US1190125A - Carbureter. - Google Patents

Description

l @WM/2@ c.. DE LuKAcsEvlCs. CARBUBETER. APPLICATION FILE-Dl DEC-4. i915.

Patented July il, 1916.

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CHARLES Da LUKAGSEVICS, OF NEWARK, NEW JERSEY, .ASSIGNGR T DANE MANUFAC- TUBING- COMPANY, 0F NEWARK, NEW JERSEY, A CORPORATJQON' OF N EN JERSEY.

' CARBURETER.

Specification of Letters Patent.

Patented July el, lill.

Application filed December 4, 1915. Serial No. 65,087.

To all whom t may concern: n Be it known that I, CHARLEs DEl LUKAosnvies, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Carbureters, o f which the following is a specification.

This invention relates to carbureters for internal combustion engines and `more particularly to a carbureter of that type where- 'in gasolene vapor is delivered to the air which makes up the explosive mixture through the agency of an absorbent element preferably composed of felt and partially vsubmerged in the liquid gasolene in the fuel supply chamber. Y bureters of this type, it has beenl proposed to regulate the degree to which the absorbent gasolene distributing element is exposed to the iii-coming air in accordance withvthe speed at which the engine is yto be operated.

i Thus, when the engine is to run 'at a mimimum speed, a minimum area of the absorbent Adistributing element will be exposed,

i tions are carried outL and as the speed of the engine is increased, the exposed area of the distributing element will be correspondingly increased. According to the present invention, these operawhich, in connection with the regulation of the degree to which the absorbent distributing element 'is exposed to the air passing to air passingthrough the carbureter there will the mixing chamber or motor suction tube, also elfects a regulation of the degree to which the said element is submerged in the liquid gasolene in the supply chamber. Thus, for a minimum exposure of the absorbent gasolene distributing element to the be a minimum submergence of said element inthe liquid gasolene; and as the degree of i exposure of the absorbent distributing element to the air is increased, its degree of submergence in the liquid gasolene will be correspondingly increased. These operative effects attain the principal object of the invention which :is to provide for. the greatest accuracy and facility in regjilating the quantum and richness of the `mixture in accordance with any speed throughout the full range of which the engineis capable.

A further object of theinvention is to provide a carbureter of the type and for the purposes stated which shall be of ex- In connection with car-- by a construction ceedingly compact, simple and durable construction; in which the various operative parts are readily accessible forthe purposes cleaning, renewal. or repairs; and in which no adjustments are entailed by the ol-isiiantling or the assemblage of the various par s.

Embodimehts of the invention are illustrated in the accompanying drawings wherein Figure l is a central vertical sectional view of a carbureter in which the features of the invention are incorporated. Fig. 2 is a horizontal section on the line 2-2 ofF ig. l, the rotatable element which carries the felt distributing` blocks being shown partly in elevation. Fig. 3 is a plan view of a slightly modified construction, the mixing chamber appearing in section. are fragmentary diagrammatic planviews of vthe construction illustrated in Fig. 3

Figs. 4, 5, e and i" showing different positions of the distributing element for speedsA varying from mini-- mum to maximum. Figs. 8, 9, 10 and 1l aie diagrammatic sectional views of the disn tributing element in positions which correspend to the positions in which said element is shown in Figs'l to 7, respectively. vThe .dotted line A-B indicates a normal gasothese figures.

.v Similar characters of reference designate corresponding parts throughout the several views. p f

The carbureter shown in Figs. l and 2 includes a mixing chamber .1 for'v connection in the usual manner to the motor suction tube, an air inlet pipe 2 communicating with the lower end of themixing chamber l, `a float ,feed chamber 3 at one side of lthe mixing chamber and a distributing element i .constructed to deliver `gasolene from the float feed chamber in the form of gasoleiie vapor to the air passing upwardly through the mixing chamber. j

The mixing chamber l is preferably provided at a point above the distributing element -l with a throttle valve 5 of the win g or butterfly type.' The' air inlet pipe 2 is preferably provided with a suitable regulating valve 6 by which the absolute amount of air delivered by saidpipe may be accurately regulated. The communication of. the pipe 1 by a slot 11 extending longitudinally of the casing 10. The cylinder which constitutes the distributing element 4 is provided with end journals 19. and 13, the former having its bearing in a wall plate 14 and the latter having its bearing in a web 15 which closes one end of the casing 10. The said casing is provided beyond the web 15 with an annular extension 16 which carries a closure cap 17 and provides a chamber 18 external to the casing 10. The chamber 1S communicates with the float feed chamber 3 by a duct 19, and with the interior of the distributing cylinder 4 by a duct 2O formed axially through the trunnion 13.

In order that the distributing cylinder 4 may have an accurate and secure lit in the casing 10, it is pressed toward the web 15 by a spring 21` which bears between the closed end of said cylinder and the wall plate 14; and the trunnion 13 of said distributing cylinder has a conical end which lits in a conformable opening in a packing gland 22 carried by the web 15. y

The distributing cylinder 4 is a fuel reservoir or holder, the gasolene being supplied thereto by the duct 20, and said cylinder is instrumental in delivering gasolene vapor to the air which passes through the mixing chamber through the agency of absorbent blocks 523,` preferably of felt, which are setradially into the wall of the cylinder 4 and have their exposed faces flush and coliformable to the outer circumferential face of said cylinder. The felt blocks 23 extend between the inner and outer circumferential faces of the regulating cylinder 4 and project somewhat into the interior of said cylinder. The blocks 523 are always partly submerged in the liquid gasolene and the degree of their submergence depends on the position of the cylinder 4. Said blocks are also disposed' whereby their exposure to the air passing Athrough the mixing chamber will be of gradually increasing or decreasing charac ter. This effect may be attained in various ways, but in Fig. 1 it is attained by disposing the blocks Q3 along a line which extends obliquely to the axis of the cylinder and by making the slot Vl1 of sufiicient width to effect simultaneous exposures of all the felt blocks employed.

The operation of the distributing cylinder 4 is preferably correlated to the operation of the throttle valve 5, and for this purpose, the stem of said throttle Valve carries, externally of the mixing chamber 1, an arm 24 which is conneril by a linlrQ to aliarm S26 provided on the trunnion 12. The arm 24 engages a stop screw threaded in a lug on the carbureter casing (shown in dotted lines in Fig. 2) to limit the opening movement of the throttle valve.

lllhcn the engine is running at its minimum or throttling speed, the felt blocks E23 will be completely concealed by that portion 1,0a of the casing 10 at the upperside thereof which intervenes between the mixing chamber 1 and the float feed chamber 3, except for a small fractional part 01 the surface of the block 23 at one end of the cylinder 4, specifically, in the embodiment shown, at that end of said cylinder which adjoins the trunnion 13. As the speed of the engine is increased, the cylinder 4 is turned counter-clockwise to proportionately increase the degree of exposure of the felt blocks 23 through the Slots 11 and the degree of submergence of said blocks in the liquid gasolcne. This will be apparent from Fig. 2 #wherein the normal gasolene level 1s indicated by the line A-B As the speed of the engine is diminished, the cylinder 4 is turned in clockwise direction, thereby proportionately diminishing the dcgree of exposure of the feltblocks 23 and the degree of submergence of said blocks in the liquid gasolene. ln this way, the quantum and richness of the mixture is accurately regulated in accordance with any speed of the engine throughout its full range.

The mixing chamber 1 preferably has a constriction 27 in its outer wall at the eleva tion of the slot 11 in order that the air may be deflected in an obliquely lateral direction across the exposed felt distributing elements.

The modified construction shown in Fig. 3 is the same as that described as regards its principles of organization and operation, the difference consisting solely in the arrangement of the felt blocks. In this case, the casing 10 has an opening 11 in substitution for the slot 11, this opening being of generally oval outline and the felt blocks, here designated 23, are arranged in different rows disposed longitudinally of the cylinder 4. lf desired, and as shown, the blocks 23L may be differentiated as to the sizes, the blocks which are exposed earlier being of greater diameter and those which are exposed last being of less diameter.

Figs. 4 and 8 show the position of the distributing cylinder' 4 when the engine is running at minimum or throttling speed, in which position :i portion of only one of the blocks 23u is exposed. Figs. 5 and 9 show a position of the distributing cylinder 4 for a low speed, greater, however, than the throttling speed, wherein one of the blocks 23a is completely exposed and two adjoining blocks ar. partly exposed. Figs. 6 and 10 show r her position of the distributing cylinder 4 for a higher speed wherein three of the blocks 23 are completely exposed and wherein all of the blocks 23a' are completely exposed. The line A-B commonto Figs. 8 to llfindicates the normal fuel level, and by reference to this line,'it will be noted that as the exposed area of the'felt increases, the submergence ofthe felt blocks in the liquid gasolene correspondingly increases. Fig. 2

shows the felt blocks 23 as shouldered and as posure to fsaid mixingV chamber through said 1opening, said absorbent means being subheld in shuldered openings provided therefor by supporting posts 2 8. Figs. 8 to llf show 4a slight modification in the assemblage of these blocks, according to -which the.. blocks -23a are fitted in threaded .openings u between the circumferential faces of the c'yltion engines, in combination, a mixing chamcio inder 4 and the posts 28 are dispensed with.

The invention is believed to be of considerable novelty within its particular eld `and itwill, therefore, be understood that no speci'ic description herein contained is intended 25 to yput any limitation uponthe `scope of the appended claims which does not `iiihere in the language thereof.'

Havingfullydescribed my invention, I claimi f 1. In a carbureter for internalcombusber, a fuel supply chamber, absorbent fuel distributing means submerged in the liquid fuel and arranged intermediate said chambers, and means for progressively and simul- `taneously increasing the exposure of said absorbent means ini said mixingv chamber andthe subniergence of said means in thev liquid fuel, di', in like manner decreasing such exposure and submergence.

2. In acarbureter for internal combustion engines, in combination, a mixing charnbeil', a'fuel'supply chamber, and a regulating' element provided with absorbent fuel dis.` tributing means.. exposed in saidmixing' chamber and submerged in the liquid fuel of said supply chamber, said element being operable to progressively and simultaneously increase the exposure of said absorbent means in said mixingchamber and the submergence of said means 4in the liquid fuel,

- or, in like manner, to decrease such exposure and submergence.

` 3. In a carbureter for internal combustion engines, in combination, a mixing chamber,

a fuel supply chamber, and absorbent fuel.`

distributing. means submerged in the liquid fuel and arranged intermediate said chambers, said absorbentY means being operable whereby its exposure-in said mixing`. cham` ber and-its submergence-in the liquid vfuel I' are `progressively and. simultaneously increased or decreased as the case may be, or,

'in like manner, whereby such exposure and` submergence are decreased.

. 4. In a carbureter for internal combustionA engines, in combination, a mixing chamber,y

withs'aid fuel supply chamber, and absorlf vl entnieans carried by said ycylinder for exe.

merged in the liquid of said supply' chamber and being arranged whereby, upon a ro#y tation of said cylinder, its exposure throu h said opening and itsy vsubmergeiice in t 'e f 801y liquid fuel is PlOgI'GSSVely and'Simultane-g-- ously increased or vdecreased vas the case,

maybe.

5. In 'carburetor .for internal tion engines, in combination, a mixing charm said cylinder for exposure `to said mixing 85 an opening communicating with themixingA chamber, a hollow regulating cylinder rota` nection with said fuelsupply chamber, and .a plurality. ofabsorbent blocks carried by chamber through said opening, said blocks being submerged in the liquid of said supply chamber and being arranged whereby,J4 upon a rotation of said cylinder, their.4 exposure through said opening and their' submergence inthe liquid fuel is progressively and simul? as f'the case.

taneously increased or decreased maybe. f

o. In a carbureter for interna-l.combus-A tion engines, in combination, v .amixing chamber, a fuel supply chamber; absorbent fuel distributing means submerged in the liquid fuel andA arranged intermediate said chambers, '-saidabsorbent means being oper- 105i f able whereby-its exposure ,in said mixingL chamber and. its submergence iii they liquidfv v fuel are progressively and simultaneously increased or decreased as the case may-be, a

throttle valve in said mixing chamber, and

means for corrielatingthe operations of said.

absorbent means and said throttle valve.

In testimony whereof I have-hereunto set my hand in presence of two subscribing witnesses.

lVitnesses: i

H. R. Noma, CHARLES C. LURIQH'.

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