US1777229A

US1777229A - Carburetor

Info

Publication number: US1777229A
Application number: US310009A
Authority: US
Inventors: Schneebeli Hugo
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-10-24
Filing date: 1928-10-03
Publication date: 1930-09-30
Anticipated expiration: 1947-09-30

Description

Y Sept. 30, 1930. H. scHNEEBELI' l 1,777,229:

CARBURETOR Filed Oct. 5. 1928 Patented Sept. 30, 1930 PATENT eprice HUGO SCHNEEBELI, QF COURBEVOIE, FRANCE CABIBURETOR Application `filed October 3, 1928, Serial No. 310,009, and in France October 24, 1927.

The present invention relates to a carburetor for explosion engines more particularly adapted for use with automobile ve-h hicles or apparatus for aerial navigation, 5 whichis constructed in such a manner as to compriseneither constantlevel chamber nor gas throttle, -with a View to simplifying the construction or" the apparatus, of reducing its cost considerably as a consequence and, 10 moreoverconstructing Van apparatus taking up a minimum amount of space.

The carburetor forming the subjectofthis linvention presents the following essential features:

l. The nozzle, the section of the outletorifice of which can be regulated by operating a needle valve or other suitable closing means, is located in a chamber which comprises -apertures `for they admission of the vprimary air and is in constant and direct communication with the suction of the enine. g 2. VThe diffuser is directly mounted upon the suction pipe of the engine and on the other hand leads into a chamber pierced with aperturesfor the admission of theair for' the combustion. f

3. .L-movable member interposed between the diffuser and the chamber enclosing the nozzle is adapted to lead into the diffuser, the mixturey formed in the chamber of the nozzle, and to regulate the yadmissioninto the diiiuser of the iair for the combustion and consequently the quality of the explosive mix- Cil ture to be supplied to the engine,this movable member being connected to the nozzle obturator by a lever or other transmission arranged in such a manner that:

' (a) When the nozzle obturator is brought into the position corresponding to the minimum'delivery of the nozzle, the movable member will fit into the diffuser in 'order to connect the chamber of the nozzle directly with the diiuser and limit to aminimum the admission of the combustion Vair into the latter, sothat the suction exerted in the nozzley chamber bythe suction of the' engine is `a maximum landthe engine is supplied 50 during slow running by an eXplosivemiXture maximum the movable member will be brought outside the diuser in such a man- Vner as to permit amaximum Vadmission of air Y kfor the combustion.

In order to make the invention clear, one embodiment of the carburetor forming its subject will bedescribed hereinafter by way of example only and with reference to the accompanying drawing. f

As shown in this drawing the carburetor which is shown in vertical longitudinal section comprises a single nozzle 1 whichA is located in a chamber 2 comprising at its base any number of apertures 3 for admitting primary air into the said chamber.

This chamber 2 is secured upon atubular support 4 which is in direct communication with the petrol tank by means of a pipe 5.

In the interior of this support4 is mounted a sleeve 6 which is surrounded byfa filter formed by metal gauge 7 andis pierced withv 'oriiices 8 arranged in such a way as to lead the ltered petrol to the nozzle.` v v vThe upper orifice of the nozzle-l is of adjustable sectionso as topermitthedelivery of this nozzlev to be varied according to requirements.`

In the embodiment illustratedthis regulation otthedelivery is effected by means of n a needle valve A9 arranged 1n alignment with the nozzle and rigid with a'screw-tl1readed rod l0 which is engaged in a lnut 1l and adapted to receive a movement of rotation adjustable in amplitude for raising 'and lowering the needle valve above the nozzle.

Y The rectilinear movements ofthe needle Vvalve Qmay bel controlled either byha'nd thc'driver or lmechanically by a speed regulator when theengine supplied by the carburetor, according to the invention, is provided with one. Y

For this purpose the screw-threaded rod is provided with a lever 12 adjustable in direction and connected to an operating lever 13 by a pin 14, the'position of which upon the lever 12, can b regulated by means of i a. slot: 15 cut in the said lever.

As'shown in this drawing, the nut 11 in which'ethe rodof the needle valve is mounted, is secured in a support 16 which lis rigidly securedupon the engine by means of the base 17 of a chamber 18 enclosing the difuser 1,9 and the wall oiwhich is pierced withY a certain number ofapertures 20 petting Vthe interior of the said chamber 18 in communicatien with the atmosphere.

The support 16 is pierced dinal channel 21 in the interior of which is mounted and slides with easy friction a cylindrical sleeve 22, the longitudinal axis of which is situated in alignment with that of the diffuseraY rEhis sleeve 22 is traversed, at'a certain point along its length by the needle valve 9 1 and comprises, at two diametrically opposite Y ints, two rectilinear slots. 23 permitting the.

ong'itudinal displacements of the sleeve 22. At one end, `this sleeve 22 which communirates freely with the chamber 2 of the nozzle through one ofthe slots 23, is provided with a plug 24 through which are Ypierced longitudinal channels 25 of small section, the plug being screwed into the conical head 26 of the said sleeve and bearing* against the larger haseof this. head 26 by a circular flange 27 ofs'uitable frusto-conicar section so that it will engage at times with slight clearance in the diffuser'l9. i

At its opposite end, the sleeve 22 is also provided with a screw plug 28 pierced with Bfduct 29 of 'suitable'size putting the interior i of thesaidsl'eeve into communication with the atmosphere. l Y

Thecposition of the sleeve 22 in thesup- `port 16 is regulated at will and this sleeve 1s for this purpose connected to the screw threaded rod 10 of the lneedle valve 9 by means o a lever'30 which is rigid with the said rod upon which it can beregulated angularly andV carries in a slot -31 a pin 32Y serving as a pointof attachment lfor alink 33 pivotally mounted upon a trunnion 34 rigid with the sleeve 22. c

It will be understood from the foregoing thatthesle'eve 22 follows the displacements imparted to the needle valve 9 by the control levelg 13 and that it is sufficient to act upon the latter in order to vary simultaneously the sition of the said needle valve 9 and that of 'the sleeve 22. The

levers

30 and 32 being arranged in suc a 4way that at the end of the downward travel of the needle-valve 9 corresponding to th'minimum delivery of the nozzle, the sleeve with a longituwill be brought into a position such that the conical flange 27 of the latter will engage in the central orifice 19 of the diffuser 19 in order to reduce the section of this oriiice 19n to a minimum. It will be understood that the partial vacuum produced by the engine in the nozzle is transmitted through the ducts 25 andthe sleeve 22 into the chamber of the nozz1e,'so that `the engine is supplied, for this position of the needle valve 9 and of the sleeve 22, by the rich mixture formed in the chamber 2 and mixed with the additional air drawn into the sleeve 22 through the orifice 29 and with the air for the combustion drawn through the orifices 19 andpenetrating into the diffuser through the annular space of minimum section tleft between `the conical 'iange 27 ofthe lplug 24 and the inner wall of the diuser.

This position of the needle valve 9 and of the sleeve 22 corresponds to slow running.

lIt will be understoodthat, for a covering speed, it is sufficientf to act upon the lever .lf3 in the proper direction, in Aorder to pro duce gradually the lifting of the needle valve `9 and the separation of the sleeve 22 from the nozzle and thus increase gradually the delivery 'of the nozzle and the-amount of air admitted for the combustion and thus modify the richness of the mixture supplied to the engine. f

At high speeds, theneedle 4valve 9 is broughtu tothe end of its upward travel and the-sleeve 22 tothe end `of its travel away from the diffuser so that the delivery of the nozzle Yis at its maximum. Incidentally 'at this timethe passage for the admission of air is fully open in order to obtain the suitable explosive mixture.

rlhe arrangements described are naturally vonly given by way of example and the shapes, materialsland dimensions of the constituent parts as well as the constructional.details maybe modified without c-hanging the invention in any way. Y

To sum up, the present invention relates to a carburetor for supplying explosion engines, more particularly adaptedffor use on automobile vehicles and apparatus for aerial navigation. 1 i Claims L .71. A carburetorfor explosion engines comprising, a carburetor body enclosing a chamber for the admission of primary air and an atomizing chamber following the chamber for the admission of primary air, anozzle located inthis primary air inlet chamber and arranged in direct communication with a Vgasoline tank and opening inthe atomizing chamber, a diffuser directly branched on the ysuction pipe yof the engine, achamber Jfor the admission of the air for the combustion and openino'into the diflasen'a nut securedl in the ybody the carburetor, a screw needle valve in engagement with the inner screw'thread of the said nut and adapted to be rotated manually in yone direction or the other and to obturate more or less the outlet orice of the nozzle, a sleeve opening at its free end to the atmosphere and opening at its opposite end in the chamber for the admission of the air for the combustion and longitudinally movable in the body of the carburetor for regulating the admission of the air for the combustion in the diffuser, said sleeve being provided with openings on a portion of its length adapted to put the atomizing chamber in communication either with the chamber for the admission of the air for the Vcombustion or with the suction pipe of the engine according to the position given to the sleeve, means for simultaneously controlling the position of the needle valve and the sleeve.

2. A carburetor for explosion engines coinprising, a carburetor body enclosing a chamber for the admission of primary air and an atomizing chamber following the chamber for the admission of primary air, a nozzle located in this primary air inlet chamber and arranged in direct communication with a gasoline tank and opening` into the atomizing chamber, a diuser directly branched on the suction pipe of the engine, a chamber for the admission of the air for the combustion and opening` into the ditfuser, a nut secured in the body of the carburetor, a screw needle valve in engagement with the inner screw thread of the said nut and adapted to be manually rotated in one direction or the other and to obturate more or less the outlet oriice of the nozzle, a sleeve opening at its free end to the atmosphere and opening at its yopposite end into the chamber for the admission of the air for the combustion and longitudinally movable in the body of the carburetor for regulating the admission of the air for the Vcombustion in the diffuser, said sleeve being provided with openings on a portion of its length adapted to put the atomizing chamber in communication either with the chamber for the admission of the air for the combustion, or with the suction pipe of the engine according to the position given to the sleeve, two levers adjustable'in position rigidly secured on the screw threaded rod of the needle valve, a manually operable member, a link connecting one of these levers to said meme ber and anotherA link connecting the other lever to the said sliding sleeve adapted to transmit to said sleeve suitable displacements for automatically regulating the admission of the air for the combustion according to the position given to the needle valve regu lating the outflow of the nozzle.

The yforegoing specification or" my carburetor for explosion engines7 signed by me this 21st day of September, 19:28.

HUGO SCHNEEBELI.