US1197227A - Carbureter. - Google Patents

Description

F. MO'Y'SE.

CARBURETER. 1 APPLICATION FILED F(EB. 26. 1913..

Patented Sept. 5, 1916.

B w w 1 f Il|l|l 1m IM H C till!! M F. MeYsE.

CARBURETER. APPLICATION F'ILED FEB. 2'6, 1913.

' Patented Sept. 5,1916

' 2 SHEETS-SHEET 2.

M /m eeee e 1 l @we e 3 In E w y L l uw u Wifnmses rnanclsiivio'sn, oF ranrsrnancn, Assrenon To oHAnLEs HENRI cLAUinL, or

LEVALLOIS-PERRET', FRANCE.

CARBURETER.

linvented certain new'and useful Improvements in Carbureters for ExplosiveEngi nes, of which the vfollowing 1sa specification.

This 1nvent1on relates to carbureters,-particularly those for use with internal combus-l tion enginesgfand its principal object is to rprovide means for accurately regulating andv controlling both the quantity and quality of combustible mixture supplied to such an enginei v 4 According to the present invention, a fuel jet nozzle is disposed axially within an air conduit controlled by an oscillatable `valve member having a passage into which said jet nozzle projects.` The openings or ports at the ends of said passage are arranged to be simultaneously variable in sizeA as requirements demand, to govern the flow of air through the passage; and theyalVeparts so arranged that for all sizes of such ar openings Vor ports, a line connecting their` centers is always substantially coincident with theaxis of said conduit, and hence, also, with that of said jet nozzle. Moreover, the particular construction of the jet nozzle,

more fully hereinafter to be disclosed, is such' 'as to give, especially when in combination with the general arrangementof'parts above described, certain new and hitherto unattainable results in accurate control 'of the carbureting operation.

For the purpose of ance with the invention, showing the device for operating the plug.r 2 is a plan view of the carbureter partly sectioned on line A-A (Fig. 1), the double plug not being sectioned. Fig. 3 is a section on line B-B (Fig. 2) showing the arrangement of the fdouble plug and of the nozzle. Fig. 4

at so, so. Insideof the valve body or conduit 1 osis asection of the nozzle on a larger scale.

cillates a sleeve or hollow outer plug 2 provided with two portsa, b correspondingA respectively to the opening a for the suction of air and to the opening b for the outlet Specification o f Letters Patent.

afordingaclear understanding of the principles of the inven-v Patented Sept. 5, 1916..

Appiieatin med February ze, 1913. seal No'. 750,865.

0 "of the combustible gaseous mixture from Moisn, a citithe 'valve body. Withinl this hollow outer plug is revolubly disposed another plugv which 1s of the usual type i. e. provided only with a port c. rlhe two plugs can be made to move one within the other in contrary dlrections simultaneously by-means of theI operating device shown. in Figil. Upon the Journals 4, 5 of the oscillating plugs' are lxedly. mounted leversv 6, -7 connected by means of links 8, 9, at point 10, with a lever which may be oscillated around a fixed point 11 by means of an operating handle. Fig. 1 shows two diiierent Apositions of the device, one in full lines, the other in dotted lines. It will be readily `understood that one single motion of the operating handle will result 1n two contrary rotating motions of the plugs 2,'8' by means of the links 8, 9 and of the levers 6, 7.

Theports a, b, @provided in the plugs 2, 3 may be of any suitable forms. As a matter ofcourse the edges of the bottom lopening c and of the corresponding -port a are so contoured that after completion of the closing motion, a suliicient free'a'rea is leftv ture. The nozzle 12 is shown as lying substanti'ally in the axis ofthe valve body and The nozzle 12 is in communication wlth the constant level fuel chamber 14 Vby means of a conduit 15 opening into the upper part of the receptacle 14 with the double purpose of heating the oil on its way to the Carburation chamber and of preventing impurities from being drawn .with the oil Ato the nozzle. The aforesaid heating is not absolutely necessary but may be attained'by circulation of hot water or of exhaust gases Fig. 4 is a section of the nozzle on a vlarger scale. The vertical fuel supply tube v12 1s provided near its top with a partition loriliced as at 17, and the tube extends upwardly a short distance beyond this parti s therefore parallelto the course of air passing therethrough.

tion in the'form of a cylindrical part 12 which flares outwardly at its upper end to 4 `form-a conical cup portion 13 provided with orifices v18, 18. Said conical portion 13 may have depending therefrom ran outer cylindrical wall spaced away from tube 12 and forming therewith an outer annular chain- A. ber 19. On the cone 13 is located a coven20 provided inits center with the jet orifice proper, saidcover-being maintained in position by means `of`an outer tube 22, whose upper edges may be' bent inwardly to' rest upon the cover, as shown. A smaller chamber or space .A is thus formed immediately 'above the portion 12l of the fuel supply r tube, the purpose of which will presently ap pear. This tube 22 extends downwardly, forming a kind 'of envelop or skirt whose lower edge 23 is adjacent a coiistricted portion of the passage throughfthe valve body,

' that is, adjacent a locality where the air curfrom the foregoing description.

rent hasits greatest velocity. It will be seen that the envelop 22 serves to inclose a downward extension of annular space 19. It may be noted that' the fuel level L is somewhat higher than the orifice 17 in order to insure a fuel-.reserve for re-starting the engine.

The operationvof the apparatus is clear- Air is aspirated throughl the hollow valve body lby the engine to which the carbureter lis attached, the'cou'rse of the Aair currents bey ing indicated-by thefull arrows. The air travels parallel to thenozzlefboth outside ofthe sleeve or envelop 22 and also through the annularspace 19; and the smewhat diminished pressure resulting from the air flow induces flow of liquid fuel from the jet nozzle, such fuel being vaporized byand mixing` with the .airopassing to the engine. In 'the absence ofspecial preventive means, higher velocity of air currents would produce'still lower pressures on the 4fuel in 12';

- and hence at," higher engine speeds greater quantities of fuel would be induced to flowv fromtl'ie jet nozzle.A But such a result is the following manner: At high speedsg'the well'known to be undesirable; since leanerl combustible ,mixtures are ordinarily required lat higher. speeds. j In lthe arrangement herein disclosed, the fuel feedis automatically regulated by the flow of air in swiftly fiowing current of`-`airpassing into the annular space 19 is. checked to some-'extent by the walls of thel conical cup 'at the upper end vof the space and a' certaindynamic excess pressure is therebycreated 'in thefchamber'which is'communica'tedthrou h .18 causes streams of air passing there` orifices 18 to chamber-A above the fuel in 12'.. The oblique' disposition of the channels through to baffle, and this may aid in producing aslight plenum in A, as well-as in securing a very intimate mixture of air and fuel. This excess pressure in chamberAA rpartly opposes passage 'of liquid through orifice 17 into chamber A; and as the pressure increases withthe speed of the engine, the carbureting, which tends to be. too great at high speeds, is automatically con a trolled and kept within proper limits.

adjustment of the velocity and amountpof the air current passing inside and outsidel of the cylindrical mantle 22, and this, in turn, affects the pressure in chamber A in the manner before described. The parallelograin device shownin Fig. v1 for operating the compound valve permits of varying the effective area of the valve passage approximately in roportion to the movement of the operating handle, which affords accurate regulation` for all intermediate en-l gine speeds.

What'I claim is:

ll. 'In a carbureter, .the combination, with a conduit, and a fuel supply tube arranged therein, of a nozzle fed by said supply tube .and comprising a fuel cup having a cover v\provided with a discharge outlet opening intosaid conduit, a sleeve extending rearwardly from said cup and surrounding but spaced away from said tube to form an annular space 'opening rearwardly into said conduit, and passages throughthe walls of Isaid cup whereby air travelingforwardly through said annular spacemay pass into the fuel cup and thence to the discharge outlet.l

2. In a Vcarbureter', the combination with a conduit and a fuel supply tube'disposed therein and substantially'fparallel to 'the axis thereof, ofa 4walled. chamber having an outlet to said conduit andl'arranged to receive fuel from said'tube, anda hollow cylindrical member .surrounding a" part of theV tube and forming therewithan annular space, open at the rear'end to said conduit and communicating at the other'end with said chamber.

3. In a carbureter, the combination with therein and substantially arallel to the axis thereof, of a walled cham er having an out# let tosaidconduit and arranged to receive fuel from said tube, and a hollow cylindrical member surrounding a part. of the tube and forming therewith an `annular space open at the rear end to said conduit and communicating at the other end `with said chamber conduit and a fuel supply tube disposed' through angularly disposed passages converging intosaid chamber and arranged to deliver baffling jets therewithin.

4. In a carbureter, the combinationwith a conduit and a fuel supply tube disposed therein and'substantially parallel to the axis thereof, of a walled chamber having an govern flow of fluid in the conduit, said` valve member having a pa-ssage or channelextending therethrough, a fuel supply tube projecting into said passage and substantially parallel to thedirection of fluid flow, of a walled chamber having an outlet to said conduit and arranged to receive fuel vfrom said tube, a cylindrical envelop surround-` ing the projecting portion of said supply tube and forming therewith an annular space communicating at` its forward end with said\chamber and open to the conduit at the other end, and means for operating rearwardly', or against the directionof'fl said valve member to vary lthe effective size of said passage.

-6. In a carbureter, the combination, with a conduit, of la pair of valve plugs having coperating passages forming a channel of variable inlet and outlet governing flow through. said conduit, a fuel supply tube.

entering the channel in said valve plugs and y arranged substantially'parallel to the direc! tion of flow through the conduit, apressure chambenat l, the endpfsaid supply tube within said channel, a sleeve orenvel'op surrounding said supply tube andfo'rming therewith an annular chamber which communicates through suitable passages with saidpressure/chamberg said sleeve extend-` ing from a point adjacent saidchamber in the conduit to a 'point .adjacentl j stricted portion of the `conduit and; ein'g open at this end, and means for operating said valve plugs simultaneously tolvary thef inlet and outlet of said channel. I

In testimony Whereof, I have hereunto subscribed my name this eighteenth day of February, 1913.

FRANcisMoYsE.

Witnesses: h

GEORGES Ro'r'rn, v HANsoN C. Golm. f

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