US1117392A

US1117392A - Fuel-vaporizing device.

Info

Publication number: US1117392A
Application number: US84871114A
Authority: US
Inventors: Chester F Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-07-03
Filing date: 1914-07-03
Publication date: 1914-11-17
Anticipated expiration: 1931-11-17

Description

Patented Nev. 1'7, 1914-.

Wbiwwow I My CHESTER F. 3011125011, OF DETROIT, MICHIGAN.

FUEL-VAPORIZING- DEVICE.

Specification of Letters Patent.

Patented is o v. 17, 1914.

Application filed July 3, 1914. Serial No. 848,711.

To all whom it may concern Be it known that I, CHESTER F. JOHNSON, a citizen of the United States, and a resident of Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Fuel-vaporizing Device, of which the following is a specification.

This invention relates to a device for vaporizing fuel for internal combustion engines. i A

After fuel is vaporized by carbureters or fuel feeders in the usual manner, it is found that many of the globules condense on the inner surface of the fuel-passage thus impairing the efficiency of the engine.'- This action is accentuated on a cold day, and is also particularly noticeable during the starting of the engine.

The object of the present invention is to provide means whereby fuel which has failed to vaporize completely, or which, after having vaporized, has again condensed, may be carbureted before passing into the engine cylinder.

This invention consists in a novel heating means located in proximity to the passage between the mixing chamber of any desired form of fuel feeder and the intake of the engine.

It further consists in the details of construction shown and described, and particularly pointed out in the claims.

In the accompanying drawing, Figure 1 is a side elevation of a well-known form of engine provided with one embodiment of my invention. Fig. 2 is a vertical section through the upper end of the carbureter and the lower portion of the intake manifold shown in Fig. 1. Fig. 3 is a side elevation of a modification. Fig. 4 is a vertical sec tion through the upper portion of- Fig. 3. Fig. 5 is a perspective view of one end of the heating coil. Fig. 6 is a section of another modification.

Similar reference characters refer to like parts throughout the several views. In the embodiment of my invention shown in Figs. 1 and 2, 1 indicates the drive-shaft, 2 the crank-case, 3 the cylinders, 4 the radiator, and 5 the exhaust manifold of a well known internal combustion engine. Connected to the engine in any desired manner is a carbureter 7 that may receive fuel through the pipe 8 from any convenient source.

The carbureter shown in Fig. 1 has a rela- ,ftomthe mixing chamber to a point in iroximity to the intake portion 10 of the intake manifold 11, and is there preferably provided with the flange 12. This flange is secured to the intake manifold in any desired manner, and may be spacedtherefrom by the annular plate 14. This plate preferably has a laterally extending groove in one of its faces; and seated in the groove is the outer end 15 of a heating coil, the body of which extends into the fuel passage and is preferably given several circumferential turns 16. The inner end of the coil extends into an annular chamber or well 18, formed by the ring 19 which is preferably L shaped in cross section. The coil is preferably coiled one or more times in this well as indicated at 21. While I prefer to form the chamber or well 18 as shown in the drawing. it is obvious that it may be formed in various other ways; for example, the member 19 may be made integral with the bod portion 9 of the fuel feeder.

It will be understood that such portions of the fuel as condense on, the inner surface of the fuel conduit will drip downwardly over the various turns. 16 of the heating coil, and if not vaporized before. will finally be received in the Well or chamber 18. Any fuel which collects in this chamber is then vaporized by the part 21 of the coil.

The member from which the coil is formed, as shown in Fig. 5, preferably comprises an inner resistance wire 23, an outer metallic tubular cover 24 to which the free end of the Wire 23 may be soldered or otherwise secured at 25, and an insulating filling 26 separating the wire 23 and. cover 2 1. The wire '23 may connect to a binding post 27 with which the plate 14 is preferably provided, it being understood that this post is insulated from the plate 14 in any approved manner. If desired, a second binding post 29, positioned on the flange 12, or at any other point in electrical connection with the body of the carbureter, may be supplied.

Current entering at the-binding post 27 passes through and heats th'ewire 23, which is of relatively high resistance, then 'to the.

cover 24 and then to the body portion of the carbureter and to the binding post 29. The heat generated in the wire 28 warms the insulation 26 and cover 24L, thus eifectively vaporizing the mist of fuel which has con densed on the inner wall of the part 9 as heretofore described.

in Figs. 3 and l, my invention is shown applied to engine in which the body of the carburetor is relatively shorter and the intake portion of the manifold correspond ingly longer than in the embodiment previously. described. in this instance the flanged end 12 of the body of the carburetor is spaced from the flange 31 on the intalre portion 32 of the manifold by means ofan annular plate 33 having an upwardly eX tending inner rim 3%. lhis rim is spaced slightly from the inner wall of the manifold intake to form a well or chamber 35 in which fuel running down the inner surface of the intake may collect as before described. As in the previous case, the heating' element may enter the fuel passage through groove formed in the plate 33, and passes through the chamber 85 in one or more turns 36, after which it may be con tinued upwardly in the form of spiral turns 16. Binding posts 3? and 38 corresponding, respectively, to the posts 27 and 29, may be employed if desired. It will be understood that current may be supplied to the heating element from any appropriate source so by means of the wires 41 and i2 and switch bar 43, or one of the wires may be omitted, the circuit being grounded to the frame of -.the engine.

- made in the details of my construction without departing from the spirit of my invention. For example, the

chambers

18 and 35 mavbe replaced, in certain instances, by a pad or ring of asbestos 4% or similar materiul, in which one or more turns 45 of the heating elements are embedded as shown in Fig. 6. it do not, therefore, desire to be limited otherwise than as indicated by the subjoined claims.

I claim:

1. In combination, two members, one an intake for an internal combustion engine and the other a carburetor operatively connected thereto, said carburetor comprising a vaporizing chamber, means whereby an nular chamber is formed in the interior of one of the members at a point between the vaporizing chamber and the engine, said annular chamber serving to collect condensed or unvaporized fuel, and means for vaporizing the fuel which collects in the annular chamber. r

2. In combination, two members, one an intake for an internal combustion, engine and the other a carburetor operatively connected thereto, said carbureter comprising a vaporizing chamber, means whereby an annular chamber is formed in the interior of one of the members at a point between the vaporizing chamber and the engine, said annular chamber serving to collectconden'sed or unvaporized fuel, and an electric heater, a portion of which extends into the annular chamber for vaporizing fuel collected therein.

3. In combination, two members, one an intake for an internal combustion engine and the other a carburetor operatively con- ;nected thereto, said carburetor comprising a vaporizing chamber, an annular member between the carburetor and the intake, said two first ment oned members and said annular member together having a passage rotor and said intake to 'ethe'r includin a passage that leads from the main vaporizing chamber to the engine, an electric heater located in said passage at a point between the main vaporizing chamber and the intake, said heater comprising an inner heating element, an insulating cover therefor, and a metallic pro'ecting cover for the insulation, said heating element being electrically connected to the metallic cover and the cover beiug electrically connected to one of the two metallic members.

5. The combination with the fuel intake,

ment with the inner wall thereof and pro-.

jecting therefrom in such manner as to form a receiving chamber 'in which drops of liquid fuel running down said wall may be- I and the other a carbureter combustion engine,

\ intake the insulation and connecting to one end of the Wire to serve as a connector between the Wire and thewall of the passage, and a circuit to a current source connecting to the'other end of the Wire.

8. In combination, two members, one an intake for an internal combustion engine operativ'cly connected thereto, said carburetor comprising a vaporizing chamber, means whereby a circuinterentially extending liquid receiver and retainer is formed in the interior of one of the members at a point between the vaporizing chamber and-the engine, said liquid .receiver'and retainer contacting with the Wall of the member in which it is located and serving to intercept condensed or unvaporized fuel running down said well, and means ror vaporizing the fuel which collects in the liquid receiver and retainer.

9. In combination, two members, one an for an internal combustion engine and the other a carbureter operatiyely connected thereto, said carbureter comprising a vaporizing chamber, means whereby an annular fluid receiver is formed in the interior of one of the members at point bea coiled heating element Within. the

curnferentially extending liquid receiver and retainer is formed in the interior of the passageway, said liquid receiver and container contacting with the Wall of the passageway and serving to intercept condensed or unvaporized fuel running down said Wall, and means for vaporizing the fuel which collects in the liquid receiver and retainer.

11. In combination, means for forming a vaporizing chamber of a carbureter, means for forming a passageway from the vaporizing chamber to the cylinder of an internal conibustion engine, means whereby a circumferentially extending liquid receiver and retainer is formed in the interior of the passageway, said liquid receiver and container contacting with the Wall of the passageway and serving to intercept condensed or unvaporized fuel running down said wall, and an electric heater for vaporizing the fuel which collects in the liquid receiver and retainer.

12. The combination with the fuel intake passage of an internal combustion engine, of passage engaging With the inner wall thereof throughout its circumference, the successive coils of the heating element being spaced apart "from each other longitudinally of the passage so that drops of liquid fuel running down said wall may be progressively heated and vaporized.

' In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CHESTER F; JOTll SGN.

Witnesses 3 EDWARD N. Paenrenn, Hose 7V. Kan-maniac.