver being adapted for connection with the charging duct of an internal combustion engine and said by pass tube being adapted to connect said receiver with-said charging duct at a pointdistant from the receiver, said receiver being adapted to receive liquid hydrocarbon from diderent points in said charging duct but on opposite sides of a throttle valve therein, substantially as described.

2. The combination with a carbureter,='of a valved outlet'duct adapted tocommunicate between the carbureter and the cylinder of an internal combustion engine, independent means for delivering liquid collecting in said outlet duct between the carbureter and the valve to a point in said duct beyond the valve, and means for atomizing the liquid '50 delivered, said atomizin'g. means being also adapted to atomize liquid collecting in said duct on the side of the valve opposite that occupied by the carb'ureter.

In testimony whereof I afix my signature in the presence of two witnesses.

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