US1149908A

US1149908A - Carbureter.

Info

Publication number: US1149908A
Application number: US79119013A
Authority: US
Inventors: Maurice Goudard; Marcel Mennesson
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-09-22
Filing date: 1913-09-22
Publication date: 1915-08-10
Anticipated expiration: 1932-08-10

Description

MI GOUD/IRD & M. Mmmssom. GARB'URETER. v

APPLICATION FILED SEPT, 22| i913.

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MAURICE GOUDARD AND MARCEL MENESSON, 0F LEVLLIS-PEERET, FRANCE.

caneunn'rnn.

Specification of Letters Patent.

Patented ingu Elli', $3215,

Application led September' 22, 1913. Serial No, 79,l90.

T0 all whom it may concern Be it known that We, MAURICE GOUDARD and MARCEL MnNNnssoN,citizens of the French Republic, residing at 39 Rue Fouquet, Levallois-Perret, Seine, France, have invented eert-ain new and useful Improvements in Carbureters; and` we do hereby declare the following to be a full, clear, and exact description v,of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine.

The invention relates to carbureters and refers to improvements in devices of the' type in question which are more particularly applicable to carbureters for fixed mo Y tors, but Which may be utilized in some cases for motors of other descriptions.

The principal object of the invention is so to construct apparatus or devices of the kind in question, that they may regulate the motors or other engines to which vthey are attached, Without it being necessary to employ additional devices 'for this pur-l ose. p The invention consists generally in conibining with apparatus of the kind in question one or more tubes, each adapted to form a nozzle, or some of which are adapted to form nozzles and in providing a Well which is in direct connection with the lower portion of the constant level chamber, into which Well the lower end of the beforementioned tube or tubes dip, and in providing ineens for causing the relative position of the aforesaidlower or entry openings of the tube and of the level of the fuel in the Well to vary as a function ofthe velocity of the motor or other engine to which the device is attached, which means may be the suction produced in the aspirator tube by the motor or other engine. The constant level chamber fitted to the apparatus, and the reservoir for feeding such constant level chamber may be respectively, a. simple chamber (that is to say one unprovidedwith a float) under the influence of the suction of the motor, and a lower reservoir connected to the aforesaid simple chamber by means of a tube opening into the latter at above the height at which the fuel therein is to be maintained.

-The invention also includes, besides the principal arrangements just mentioned, certain other details of construction vvhich will be hereinafter more fully explained.

lnorder that the invention may be clearly pressed to tion of the Figure l is a diagrammatic section in a.

plane or planes containing the respective -axes of the constant level chamber and the nozzle; the carburetor being in this case fitted .vith a single noaa aindrconstructed according to the invention, F ig. 2 shows another forni ci' carburetor, provided with a single nozzle and constructed according to the invention.

ln constructing a carbilreter according to the invention and as illustrated in the accompanying drawing at Fig. l a is the constant level chamber, o is Well which is in direct communication with the lower portion of the said constant level chamber a. This Well is of such depth that, when the fuel in the constant level chamber o is at its normal height there is no liability of the said fuel overflowing the edges of the Well.

c is the aspirator tube.

Z is a tube constituting a nozzle, the lower end of such tube being adapted to dip into the said Well 2'), and the upper ing into the aspirator tube c.'

di is a line perforation in the tube d, which perforation may upper or lower portion of the said tube or in Sonie other suitable position.

` Means are provided for varying the rela-l tive positions ci the entry orifice elV the tube d and of the level of the fuel in the Well I), as a function. of the velocity of the motor or other engine, Th's means may be the suction produced in the aspirator tube c by the motor or other engine in connection therewith. The aforesaid ineens may comprise a device for causing the tube al to be displaced vertically While the level of the fuel 'in the Well o remains constant and may consist, as shown at Fig. l, of an elastic diaphragm e which is so fitted and arranged that itis subjected on one of lits faces to the atmospheric pressure and upon the other face to the suction produced in the said tube r. The nozzle is so attached to the said diaphragm, for instance bypassing it through the said diaphragm and xing it thereto that the .tube itself is raised and degreater or less extent as a funcsuction produced in the said portion openbe located at the.

As an alternative means may be employed-` for modifying uie'height @l the level or the fuel in the well ZJ While the tube ci remains immovable. For instance and as vshown at Fig. 2, a conduit f may be pro- ,.vided, the sectional area of which may be Letters latcpi; 'or the United States capable of regulation, which conduit is so arranged as to establish a communication between the aforesaid tube c and the upper portion of the constant level chamber a,

the seid chamber bein@ either made air ti ht b or provided with a perforated cover fur-` nished with means. such as a small opening g, (Fig. 2) for establishing a communicetion between 'the interior of the cha-in` loer and the atmosphere. yl`he opn may be so formed that its dimensions can be regulated. In other cases means may be provided for enabling the tubo ai to he ver# tically displaced and foil modifying the height of the fuel in the well Z) at the same time.

With this construction when the motor vto which the carburetor is fitted is working normally, the nozzle of the carburetor acts in the ordinary manner, while when the speed of the motor rises, the relativo posi.- tions of the entry orifice of the tube o7 and of the surface of the fuel in the wellb is modi fied, owing to the increase of suction. produced in the upper portion of the const-ant level chamber a. The extent to which the said opening clips beneath the surface of the fuel lin the said well consecuientlg.r diminH ishes, until it entirely disappears on even be'- comes negative. The supplyY of fuel tothe nozzle therefore din'iinishes to a greater and greater extent until it is entirely out olf when the lcveloi" the fuel in the well fel below the entry orifice of the tube Th occurs when the maximum velocity selected has been reached. the extent to which the tube d dips into the well o being regulated accordingly, as shown in the example at Figs. l and 2.

`We may combine, with the foregoing ar rangements, one of the ordinary systems usuali;rA employed for regulating the speed of fuel to the constant level cliaino r e.

It will be understood that the invention is not limited in any way to the par .icular method of' carrying it into effect willich has been more particularly described with refer ence to the draw modifications falling; `within the pr thereof.

What we cillin'- i desire to en America l, .inf c ling y" nog, but that it inclu es all4 combination of Licence constant level chamber, a well in direct communication with said-chamber and subject tov atmospheric pressure at the -top thereof, a tube forming a nozzle the lower end of which tube is adapted to dip4 into'the fuel in the well vand means for modifying as a function of the velocity of the motor to which the device is attachedthe extent of immersion of the lower orifice of the tube in the fuel 'in the well substantially as described.

f2. In a carburetor the combination of a constant level chamber, a well in direct communication with said'chamber and Isubject to atmospheric pressure at thetop thereof, a tube forming a nozzle-the lower end of which tube is adapted to dipinto .the fuel in the well and means controlled by the suction produced in the aspirator tube connecting the carburetor and the motor for modifying as a function of the velocity of the motor to which the device is attached the extent ofinimersion of the lower orifice of the tube in the fuelin vthe well substantially Y y as described.` y

3. ln a carburetor the combination of a constant le'vel chamber, a well in direct ccmmunication with seid chamber and subject to atmospheric pressure atthe top thereof,

a tube formule` a nozzle the lower end of vwhich tube is adapted to dip into the fuel in the well, and means controlled by the suction produced in the aspirator tube connec+- ing the 'carbureter and the motor to which the device is attached for relativelyv Varying the level of fuel in the Well With'iespect to the lower end of the nozzle to an extent proportional to the Velocity of the motor substantially as described. Y

Ll. ln a carburetor 'the combination of a constant level chamber, e. Wellin direct communication with said chamber and subject to atmospheric pressure at the top thereof, .a'tuoe forming' a. nozzle the lower end of which tube is adapted to dipinto the fuel in thervell, and means exposed to the suction of the motor to cause the. relative height of the level-.of fuel in the Well and the lower end ofthe nozzle'to rise and fall to an extent proportional to the velocity ofthe motor substantially as described. 'j

5l ln a carburetor, the combination of a. constant level chamber, a Well in direct communication with the said chamber, a tube formingle. nozzlmthe lower end of which tube adapted todip into the fuel in the well, means controlled by the suction prof frice is attached, for causing the nozzle to be displaced .ei'ticall, means for causing the oe communicated to the surfe-conf the the c 'L ut i n 1 .JE

ieu tric ici-.ver ci the ytube .-n produced in tlio'saiilA aspirator tubo.:

` ,fel chamber so dips into the fuel in thewell varies proporveonstanf level' chamber, a Well in direct communication with the said chamber, a tube forming a nozzle, the lower end of which tube is adapted to dip into'the fuel inthe Well, and the upper end of which is exposed to the suction of the engine, and means for causing the suction produced in the said aspirator tube to be communicated to the surface of the fuelV in the constant level chamber so that the dept-h to which the lower end of the tube dips into the uel in the Well varies proportionately to the Velocity of the motor substantially as described.

7. 'in e eerbureter, the combination 'of a constant level chamber, a Well in direct com-v munication with the said chamber, a tube forming a nozzle, the lower end of which Atube is adapted to dip into the fuel in the Well, and the upper end of which is exposed to the suction of the engine, means for causing the suction produced in the said espirator tube to be communicated to the surface of the fuel in the constant level chamber se that the depth to which the lower end of the tube dips into the fuel in the Well Varies proportionately to the. velocity of' the motor, andan opening the sizeof which may be -regulated between the atmosphere and the top of the space in the constant level chambei` substantially as described.

' /l/n testimony whereof, We affix our signatures, in presence of two Witnesses.

MAURCE GOUDARD. MARCEL MENNESSON.

Witnesses:

HANsoN C. Con,

PAUL BLUM.