US1895785A - Carburetor - Google Patents

Description

Jan. 31, 1933. C, H, CLAUDEL 1,895,785

CARBURETOR Original Filed Nov. 9, 1928 5 Sheets-Sheet l Jan, 31,1933. ci H, CLAUDEL 17,895,785V

' CARBUBETOR Original Filed Nov. 9, 1928 5 Sheets-Sheet 2v fig. 4

/N VE /V TOE" Char/6s H6 Claaa/e/ l Jan. 31, 1933. c. H. CLAUDEL 1,895,785

CARBURETOR Original Filed Nov. 9, 1928 5 Sheets-Sheet 3 #9 C E 6p .t c I ll WVM/7W# Char/es Hen C/m/ae/ van. 31, 1933.

C. H. CLAUDEL CARBURETOR Original Filed Nov. 9, 1928 ffy. 7

"5 Sheets-Sheet 4 C. H, CLAUDEL Jan. 31, 1933.

CARBURETOR Original Filed Nov. 9, 1928 5 Sheets-heet 5 .59 said valve.

Patented `lan. 3l, 1933 UNITED STATES PATENT OFFICE CHARLEs HENRI CLAUDEL, or VEUXHAULLES, `FRANCE, AssIeNoR l11o SOCIETE ANONYME LA COOPERATION AGRICOLE a INDUSTRIELLE, vEUxHAULLEs, FRANCE CARBURETCR .Application illed November 9, 1928, Serial No. 318,156, and in France March November 3, 1932.

The present invention relates to improvements in carburetors, and it has for its object the better adaptation of such apparatusto the various operating conditions in which they are used.

The invention is characterized firstly by the fact that the carburetor comprises, in combination with the calibrated plug for slow speed supplying the corresponding nozzle which operates in the known manner for the slow or reduced speed and running light, two other calibrated plugs, whereof one is employed for the high speeds (on level) and supplies the 'gas-mixture or emulsion cham ber communicating directly with the orifices for the normal feed of the said emulsion in the known manner, and the second is employed for the slow speeds (on grades) and supplies another chamber which is separated from the precedingby smallV holes and 1s hence, subjected to a less suction or vacuum than that prevailing in the first chamber. In the known Claudel arrangement of the emulsion-producing device, the separate chamber operating for slow speeds will advantageously consist of an annular chamber surrounding the diffusing tube. y

The aforesaid combination can be obtained with any arrangement of the reduced speed nozzle, and chiefly a flexible nozzle whose y free end is movable with the throttle of the mixture towards the engine. Y

Accordingto the invention, I prefer t0 use a throttle of thebutterfly type having a special form, such that in its position adjacent the outlet of the reduced speed nozzle, the opening of the butterfly valve increases more rapidly thanV the opening for the air at the periphery of said valve, so that the output of said reduced speed nozzle will be increased and .the passing pointlcan be eliminated while providing for a simple 'construc-v tion of the valve device. e Y p Another feature of the invention consists in the use, in combination with the said valve,

of an extended part of the central reducedV speed nozzle, which instead of being flexible,

' is rigid, and supplies the emulsion upon the side of the suction conduit, in aslotofthe 31,1928. Renewed The accompanying-drawings show by way i i of example variousv Vembodiments of the invention comprising a certain number of carburetors to which my said improvements areV applied.

Figs. l to 5 show a vertical carburetor in whiclithe Ithree calibrated plugs are' disposed at the bottom of the float chamber.. Fig l.

is a plan View, Figs. 2, 3 andr are cross sectipns respectively through lines "II-II, line IiI 1II-I I, 1ine ivhiv-II 0f Fig. i.

coV

^ Fig. 5'is Va horizontal section through line V-V of Fig. 2 showing the specialthrottle f valve used in cooperation with thereduced speed calibrated plug. Y i .1 Fig. 6 shows in vertical cross section a vertical carburetor, with another arrangement of the calibrated plugs. l 1 l vFig.` 7 shows in the same manner another arrangement' of the three calibrated plugs and a contrary' arrangement of the throttle valve. Figs. Sand 9 show an application of the invention to a horizontal carburetor, Fig. 8 is a vertical section on the-axis of the set of emulsion delivery nozzles, and Fig. 9 shows on a larger scale and with' a little modiication a cross sectionon line IX-IX of Fig. 8.

J Figs. 10 to l5 show another construction in which the` various calibratedplugs can be removed withlgreat facility.- Fig. 10 is an-elevational vievvof thecarburetor, on the side next the reduced speed calibratedplug. Fig.

ll is a horizontal' section on the line XL-XI y of Fig. l0. Fig; l2 is a partial section on the lineXIl-XII of Fig.l l0. Figs.` 13` and 14: are vertical sections respectively .on thelines diffusing tube '3 is of the known ClaudeltypeV and has three vertically spaced holes .t t #V 1.00

etc. The guard tube 4 'and the outer tube 5 Ywith air inlet holes a lare also employed.v

rigid extension tube 7 tothe discharge point which is adjacent the edge of the throttle valve. The diffusing tube 3- is situated .be-l tween the guard tubes Zand 4, and forms'two chambers with theV latter, comprising the in'' ternal chamber Cp in direct connection with the orifices 8 for the dischargel of the emul- 1 Y. in order to form. a: smallk groove or slotco- 1 operating with the tube 7 in the full open sion ,at-:normal speed, and the external cham-A ber Cc separated from ythe first by theholes t t tf etc. Y. of the diffusing tube and communicating with the admission orifice` a of the air for the emulsion, so thatat-normal speed thesuction or vacuumvin the' external Y chamber Cc is less than in the internal chamber Cp.

Thevthreelcali'brated plugs Gr, or reduced j speed calibrated plug, Grc or slow-speed calibrated plug',-'and GH,V or normal calibrated plug, are. disposed in the bottom of the float chamber. The calibrated plug G; communi- Cates directly with Ithe reduced speed' nozzle lby means of the duct9- (Fig. 12)'. The calibrated 'plugfGp commu'nicatesthrough the duct 101 (.and optionally'through the cham-y ber Cp disposedbetween' Qf'and 3) with the in# ternal chamber Cp (Fig. 3).` The calibrated plugGrcVv communicates through theduct 11 with the external chamber Ccf(Fig`. 4)

" The throttle valve vismounted on the axle 13 and has aV-special shape which is 4 obtained by the pressing process.` On' the side 'at which it cooperates with the tube Pextending YIthereduced speed nozzle, it 'comprises a bent part`14 which is adapted to thel inclination of thetube7 and forms a'slot or trough 15 in whichthe tube '7 is disposed in the closed po'- sitiono-f the'throttlevalve.v The edge 14"'of wof thesaid valve.y Since the valve yopens the throttle'which controls the action of the suctionor vacuum` upon the reduced speed nozzle is situated above the principalplane according to tlie'arrow f (Fig. V3), thedevice i'smorerapidly'openedat thepoint 14 than at the opposite point 16 and'ontheremainder of the periphery of the valve.' When the valve begins tofopemthe cross section opened v atfl4 A through which theenginesuction acts willrincrease more rapidly than the cross sectionon the remainder ofthe periphery'of the valve (and chieiiy in the part which is diametrically opposite the point 16) through which the'principal supply of airis withv drawn?through'the said valve.V f In rthis man: ner the output ofthe reduced speed calibrated }')li ig"fwillv be lincreasedbeiore the normal speed Vorifices `8 Ycommence to act, and the "pas'singfpointf7` that is, the bend in the curve of the output, between,` the reduced speed '.funetionigandthe normal functioning, will th usi bey eliminated-.Q The 'great importance of this special form of the throttle valve will be thus observed. i

I may also invert the arrangement, as shown for example in Fig.l 7, and herein, instead of,V disposing the point 14 above the point is placed below the same, andtheA valve opens in the other direction .as shown bythe arr'owf.fV`v

" As shown Figs.v`2,"3' and 4, I'v give to the part of the valve which is diametrically opposite the point 14', a certain pressed shape the throttle valve,`thus opening' byVv means of the small flow section 14 (slot 14 Fig. 5) VThe secondary air supplied throughV the conduit 19-regulatedby a screw 20 (Fig. is mingled with the' emulsion supplied through 7, so that the engine will'rotate atslow speed.

(lug.- 2) the.

l/ Vhen the valve commences to open, the .dis-Y charge from the reducedspe'ed sprayer will be increased, as above specified, and this assures the continuityl at-the passing point,.in

normaloperation. Y l

Y When the said valve is opened (Figs. 3 and 4) the suctionacts upon the orifices 8 and is transmitted'in the first placeto the internal chambery Cp-CQ, and it; proceeds'gthence through the holessuchas v25 ty t to the external Cc, in .which the suction-is thus reduced. The slow speedcalibrated plug Grc which serves toa'ssure through-the chamber CC thelateral supply of the chamber@D through the spaced holes such as 't t t will thus act chiefly by the height of the liquid thefloat chamber' l,

above the said holes. At the slow speed rate (Fig. 3) and also fat -the'high speed rate (Fig. 4), the aii` correcting theemulsion is supplied by the chamberA C., to which the.V air is'delivered through af under the'controlof suitable means such asacock (Figf4)A oran automatic: valve (Fig, 3).- i

Fig,l 6 shows theiinven'tion as appliedto a carburetor vofthe type specified 4in my patent applicationSr. No. 7 55,296 of the 11th cf December'1924 which matured to Patent v1,761,007 granted January, 1930 ycomprising a nozzle device mounted on; afremovable connecting member J, disposedbetween the float brated is disposedoutsidethefloat chamber andissupplied by a channell21open ing at a pointabove the bottom of v'the said chamber andthe main body of the carburetor. i

70 principal-plane aar-m ofthe valve, the said p chamber. The lateral calibrated plug Ge remains at the bottom of the chamber, or is mounted in a boss 22 in the bottom lof said chamber, and as before, it is connected by a conduit 11 with the Vemulsion chamber Cc. The normal speed calibrated plug Grp is mounted on a tube 23 vwhich traverses the cover of the float chamber and is screwed at 24 into the boss `22. The internal duct 25 of said tube supplies the primary air of the emulsion, and the section of the atmospheric communication Amay be modified by the substitution of other members for the calibrated member 26. g

.Fig 7 shows a modification of a carburetor of the said removable type. Herein the three sprayers are mounted on the nozzle device itself, so that the connecting ymember J comprises only a single duct 27 for the supply of the fuel to the said sprayers. The internal guard tube 2 is eliminated, and the members 28-29 carry the different concentric tubes'of the nozzle device. The said members are screwed together atj30 and carry the several sprayers in a direct manner, being pierced with the necessary. ducts connecting said sprayers with the nozzles of the corresponding annular chambers. It will be observed that in said modification the valve is inverted, and that the nozzle device is surrounded by an air corrector under manual control.

Figs. 8 to 9 show'my invention applied to a horizontal carburetor. rlfhe reduced speed calibrated plug Gr supplies fuel to a separate emulsion tube 1 which receives the primary air for the emulsion through the tube 6 and the secondary air in an adjustable manner through the channel 31 provided withv the regulating screw 32. The said tube delivers its emulsion through the orifices 33 and the channel 34 to a nozzle 35, extended by a flexible tube, 36 cooperating with the valve 12 in the completely closed position ofthe valve. The emulsion proceeds forwardly of the valve through a small branch 37 adjustable b a screw 38. The normal calibrated plug p is connected through the tube 39 and its orifices 40 with the chamber Cp which is directly connected with the annular chamber H (Fig. 8) which communicates through the orifices 8 with the suction conduit.

The slow speed calibrated plug Gc communicates with the annular chamber Cc which is formed between the diflfusingtube 3 and the Awalls 41 of the space provided in the main body of the carburetor. The said sprayer also supplies the suction chamber H,

but through theorifices t t t of the diffusing tube. If itis desired to deliver air or other fluid to correct the emulsion, this can be done either through the conduit 42 after reA moving the plug 43, or through the conduit 44 (at the top of the chamber C?) after removing the plug 45 and changing 1t to a plug with. inlet tube a shown in Fig. 8. The

`is, the chamber Cc.

tube'supplying the airor other correcting fluid may be regulatedby a cock, an autoe matic 'valveorthe like (Figs.` 3 ande). f 1

Figs. 10 tol show another construction in which the members Gr GC and Gm respectively carrying the calibrated plugs 61-62- 63, are mounted in the respective bosses R--C--P formed in themain body of the carburetor. disposed on either side of the float chamber, and the boss C Vis below'. Each boss is pierced with arespective channel 9-10-11, leading.

respectively to the lower end of the reduced speed nozzle 1 and to the -lower part of each of the chambers Cp cr Cc. The members GrrGr-Cc carrying'V the calibrated plugs are screwedV into the correspondingbosses, being thus readily inspected and Vremoved through the head which extends outwardly. Beyond the head, these members are reduced in diameter, thus leaving around them an an-` The bosses R-P are laterally nularspace 6er-65,66 communicating with EIR) Vfunctioning Vof. the carburetor, which is the sameV as above specified. i

According to a modification which` can be employed irrespectiv'ely,l of the position of the calibrated plugs, I 'supply the reduced speed calibrated plug by another calibrated plug, and I may thus supply the normal calibrated plug by the slow speed calibrated plug. Y y i f i Fig. 13 shows by way ofv example an arrangement of this kind in which the reduced speed calibratedplug 61 is supplied in series with the'slow speed calibrated plug`63, that i`s,the liquid fuel for the calibrated plug 61 has `already traversed the calibrated .plug 63. 'Herein the channel67 is replaced by the channel 67;,"which connects the forwardvv end of the slowspeed calibrated plug 63, that withthe rear end of the reduced speed calibrated plug, .lateralkorifice 73. w e.

The said invention is not limited to the constr'uctionsherein described and represent# ed which are given solely vby way of example, and forinstance thebsaid calibrated plugs may be -disposed in any other manner, so that the members carrying the same willV be 'accessible from the outside of the floatchamber.

1. Ina carburetor comprising in combina Q slow-speed Von up-grades, an emulsion orm.

tion three calibrated plugs'the'first for re# duced `speed and running light, the second for normal speed on level and the thirdfor @5f ing chamber fed by said'normal speed cali-` brated plug and provided with direct output orificesl towards the engine, another emulsion forming chamber fed by said calibrated plug for Lip-grades, a narrow passage between said 510 two chambers whereby the second emulsion' Y the saine output orifices.

2. In a carburetor comprising in combinay tion three calibrated plugs the first for reduced `speed and running light, the secondk for normal speed on level and the third for lslow-speed on'up-grades, anemulsion form y `ing chamber fed by said normal speed cali- .as the supply of air and in direct' connection ent brated plug provided withy output oriiices towards the engine, and said chamber being bounded by a tube provided with. holes for with said output orilices towards the engine, another emulsion forming chamberffed by lsaid calibrated plug 'for up-grades and 'bounded by anl outer tube concentric to they kliirst, anda vnarrow passage between said two chambers.. v

3. In a carburetor with throttle valve com# prising in combination three calibrated plugs thev iirst for reducedspeed, thevsecond for normal speedv andV running light on level and ythe third' for slow-speed'con uy vgrades, an emulsion forming chamber lfed Vby saidanormalv speed calibrated plug and provided with direct output orifices towards theengine, another emulsion forming chamber'fed by said calibrated plug for 11p-grades, a narrow passage between said two chambers, a central nozzle fed by said calibrated plug for yreduced speed, a tube lengthening said central nozzle and extending nearly to the opening edgeof the throttle valve, the part of the said valve cooperating with said tube being bent in such manner that its'edge, adjacent thereduced speed Vnozzlewill`v be offset with reference to the mainv plane of the valve, whereby the aperture of the valve on the side neXt the reduced yspeed nozzle willopen more rapidly than on theopposite side and remainder of the periphery. Y Y K 4. In a carburetorv with throttle valve comon the v Lseavs nozzle and extending nearly to the opening edge of the throttlevalve, the part of the said'valve cooperating with said tube being bent in such manner -that its edge, adjacent the reduced speed nozzle willbe offset with reference-to the main plane of the valve, said tube being rigid and curved, openingv near the in a slot formedl in the latter.

` 5'. In al carburetor for an internal combustion engine,the combination, with ffuel sup-l ply means,^of three calibrated plugs, the first wallorl the engine section conduit and being` situated, in the closedgposition orf the valve,`

for reducedspeed,'the second for normal speed on level, and the third for slow speed on.upgrades,va central nozzle fed by said calibrated plug kforreduced speed, a perforated dii'usingitube surroundingv said Vcentral nozzle so as to form an emulsion cham-- j ber, output oriices being directed toward the engine from said. emulsion chamber, a ,feed

Y pipe connecting saidxnornfialV speed calibrated plug to saidY emulsion chamber, and laf'tube concentric with said perforated tube forming an emulsion `chamber whichfis fed ,by the Vcalibratedplugsfor up-grades. v 5 'In testimonyfwhereof I have signed this specification.k

CHARLESV vrmo Quek prising Vin combination three calibrated ,plugs the first Vfor reduced speed, the secondffor normal speed and running light on level and the third for slow-.speed on` up-grades, an

emulsion formingv chamber i'ed` bysaid normal speed calibrated plug andprovided with direct output orifices towards the engine, kanother emulsion forming chamberr fed by said calibrated plug for upgrades, a narrow pas-v nENRIfoLAUDEn; d

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