US1889922A

US1889922A - Fueling system

Info

Publication number: US1889922A
Application number: US476619A
Authority: US
Inventors: Clarence I Justheim
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-08-20
Filing date: 1930-08-20
Publication date: 1932-12-06
Anticipated expiration: 1949-12-06

Description

Dec. 6, 1932. c, 1' JUSTHEIM 1,889,922

FUELING SYSTEM Filed Aug. 20. 1930 2 Sheets-Sheet 1 C. l. JUSTHEIM Dec. 6, 1932.

FUELING SYSTEM Filed Aug. 20. 1930 2 Sheets-Sheet Patented Dec. 6, 1932 UNITED STATES PATENT orFic-E FUELING SYSTEM .Applieation filed August 20, 1930. Serial No. 476,619.

I My invention relates to the method of obtaining fuel for internal combustion engines and more particularly to a system or method of drawing the fuel from the fuel supply tank to the intake manifoldand while so drawing the fuel to carburetor said fuel into such a condition as is best for instantaneous combustion when introduced into the engine.

A further object is to provide a method of carbureting the fuel at the same time drawing it from the tank to the enginewith the car buretion of the fuel starting at the tank and ending when the fuel is introduced into the engine.

A still further object is to provide a system or method of drawing the fuel from the supply tank to the intake manifold of an automobile engine without the use of vacuum tanks, pumps or other external forces but by vaporizing a large portion of the fuel as it leaves the tank only drawing such solid fuel from the tank as is absolutely necessary for starting, idling and high speeds.

A still further object isto provide a more complete device for carburetting the fuel for an internal combustion engine which will re sult in greater mileage per gallon of gasoline and which will be so constructed as to act as a fueling system as well as a carburetion device, to draw the fuel from the tank to the engine.

These objects I accomplish with the device illustrated in the accompanying drawings in which similar numerals and letters of reference indicate like parts throughout the several views and as described in the specification forming a part of this application and pointed out in the appended claims.

In the drawings in which I have shown the best and most preferred manner of building my invention Figure l is a diagrammatic section of the device and the fuel tank all shown sectioned. Figure 2 is a modification thereof shown diagrammatically and sectioned. Figure 3 is a combination device using all the principles in one device shown sectioned diagrammatically without the fuel supply tank being shown. Figure 4 is a mod ified form of the device. Figure 5 is a section on line 5- 5 of Figure 1. Figure 6 is one type of spiral which may be used to give a rotary action to the fluids passing thereby. Flgure 7 is a modified form of tank showing a float for aiding in the vaporization and 5' catching of the vapors.

Inthe drawings I have shown only the junction between the intake manifold and the fueling system with the manifold. shown as A and the casing of my system shown as B.

The casing B is enlarged at it slower end'into a series ormultiplicity of

annular steps

1, 2,

and 3, with cylindrical walls 4: and 5 joining them. Above the joint of each step and through the vertical cylindrical walls et and 5 and the lower end 6 of the casing B, I bore radial ports 7 spaced the correct distance from the junction of the steps and the walls to create a. suction through the ports when per end of the walls 9 inwardly frusto-conically to a point 10 where the walls are joined tangentially to an outwardly curved portion 11 which curve forms the bottom end ofthe tube 8. Thus the wall 6 draws the fluids in-v wardly until they hit the curve 11 from there the fluids are constricted and drawn through the point 10 at which pointan inward suction is created and ports 12 are bored radially thereinto from an annular chamber 13 on the out-sideof the tube 8 and as the fluids pass through the constriction 10 the suction is built up in the ports 12 and draws any fluids in the chamber 13 into the tube 8 to join those passing therethrough. The flare out of the walls 9 increases the suction through the ports 12. A lead line 14 connects the chamber 13 with a source of fluid supply such as the tank C shown in Figure 1 of the drawings. A control valve 15 controls the flow of fluids through the pipe 14. Each of the

steps

1, 2, and 3 are provided with an encompassing ring 16 which ring if formed with a section removed therefrom where it joins the wall and the step, and the rings are set into place by screwing them onto threads formed on the outer side of the walls 4, 5 and 6, leaving an annular chamber 1'? around the walls in direct communication with the ports 7.

Lead lines

18, 19 and 20 join the chambers with-a source of fluid supply and as shown in Figures 1 and 2 this would be vapors from the top of the tank C. The outer edge of the step 3 is joined to a cylindrical wall 217forrning a cylindrical chamber 22 therewithin and spaced apart Venturi

tubes

23 and 24 are joined'into the bottom of the chamber with the balance of the space closed to the outer atmosphere by an annular casting 25 carried medially therein, and having a flange on the bottom side thereof to close that portion of the chamber 22 which is not closed by the

tubes

23 and 24. A line 23a connects the chamber 236 of the tube 23 with direct flow of liquid fuel from the tank C. It will be obviousthat other tubes maybe used entering into the chamber '22 spaced around the casting 25, as shown by the dotted lines 26. The bore 27 of the casting opens at the top end into the chamber formed by the walls 6. The outer walls of the casting are parallel and the top end is formed into the frustum of a cone 28 having a screw flange 29 formed on the exterior thereof to direct all fluids into a rotary motion. This flange may be used or not depending upon the action Iequiredof the fluids. The cone is spaced from the walls 4 and 5 suflicient distance to allow the walls to function correctly. A manually operated butterfly valve 30 controlsthe flow of fluids through the chamber within the walls Gbelow the Venturi tube 8 and spring held butterfly valves31 control the amount of air allowed to enter the Venturi

tubes

23 and 24. The bore 27 of the casting 25 is connected with a Venturi tube 33 which tube has the lower outwardly taper-ed aperture 34 passed through the fuel tank C. T he Venturi tube 33 is formed of diverging walls35 joined tangentially to an outwardly curved wall 36 and with an annular chamber 37 connected with the interior of the tube at the tangential juncture of the walls by radial ports38. The annular chamber 37 is connected with a source of fluid or vapor supply by a pipe 39.

A butterfly valve 40 controls the flow of air through the opening 34. A screen 41 screens all air entering the system through the bottom of the tank and a catch flange 41a prevents any condensed fluids from draining out of the bottom of the opening 34. The tank introduced through the grill. the ports and into the fuel in the tank, thereby aerating the fluid and vaporizing a portion of. the fuel in the tank. so that the pipes leading from the top of the tank will draw fuel from the tank in the form of a vapor. The top end of the inlet pipe 43 is provided with an air cleaner 46 to clean all air entering the tank. A valve 47 is placed in the line or pipe 39 to shut off all flowof fluids therethrough when desired.

The right side of Figure 1 is shown as the device would be built were it used as a carburetor with the combination of a fuel pump or vacuum tank, Lines 48 connect the chamber 17 with the vapors in the float chamber 49 and a line 50 connects the chamber 13 with the fuel in the float chamber. A line 51 leads into the Venturi tube chamber 24a of the tube 24 directly from the fuel in the float chamber and a float 52 controls the level of fuel in the float chamber. A trap 14a in the line 14 catches fuel for starting and prevents back flow of fuel through the pipe 14.

The form of device shown in Figure 2 is modified in that the casting 25 is provided with a double frustum of a cone joined together but of different pitch to the angle of the frustum and the Venturi

tubes

23 and 24 and 26 are connected with the Venturi tube 35 of the fuel supply tank instead of opening into the open air. The bore 2'? of the casting 25 is open to the atmosphere and a manually controlled butterfly valve 55 controls the flow of air therethrough or is used toshut the bore as a choke while starting the motor. The lines 23a are connected only with the vapors on top of the tank C instead of with the fuel in the tank as shown in Figure 1.

In Figure 3 of the drawings 1 have shown a Vent-uri tube 56 connected with a source of fluid supply by a pipe 57 leading from the chamber 58 and the ports 59. The tapered walls 60 of the lower end of the Venturi tube are joined-to an outwardly expanded chamber 61 into which chamber ports 62 connect angled chambers 63. The angled chambers 63 are formed of a cylindrical body 64 having

steps

65 and 66 formed between the chamber and the ports. Ports 67 are bored into the said steps above the level of the joint thereof and encompassing hollow rings 68 are nect the rings and chambers with a source of fluid supply preferably vapors as shown in Figure 1 by the

pipes

18, 19 and 20. The

lower ends of the chambers 63 are tapered inwardly to form Venturi tubes 71, said tube being formed similar-to the tube 56 having the tangential curve and tapered walls and having ports 7 2 bored thereinto at the point of smallest diameter. The lower ends of the tubes are joined to lead pipes which lead to a Venturi tube in the fuel supply tank such as is shown in Figure 2 of the drawings. A

central bored frustum of a cone 99 is or may be supported centrally in the chamber 61 by brackets 74 as shown in the tube at the left and the exterior of the said tube will be provided with a spiral 75 to give rotary impetus I to the vapors and fluids passing through the chambers. Pipes connect the annular cham ber 76 of the tubes '5 1 with a source of liquid fuel supply. In the chamber 61 I provide a spiral deflector 98 to rotate the fluids as they pass through the chamber. Valves 77 control the flow of fuel through the Venturi tubes 71.

The modified form shown in Figure 4c is showing a side draft, but, may be used as a down draft device as may allof these devices, by inverting the general direction of the flow therein and placing them above the intake manifold. The modified form of Figure at is composed of a chamber 79 having steps 80 formed on one end thereof through which ports 81 connect the interior of the chamber with annular chambers 82 formed in rings 83 and connected with a source of fluid supply by pipes 8 1. The extreme end of the steps is joined to a chamber. 85 and the end of the chamber 85 is joined to the in take manifold of the engine. An idling Ven turi tube 86 is joined to the chamber 85 and the lower end is open to the atmosphere controlled by a spring held butterfly 87. A lead pipe 88 connects the annular chamber 89 of the tube 85 with'a source of liquid fuel, and a catch pot or pocket 90, ifhorizontal and if vertical the idling venturi has the catch pot, is formed in the said chamber 85 to catch condensed fuel to hold it there for starting, and thelower side of the chain ber 79 and the steps 80 will also catch fuel therein, to aid in starting. The'end of the chamber 79 is joined to a Venturi tube 91 with the lower tapered walls 92 connected with a venturi in the tank such as that shown in Figure 2, and a lead line 93 connects the annular chamber 94 with a source of fluid supply in the tank. Ports 95 join the chamber 9-1 with the point of smallest diameter of the tube. A butterfly 96 controls the flow of fluids through the tube in the walls 92 thereof.

' In Figure 5 of the drawingsI have shown the angled tangential direction of the ports into the Venturi tube and this style of boring may be adopted wherever ports are desired into'the Venturi tubes throughout the device. Also the elevation of the ports may be varied or they'may be bored in rotation each one higher than the last making a curve or spiral of the incline of the p0rts,thus aiding in the rotary action of the fuels hrough the Venturi tubes. n

In Figure 6 of the drawings 1 have shown a modified type of spiral which may be used either between'the walls 6, in Figure 1 or wherever spirals of the other type are shown to aid in theefficiency of the device.

In Figure 7 of the drawings I have shown a form of tank withthe Venturi tube 102 the top of the tank. An" annular chamber connects the pipe 103 with the ports leading 1 into the Venturi tube 102, andthe walls 105 are tapered out to a step 106, which step is connected with a cylinder 107 which in turn extends down through the tank. A lead pipe line 108 connects ports in the step 106 with the top-of the tank. Within the tank a float 109 is provided having the top side closed to hold vapors therein and having vertical stand pipes 110 and111 leading up into the pipes 103-and 108 respectively, the pipes to carry fuel vapors from within the float close to the fuel surface, up and into the pipes 103 and'108. A pipe 112 leads into a pipe 113 which may be connected with other parts of the sy'stemor may beused just as a guide'for the float. 'A butterfly valve 114: controls the suction of air for starting and running the motor 'and a butterfly 115 controls the speed ofthe motor.

. The main principles of my invention are to vaporize the fuel partly in the tank and finally at the engine, but in some instances I'have found that the fuel is completely carburetted in the venturi at the tank and no other Venturi tube is necessary, as this alone will operate the engine.

Having thus described my invention I desire to secure by Letters Patent and claim: 1. In a fueling system for engines the com-' bination of a Venturi tubeformed of an inverted frustum of a cone formed integral and tangential to a curved surface and hav ingthe extendedside walls tapered outwardly from the curve; step cuts formed adjacent the tapered walls Venturi tubes leading into a chamber below theistep cuts ports from annularchambers into the side walls of the step cuts; ports-into the Venturi tube at its tangential juncture; an annular chamber around said Venturi tube in open connection with said ports; a lead line connecting said annular chamber in said Venturi tube with a source of fluid supply; lead lines connecting the annular chambers around the step iii.

cuts with a source of fluid supply; a tapered walled member through'the fuel supply tank; a Venturi tube on the upper end of said member; a pipe connecting the central opening of the chamber below the step cuts withthe Venturi tube at said tank; a lead line connectfrom annular chambers into the side walls of the step cuts; ports into the venturi at its tangential juncture; an annular chamber around said Venturi tubein open connection with said ports; a lead line connecting said annular chamber in said Venturi tube with a source of fluid supply; lead lines connecting the annular chambers around the step cuts with a source of fluid supply; a tapered walled member through the fuel supply tank; a Venturi tube. on the upper end of said member; a pipe connecting the central opening of the chamber below the step cuts with the Venturi tube at said tank; a lead line connecting said Venturi tube with the upper vapors on top of said tank; and means by a float to 7 direct vapors from said tank directly into said lead lines through vertical lead pipes inserted within said first mentioned lead lines.

3. In a fueling system-the combination of a chamber secured to the intake manifold; another chamber spaced from the first chamber by steps; a Venturi tube leading into said last mentioned chamber; an annular chamber surrounding the constricted portion of said venturi; ports leading into said venturi from said chamber atanangle to the radius and each port being slightly raised or lowered in ratio to the other ports to give the incoming fluids a rotary spiral motion; a catch pot in said first mentioned chamber; a smaller venturi leading into said first mentioned chamber from one side thereof; lea-d lines connecting the Venturi tubes with sources of fluid supply; annular chambers surrounding the steps; ports connecting said steps with the interior thereof; and lead lines connecting said annular chambers with a source of fluid supply.

4. In a fueling system the combination of Venturi tube secured to the intake manifold of an internal combustion engine; a chamber under said Venturi tube; angled chambers leading from said chamber; steps formed in the top ends of said angled chambers; Venturi tubes formed in the ends of said angled chambers; ports through said steps and ports leading into said Ventur'i tubes to introduce fuel into said Venturi tubes and into said chambers by the increased suction of air forces passing the-rethrough; spring controlled valves to control the flow of air through said angled Venturi tubes in said chambers; and a valve in the lower .end of said Venturi tube to control the suction therethrough as desired.

5. In a fueling system for engines the combination of a Venturi tube formed of .an inverted frustum of a cone formed integral and tangential to a curved surface and having the extended side walls tapered outwardl y from the curve; step cuts formed adjacent the tapered walls; Venturi tubes lead ing into a chamber below the step cuts ports from annular chambers into the side walls of the step cuts; ports into the Venturi tube at its tangential juncture; an annular chamber around said Venturi tube in open connection with said ports; a lead line connecting said annular chamber in said Vent-uri tube with a source of fluid supply; lead lines connecting the annular chambers around the step cuts with a source of fluid supply; a tapered walled member through the fuel supply tank; Venturi tubes on the upper end of said member; a pipe connecting the central opening of the chamber below the step cuts with the Venturi tube at said tank; a lead line connecting said Venturi tube with the upper vapors on top of said tank; and a valve-to control the suction through said Venturi tube. v

6. In a fueling system for engines the combination of a Venturi tube formed of .an inverted frustum of a cone formed integral and tangential to a curved surface and having the extended side walls tapered outwardly from the curve; step cuts formed adjacent the tapered walls; Venturi tubes leading into a chamber below the step cuts; ports from annular chambers into the side walls of the step cuts; ports into the Vent-uri tube at its tangential juncture; an annular chamber around said Venturi tube'in open connection with a said port; a lead line connecting said annular chamber in said Venturi tube with a source of fluid supply; lead lines connecting the annular chambers around the step cuts with a source of fluid supply; a tapered walled member through the fuel supply tank; a Venturi tube on the upper end of said member; a pipe connecting the central opening of the chamber below the step cuts with the Venturi tube at said tank; alead line connecting said Venturi tube with the upper vapors on top of said tank; means in said tank to vaporize; the fuels therein by aeration; a valve to control the suction through W said Venturi tube; and spring held valves to control each of the Venturi tubes.

7. In a fueling system the combination of a Venturi tube formed of tapered walls in the form of an inverted frustum of a cone formed integral and tangentially to a curved surface and having the ends of the curved wall extended and tapered outwardly; a step formed adjacent the ends of the said tapered walls; and a chamber formed on said step extending down through the fuel supply tank; means to connect the Venturi tube with the intake manifold of an automobile; an annular chamber around the Venturi' tube in open connection therewith by angled ports leading from the point of smallest constriction of said tube; a. lead line connecting said chamber with the fuel in said supply tank; an annular chamber surrounding said step; ports connecting the interior bore of said step with said chamber; and a lead line connecting said bore with a source of fuel supply.

8. In a fueling system for engines the combination of a Venturi tube formed of an inverted frustum of a cone formed integral and tangential to a curved surface and having the extended side walls tapered outwardly from the curve; step cuts formed adjacent the ta- I pered walls; Venturi tubes leading into a chamber below the step cuts ports from annular chambers into the side walls of the step cuts; ports into the Venturi tube at its tangential juncture; an annular chamber around said Venturi tube in open connection with said ports; a lead line connecting said annular chamber in said Venturi tube with a source of fluid supply; lead lines connecting the annular chambers around the step cuts with a source of fluid supply; a tapered walled member through the fuel supply tank; a Venturi tube on the upper end of said member; a pipe connecting the central opening of the chamber below the step cuts with the Venturi tube at said tank; a lead line connecting said Venturi tube with the upper vapors on top of said tank; a valve to control the suction through said Venturi tube; a

valve to control the flow of fuel into the intake manifold and a valve to control the flow of fluids through the lower end of said tapered walled member in said tank.

9. In a fueling system for engines the combination of a Venturi tube formed of an inverted frustum of a cone formed integral and tangential to a curved surface and having the extended side walls tapered outwardly from the curve; step cuts formed adjacent the tapered walls; Venturi tubes leading into a chamber below the step cuts; ports from annular chambers into the side walls of the step cuts; a spiral in said tapered walls; ports into the Venturi tube at its tangential juncture; an annular chamber around said Venturi tube in open connection withsaid ports; a lead line connecting said annular chamber in said Venturi tube with a source of fluid supply; lead lines connecting the annular chambers around the step cuts with a source of fluid supply; a tapered walled member through the fuel supply tank; a Venturi tube on the upper end of said member; a pipe connecting the central'openings of the chamber below the step cuts'with the Venturi tube at said tank; a lead line connecting said Venturi tube with the upper vapors on top of said tank; a valve to control the suction through said Venturi tube; and means to choke the device when starting theengine. v 1 r .10. In a fueling system the combination of a chambersecured' to the intake manifold; another chamber spaced from the first chamber by steps; a Venturi tube leading into said last mentioned chamber; an annular chamber surrounding the constricted portion of said venturi; ports leading into said venturi from saidchamber; a catch pot in said first mentioned chamber; a smaller venturi leading into said first mentioned chamber from one side thereof; lead lines connecting the Venturi tubes with sources of fluid supply; an-

nular chambers surrounding the steps; ports connecting said steps with the interior thereof; lead lines connecting said annular chambers with a source of fluid supply; and valves to control the flow of fluids through said chamber and said Venturi tubes.

11. In a fueling system the combination of a Venturi tube formed of tapered walls in tank; means to connect the Venturi tube with the intake manifold of an automobile; an annular chamber around the Venturi tube in open connection therewith by angled ports leading fromthe point of smallest constriction of said tube; a lead line connecting said chamber with the fuel in said supply tank; an annular chamber surrounding said step; ports connecting the interior bore of said step with said chamber; a lead line connecting said bore with a sourceof fuel supply; and means by a float to direct vapors from said tank directly into said lead lines through vertical lead pipes inserted within said first mentioned lead lines.

12. In a vaporizing device for use in fueling systems the combination of a fuel supply tank carrying an aerator composed of a hollow grill having ports through the bottom side; an inlet pipe leading from above the level of the fuel into said grill; means to clean the air passing through said inlet pipe;

a float carried within said tank above said' grill; funnel shaped outlets from said float spaced thereaboveand connectedwith lead;

lines to carry the vapors to the source of consumption; and means to guide said float above said grill.

13. In a fueling system for engines the combination of a Venturi tube formed with tapered walls tangentially to a curved base withextended lower Walls; step cuts formed adjacent said walls; ports connecting the interior of said Venturi tube witha source of fluid supply; ports through the vertical walls of said step cuts connected with a source of fluid supply; a float chamber mounted below said step cuts; means'to introduce fuel into said float chamber; and means to control the flow of fluids from said float chamber to said ports. V

In testimony whereof I have afixed my signature. p p 7 CLARENCE I. JUSTHEIM.