|Publication number||US2102113 A|
|Publication date||Dec 14, 1937|
|Filing date||Oct 24, 1935|
|Priority date||Oct 24, 1934|
|Publication number||US 2102113 A, US 2102113A, US-A-2102113, US2102113 A, US2102113A|
|Original Assignee||Djordjevitch Yesdimir|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (75), Classifications (12)|
|External Links: USPTO, USPTO Assignment, Espacenet|
ea. 14, 1937. Y Q JORDJEVITCH 2,102,113
CARBURE'TOR Filed Oct. 24, 1935 J 2 Sheets-Sheet 1 Dec. 14, .1937.
Y. DJORDJ EVITCH CARBURETOR Filed Oct. 24, 1935 2 Sheets-Sheet 2 25 motor, is laminated between Patented Dec.1-14, 1937 I umrso STATES PAT'EN'l" orrlcs wig le! I remain Dhrdi vitch, ram, France fll llnoaflolllnQgrtgrl" 24, 1935mm No. 46,620
The apparatuses generally used for atomizing in carburetors are designed and arranged in, a manner such that they provide the motor with a mixture made under conditions which are often unfavorable for obtaining the best efliciency of the motor. A
My invention has for its object a device which provides the motor with a mixture of air and fuel in proper proportions and which tends to prevent any condensation of the mixture in the principal admission pipe. 4
' To this end the atomizer is given a bellmouthed shape so as to produce an annular jet ,of mixture directed towards the crescent shaped 1 spaces left open by the throttle valve without impinging on the axis of said valve. Preferably the body of the atomizer terminates as a cupel ha 2 very thin edges and arranged in a vergent or Venturi-shaped pipe. This-cupel is w preferably immersed in thefuel and its edges are at a very small distance from the throttled part of this pipe and at the level thereof, whereby the primary air which serves for emulsifying the fuel under the action of the suction exerted by the the cupel edges and the throttled part and carries along with it towards the motor the fuel from the edges of the cupel.
H 1 IjhaVe shown by way of example in accompany- 3o ing drawings a certain number of forms of execution of my invention.
i Fig. 1 shows a carburetor'provided with atomizers of the'type disclosed by my invention, both 'in the main spray nozzle andin the idling spray J5 inozzle.
, ,Fig. 2 shows the invention as applied to a reversed or downfiow carburetor.
.Flg. 3- shows the application of my invention to idling means.
6 Figures 4 and 5 show the invention applied to a horizontal carburetor.
Figures 6 to 12 show different preferred forms which may be given to improved atomizer, Figs. 7a, 8a, 9a) 11a, being views from above of "the atomizers shown in elevation in Figs.- 7, 8,
9, and 11. The carburetor shown in Fig. 1-comprises a float chamber A, a suction pipe B and the throttle va ve C as usual; the atomizer I of the spray nozzle red by the channel D communicating with the float chamber through the calibrated plug V opens towards-its outlet end so as toform a cupel 2 with very thin edges and the axis of which coincides withthat of the central channel S of c the atomizer. This cupel is housed in a Venturidivergent, on-
theflow' of fuel in the co 0otober .24,' 1934 6 Claims. (Cl. 261-) shaped duct 6, whereby the cupel edges lie in the plane of the narrowest portion 4 of this duct and at .a very .small distance from the wall of this throttled portion of the venturi. The emulsifying air from the air inlet I communicating with 5 the passages 5 surrounding the lower part of the atomizer is laminated and slightly heated between the cupel and the throttled part 4 of the wall. This emulsifying air violently, sucked by the motor produces along the edges of the cupel 10 and in the recess thereofan increased depression, and at the same time it atomizes and carries along with it the fuel passing out of the cupel,.preferably immersed in the fuel, whereby the air and fuel form. a very intimate mixture which is projected along the walls of the duct 6 and the central portion of thethrottle valve receives sub stantially no mixture which would otherwise impinge uselessly on it. The emulsifying air may be either pure or already forced under pressure or sucked by the motor.
, The idling spray nozzle comprises a similar atomizer I; but the latter has the edges of its cupel l at the level where begins the convergent portion 8 of the duct 6' in which the atomizer 25 than in the idling spray nozzles used heretofore. so
As soon as thedepression in the motor begins increasing, the flow of emulsifying air surroundingthe idling cupel is braked outwardly by the divergent walls surrounding the cupel, whereby gressively braked. "Obviously ity is possible in a carburetor such as that shown, to' use only one atomizer of my improved type, the other'remaining or the conventional type.
' The application carburetors (Fig. 2 and horizontal carburetors (Figs. 4 and 5) together with the auxiliary means provided therefore is self explanatory from simple inspection of the figures. Another applica-' tion of the atomizer according to invention is that 45 of Fig. 3 wherein the idling atomizer 1 has its cupel arranged upside down in a duct 6' so as to allow the idling means to cease operation as soon as-th'e motor passes beyond a certain'speed or the depression in the duct where the atomizer stands, passes beyond a predetermined value. In effect, this arrangement causes the emulsifying air from the part l3 in the duct, and passing round the cupel of the atomizer, to first carry along with it the fuel in a normal manner; but
emulsified, hot or cold, 20
cupel is in its turn proof my invention to downflow 40 also be provided with a vertical notch in a diametrical plane passing through the axis of the throttle valve, whereby the mixture is projected towards the two crescent shaped parts uncovered by the throttle valve when it opens instead of towards the whole periphery of the duct as in the case of Fig. 1. This is the feature illustrated in side-and plan views in Figs. 7 and 7a inwhich the notch is. shown at ill. I may also form a larger number of notches and provide all or part of them, if required, with vibratory blades furthering the stirring of the mixture. Fig. 8 shows an atomizer the cupel of which is closed at 20 and shows only two semi-annular openings II which also project the mixture towards the crescent shaped parts uncovered by the throttle valve. These semi-annular openings are connected through the inner chamber I 2 with the central channel 3 of the atomizer. This arrangement is of particular advantage when applied to a main spray nozzle such as that of Fig. l for which it furthers the regular expansion and separation in two portions of the projected mixture. The same atomizer, as in all the modifications of my invention,- may be provided with a complementary air inlet of the type shown on Fig. 6. If required, part of the atomizer may be of a material different, chiefly as concerns conductibility, from the remainder of the atomizer.
Fig. 9 shows a modification of the atomizer according to which the cupel carries at a small distance above it, an auxiliary thin-walled cupel ll of suitable material provided with a central aperture i4 allowing communication between the space a provided between the two cupels and the upper chamber b closed by a cap l5, whereby the fuel is divided inside the cupel into two streams on either side of a diameter, said streams being shaped as a crescent or half-circle and passing out to either side of the auxiliary cupel. The securing of the cap and auxiliary cupel on to the main cupel is effected preferably along the diameter dividing these streams or else perpendicularly thereto as shown. v
Fig. 10 shows a modification according to which the cupel is bound by an oblique plane 11, whereby the fuel is directed substantially along lines perpendicular to the throttle valve, and the pri mary air is submitted to a lamination of varying degree according to the size of the cupel by reason oithe differentdistances between each side of the cupel and the wall of the duct containing the atomizer.
Fig. 11 shows a modification of the atomizer of Fig. 7 in which the diametral notch III of predetermined breadth and depth (or the hole or series of holes replacing said notch) is closed at the upper part of the cupel by means of a stationary or vibratory blade l6 which ensures the stirring of the mixture and gives it the desired direction. The blade may be laid flat as shown in Figure 11 or edgewise (Fig. 12). In the latter casethe blade is secured to a bridge-piece i8 at the upper end of the notch. I may also provide in place of, or in supplement to the diametrical notch, one or more notches at different points of the cupel and all,. or some of which, may, if required, be provided with blades.
I may also stretch across the cupel and substantially along a. diameter, a more or less thick wire adapted to further the separation of the mixture into two streams directed to either side of the throttle valve. This has been shown by way of example atl'l in Fig. 6.
Obviously, I may without extending the scope of the invention combine together certain arrangements illustrated in the diiferent figures, and also modify in any suitable manner, the shape, size and material of the parts of the atomizer, as well as the manner of incorporating same in'the apparatus requiring it.
'What I claim is:
1. In an internal combustion engine, the combination with fuel admission means including a fuel supply, a butterfly type throttle valve and a passageway arranged anteriorly to the throttle valve and showing a frusto-conical portion, of a fuel atomizer arranged in said passageway and comprising a channelled stem-and a solid cupshaped part integral with said stem into which the channel in the stem opens and the wall of which is substantially hemispherical and has a thickness which decreases progressively down to substantially zero between the stem and the outer edge of the cup shaped part, said outer edge lying moreover very near and substantially in the plane of the extremity of the frustoconical portion of the passageway and facing unobstructedly the location of the periphery of the throttle valve when closed.
2. In an internal combustion engine the combination with fuel admission means including a fuel supply, a butterfly type throttle valve and a passageway arranged anteriorly to the throttle valve and showing a frusto-conical portion, of a fuel atomizer arranged in said passageway and comprising a channelled stem and a solid cupshaped part integral with said stem into which the channel in the stem opens and the wall of which is substantially hemispherical and has a thickness which decreases progressively down to substantially zero between the stem and the outer edge of the cup shaped part, said outer edge lying moreover very near and substantially in the plane of the extremity of the frustoconical portion of the passageway and facing unobstructedly the location of the periphery of the throttle valve when closed, a cover for the cup-shaped part leaving two semi-annular openings between it and the outer edge of said part, said openings facing the location of the periphery of the throttle valve when closed to either sideof the pivoting axis of said valve.
3. In an internal combustion engine the combination with fuel admission means including a fuel supply, a butterfly type throttle valve and a passageway arranged anteriorly of the throttle valve and showing a frusto-conical portion, of a fuel atomizer arranged in said passageway and comprising a channeled stem and a solid cupshaped part integral with said stem into which the channel in the stem opens and the wall of which is substantially hemispherical and has a thickness which decreases progressively down to substantially zero between the stem and the outer edge of the cup shaped part, said outer edge lying moreover very near and substantially in the plane of the extremity of the frustoconical portion of the passageway and facing unobstructedly the location of the periphery oi the throttle valve 76 when closed, to the plane of which periphery d 5. In an internal combustion engine as claimedthe closed valve the plane containing said outer in claim 1, the provision o! notches at two points edge is substantially parallel, a cover ior the cupof the outer edge of the cup-shaped part facing shaped part leaving two semi-annular openings, the extremities of the axis round which the between it and the outer edge oi said part, said throttle valve is adapted to pivot, and a vibra- 5 openings facing the location oi the periphery oi toi'y member passing through said notches. the throttle valve when closed to either side oi i 6. In an internal combustion engine as claimed the pivoting axis of said. valve. 1 v in claim 1, the provision of an elongated member 4. In an internal combustion engine as claimed stretched across the cup-shaped part in parallel-, in claim 1, the provision of notches at two points ism with the pivoting diameter of the throttle 10 of theouter edge of the cup-shaped part facing valve.
the extremities of the axis round which the throte v YESDIMIR DJORDJEVI'ICH.
tl'e valve is adapted to pivot.
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|U.S. Classification||261/65, 261/DIG.390, 261/78.1, 261/121.3, 261/41.5|
|International Classification||F02M3/10, F02M19/03|
|Cooperative Classification||Y10S261/39, F02M3/10, F02M19/03|
|European Classification||F02M3/10, F02M19/03|