US1195764A

US1195764A - of paris

Info

Publication number: US1195764A
Authority: US
Publication date: 1916-08-22
Anticipated expiration: 1933-08-22

Description

E. H. ARQUEMBOURG. FEEDING APPARATUS FOR INTERNAL COMBUSTION MOTORS.

APPLICATION FILED OCT. 27, 19H.

1,195,764. Patented Aug. 22, 1916.

INVENTOR Emi 1e Wbourg ATTORNEYS :QUEMBOURG, of 71 UNITED STATES PATENT OFFICE. I

EMILE-HENRI ARQ'UEMBOURG, 0F PARIS, FRANCE, ASSIGNOB TO SOCIETE J'ULES GROU'IZELLE, ABQUEMBOUBG 8c 0115., OF PARIS, FRANCE.

I FEEDING APPARATUS FOR INTERNAL-COMBUSTION MOTORS.

To all 'whom it may concern:

Be it knqwn that I, EMILE HENRI AR- Rue du Moulin Vert, in the city of Paris, Republic of France, engineer, haveinvented a Feeding Apparatus for Internal-Qombustion Motors, ofwhich the following-ifs a full, clear, and exact description.

In apparatus for feeding ordinarily employed, the carbureting liquid is admitted to the motor either by suction or by injection. In the first case the air sucked by the motor, lays hold of and draws with it the necessary quantity of fuel oil for its carburation.

When the motor is running with constant speed and power, the flow of air and the flow of the carbureting liquidmaybe regu-' lated sothat the quantity of fuel picked up '1 fuel is injected by means of a pump,

. possessing may be in. a determinedproportion to the quantity of air sucked by when the speed and power of the motor are varied, as in the case of'automobiles, it be- I of the differences of density and viscosity of the two fluids, air and liquid fuel, to maintain thlS' proportion; in effect, when the motor in-' creases its speed, thequantity of air sucked :up remains always ap roximately in-prospeedo this mot0r, but the portion to the.

a greater density and liquid fuel, having from this increases 'ngich more rapidly than that of air in proportion as the speed increases, ar-

rives in excess, in variable proportions according to the differences in speed. In the second case, that is to say, when the liquid the inertia of the liquid in movement, particularly when the motor and consequently the pump, rotating at great speeds, holds the pump valve lifted beyond the end of the expulsion stroke of the piston of this latter there follows a supplementary admission of liquid fuel which varies in different proportions for each speed; it is, therefore, equally impossible in this case to maintain the proport-ions of the liquid fuel and the air sucked The present invention has for its object a feeding device'for internal combustion Inotors, constructed in such a way as to furnish to the motor a quantity of liquid fuel always strictly in proportion to the quantity'of air sucked by the motor, whatever may be. the speed and the power of this motor, and thus the motor but fact a vital power which Specification of Letters Patent.

v, Patented Aug. 22,1916. I Application filed October 27, 1911. Serial No. 657,134. i

remedying the above-mentioned inconven- IGIICBS.

The accompanying drawing shows, by

way of example only, this feeding device.

Figure 1 represents, in the form of a diagram, the'whole of the apparatus. Figs."2, 3 and 4 show modifications Figs. 5 and 6 show, in section, in'two positions, the modification of a detail. Fig. 7 is a sectionon the line AA of Fig. 5. i

- In the present apparatus shown Fi 1, the tank a, which contains the liquid fue is connectedby a pipe I) ,to a pump a operated by the internal combustion motor d. This pum which is a rotary pump for example,

she d produce a flow in proportion to its speed; further, this flow is calculated in such a way as to be considerably above the maximum requirement of the'motor, with the object of permitting a more easy regulation and to compensate for losses due to ,wear. The outflow pipe 6 of this pump a divides into a main pipe 7 anda-branch pipe 9, the main pipe f opens into a carbureting apparatus andthe branch pipe 9 returns to.

the tank a. p I

The main pipe f andthe branch pipe g, or one or the other, is or. are provided with regulating meansintended either to compensate the differences of'height of'outfiow of these two pipes or to regulate conveniently theiroutflows. Upon'the less elevated pipe I is arranged a valve h loaded insucha way as to balance the difference of height of outflow of the liquid in the main pipe f and in the branch pipe g in the case represented in Fig. 1. this valve his placed u on the branch pipe 9 but if the tank a was p aced at a more elevated level than that at which the main pipe flows into the carb'ureter, this valve would be placed upon this main pipe In addition, two cocks-i, j, are placed in the two pipes f and g, with the object. of conveniently dividing in these two pipes the quantity'of liquid expelledby the pump (2 so that the main pipe f delivers always the connected by a right and left'hand screw threaded sleeve, so that by rotatln'g this sleeve in one or the otherdirection, it is' possible to increase or decrease the length of this link; further, the operating lever n of the .gas throttle It", has a slot at which enables the position of the point of artlculation of the extensible link m to be varied;

by this arrangement it is possible to regulate at will the maximum degree of opening of the cock 2' and, nevertheless, to make the closing and full opening, the extremes of regulation, of the cock i and of the cock k remain always proportional between themselves. The most simple sections which can be employed preferably with this object are sections having a rectangular form or having the form of a lozenge. The cock. j, placed upon the branch pipe g, may be provided with an index moving over a gradu ated quadrant. Therefore, by the manipulation of this cock j and of the sleeveof the extensible link m, it is always POSSIblG to regulate conveniently the flow in the two vaporization chamber 0 in communication with the atmosphere and into which opens the pipe f; this chamber 0 is located in a casing 39 in the interior of which circulate the exhaust gases from the motor. The vaporization chamber 0 is connected by a pipe 9, to the suction tube Z which terminates at the suction valve or inlet pipe of the motor; this tubeZ is provided at its base with an extra air inlet valve 1'. I

The operation of the present arrangement for supplying the fuel is as follows Suppose the throttle is is completely open and the cock 2' at its maximum regulated opening, as shown in Fig. 1, and thatthe motor 03 is A working at full power. The pump 0 driven by the motor, sucks the fuel drawn from the tank a by the pipe I), and sends it into the pipe 6, and then into the two pipes f, g. The

liquid sent into the pipe f is projected into Mil the vaporization chamber 0, heated by the exhaust gases which circulate in the casing 19, and is vaporized in this chamber until it is drawn away by the motor. Under the effect of the suction of the motor, the exterior air enters equally into the chamber 0 and mixes with this carbureting vapor;

there is thus formed a very rich carburetedmixture which enters the suction tube Z below the throttle is, there dilutes in the extra air entering by the valve r, and arrives mum consumption of fuel oil by the motor,

this excess of fuel oil passes through the branch pipe 9, which returns it to the tank a; this pipe 9 only allows the excess fuel oil to pass, not consumed by the motor, owing to the resistance opposed by the throttling of the cock j. If the motor rotates slowly, the quantity of air sucked up in a given period of time is small; the air enters then principally by the chamber 0, and in very small quantity by the valve 1 which offers a certain resistance. quickly, the air enters at the same time by the chamber 0 and bythe valve 1', which opens more completely and allows the'necessary 'addition of air to pass. When working at full power, the flow in the main-pipe f and in the branch pipe 9 being always in proportion to each other, as has already been stated above, and the volume leaving the pump being in proportion to the speed of the motor, there is necessarily a constant proportion between this speed of the motor and the quantity of fuel oil which flows through the main-pipe. If the motor ought to work at reduced power, the plug of thecock his turned so as to reduce the suction of the passage of the suction pipe Z this displacement of the plug of the cock It causes a corresponding displacement of the plug of the cook a upon the main pipe f, the section of The carbureting apparatus comprises a passage of the carbureted air and of the fuel, control each other and retain thus the N proportion of each flow. Therefore, in all cases, the present arrangement of supply,

assures a rigorously proportioned carburation. Y

In some cases, it may be advantageous instead of having a fixed regulation cock j upon the branch pipe 9, to connect this cock 7' by a small link or by any other mode of control connection to the cock 2' upon the main pipe 7'', so that when the speed is reduced, the section of the passage in the branch pipe is increased when the main pipe is closed, and inversely. In the apparatus above described the two cocks 7c and 2' control each other by a mechanical connection; Fig. 2 shows another method of realizing this control. a i

The plug of the cock '5 of the main pipe fof the fuel is connected by an extensible link m to a piston s which is movable in a cylinder 6, the part of this cylinder opposed to the link m with relation to the piston s, is in communication with the suction pipe Z of carbureted air in the part comprised between the throttle k and the inlet part of the motor. An antagonistic spring u is interposed between the piston s and the bottom of the cylinder If, this spring is calculated so as to retain the piston s in the position corresponding to the opening. of the cock i when the throttle is completely open.

ceive by this apparatus displacements in proportion to those of the throttle k; t The I connection between the two cocks k and 2' of the cock k.

Figs. 3 and 4 show two other methods of realizing the4present system of feeding, in which the variation of flow of the fuel, in case of driving at reduced power, is obtained by diminution of the speed of the pump. The transmission of the motion of the motor 03 to the pump 0 is realized by means of a belt 1) passing over two conoidal surfaces o and o keyed respectively upon the shafts of the motor and of the pump, a fork w, carried by a rod '10 enables the belt to be moved upon these conoidal surfaces and the speed of the pump to be varied. The displace,

ment of the rod to may be controlled either, as represerted at Fig. 3, by a slotted arm 11. keyed upon the plug of the throttle k, or as shown in Fig. 4 by a piston s which is moved by the effect of the partial vacuum produced in the pipe Z by the partial closing of the cock is, as above stated with respect to the method of carrying the invention into effect shown at Fig. 2. These two arrangements assure the simultaneous dis placement of the gas throttle and the variation of corresponding speed of the pump, and consequently a variation always proportionate of the quantity of fuel and of the quantity of air. Any'other system of transmission providing a progressive change of speed could be applied to connect the motor to the pump 0.

Figs. 5 to 7 show an arrangement applicable to the present system of feeding, by means of which the valve r may :be done away with'and permitting the gas throttle to assure the mixture of carbureted air and additional air sucked by the motor. In

front of the throttle k, the suction tube is divided into two unequal parts Z Z by a artition m of rounded form, as shown at ig. 6; the part Z is in communication with the tube 9 which directs the carbureted air,

and the part 1 opens into.the atmosphere.

When the throttle is is completely open,

Fig. 5, the suction of the motor takes place at the same time in the two parts Z Z"; to assure the homogeneity of the mixture, the plug of the throttle is or the tube Z may take the form of a. helicoidal partition g, which will compel the mixture to take a gyratory movement. When the throttle is is partially closed, the suction diminishes in the part Z and when this plug is moved into the position shown in Fig. (3, the suction of the motor takes place only in the part Z Besides-the advantages above indicated, and particularly that of maintaining con stant the proportion of air and of fuel under all conditions of speed of the motor,

the present system of feeding possesses also the advantage of assuring the formation of a homogeneous carbureted mixture; in effect, the fuel, being completely volatilized by its passage through the heater, is brought to a perfectly gaseous state and is thus mixed intimately with the air.

The present system of feeding may-be employed with any kinds of fuel, not only fuel oil or alcohol, but also hydrocarbons of a somewhat great density. This arrangement of feed has also the advantage of being un affected bylvi-bration and of permitting the fuel tank to be placed at any level with respect to the various parts of the-carbureting system. The present system of feeding may be applied equally well to motors having a single cylinder as to multiple cylinder motors.

The above indicated arrangements are only given as examples; the forms, dimensions and details of construction of the various parts of the apparatus may be varied according to the applications.

Claims:

1. A feeding apparatus for internal ,combustion motors, comprising in combination, a tank containing the liquid fuel, a pump operated by the internal combustion motor and the suction of which is connected to said tank, the flow of the pump being proportional to its speed and distinctly above the maximum consumption of the motor, a car bureting apparatus, an outflow conduit leading from the pump and bifurcating in two conduits, one leading to the carbureting apparatus and the other to the tank and adapted to return to the tank the carbureting liquid not passing to the motor, and regu- 1 pipe on the outlet pipe 015 QP P and said motor.

being adapted compensate for the dillerencesjof height to which the liquid is driven.

back in eachof said pipesand to regulate the outflow-of the latter according to the quantity of air sucked by the motor whatever may be the speedand power of the 2. A,fe'eding apparatus for internal combustion' motors, comprising in combination,

atank containing the liquid fuel, a pump operated by the internal combustion motor and the suction of which is connected to said tank, the flow-of the pump being'proportional to its speed and distinctly above the porizing carbureting apparatusheated'by maximum consumption of the motor, a vaf the exhaust gases of the motor, an outflow I conduit leading from the pump and "bifur eating in two conduits, one leading to thecarbureting apparatus and the other to the tank and adapted to return to the tank the I carbureting liquid not passing to the motor,

and .to regulate theoutflow-of the latter,-

and regulating means intercalated on the one-hand on the pipe in which is sent the 1 liquid driven back by the pump and leading to the carbureting apparatus and, on the other hand, on the branch pipe said regulating means being adapted'to compensate for the differences of height to which the" liquid is driven back in eachof said pipes accordingto the-quantity ,ofair sucked'by the motor, whatevermayl-be the speed and power of the'motor.

3. A feeding apparatuslfor intei'nal com bustion motors, comprising in combination,

a tank containing the liquid fuel, a pump operated by the'internal, combustion motor and the sucti'onof which is; connected to said tank, the flow of the pump being proportional to its speed and distinctly above 1 the maximum consumption'of the motor, a

liquid not passing to the motor, a check valve l Y pipes, a cock-placed upon the branch-pipe,

a'gas throttle upon the carbureted air inlet .p-ipe, a cock upon the outlet pipe and a de-.

vaporizing carbureting apparatus heated by the exhaust gases of the motor and connected to the" outlet pipe 'of the pump, a, branch adapted to return to the tank the carbureting arranged upon that pipe which has the less elevation for regulating the outflow of said vlce by which the cock of the outlet pip'eiscontrolled by said gas throttle. v 4. Af feeding apparatusvfor internal combustion motors, comprising in combination, a tank containing theliquid fuel, a pump."

operated by the internal combustion motor and the suction of which is connected to said]; vtank, the flow of'the pump being pr0pQ ':j tional to its speed anddistinctly above the"- maximum consumption'of the motor, a car-f bureting apparatus connected to the outflow of said pump,'. a'-branch pipe on the outlet pipezof the pump -and adapted to return to the tank the .carbureting liquid not passing to the motor, a check valve arranged upon that pipe which has-the less elevation for regulating, -the outflow of said pipes, a cock placed upbn the. branch pipe, a gas throttle tank, an outlet pipe leading to the carbureter, a valvein said outlet pipe, andmeans whereby the position of the valve in said outlet pipe will be controlled by the position? of; the valve in motor.-

6. In a feeding apparatus for internal? combustion motors, a supply tank, a. car

bureter, a motor having a suction pipe with the suction pipe of the; f, v

which the carburetor isconnected, a pump 1 operated by the motor and connected with the supply'tank, an outlet pipe leading from the motor and having branches, one of the branches being connected with the supply tank and the other with the carburetor, a

valve in the suction pipe of the motor, a

valve in the branch of the outlet leading to the'carbureter, and means for controlling the valve in the-said branch 'pipe from thevalve in the suction pipe of the motor. 4

7. In a feeding apparatus for internal combustion motors, a motor having a suction pipe provided with anairvalve and a throttle, a supply tank, a 'carbureter con nected with the suction pipe of the motor between the air valve and throttle, a pump operated by themotor and connected with the supply tank, an outlet pipe leading from the pump, and having branches, one branch .being connected with the supply tank and the other with the oarbureter, a valve in each branch of the saidjoutlet, and means for controlling the valve in the branch leading-to the ca'rbureter from'the throttle of the suction pipe of the motor.

The foregoing specification of my feeding apparatus for internal combustion motors signed by me this tenth day of October,

1911 I i a i EMILE HENRI ARQUEMBOURG.

Witnesses g i j H. C. Coxn,

- f GEORGES CHAnLns- OOQUET,