US2461411A

US2461411A - Carburetor

Info

Publication number: US2461411A
Application number: US648735A
Authority: US
Inventors: Sr Parker Ed Cummings
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-02-19
Filing date: 1946-02-19
Publication date: 1949-02-08
Anticipated expiration: 1966-02-08

Description

Feb. 8, 1949. P. E. CUMMINGS, sR

CARBURETOR Filed Feb. 19, 1946 I N VEN TOR.

5 m a .0. M M r .mw P M Patented Feb. 8, 1949 UNITED STATES: PATENT ornca Ed at-Honolulu; Territory of Ha Appiieaiian Feliruary 19, mruseiama 6422735 A third object of the" inventio'rr'is to provide a system for feeding fuel to an internal" comb'ustion' engine which includesa variable-speed pump for mixing pre-heated airand"liquid gasoline and then conducting" saidpre' h'e'ated mix ture'to the carburetor. I

A fourth object of the invention is the pro: vision of a tank for liquid gasoline" or? other" similar fuel in which the fuel maybe vaporized toiorma dry'vapor orgas. I

A fifth object of the invention is the" provisionof' a: fuel feeding system of the character derscribed which is provided with suitable safeguards against the danger of explosiondue" to" backfire and also against the danger of excess fuelpressure. p r

These and otherobjects'are attainedby mechanism illustrated in the' accom anying-drawing V in which-'- Fig. 1 is a artly sectional partlydiagram matic" view, of the entire fuel feedingsystem herein described andiol'aimed; and

Fig: 2 is an enlarged sectional view of" the carburetor thereof". V v

'The'internal'eombustion" engine I is of" (ion ventiona'ldesi'gn as is"the"exliaust'pipe lileading 40 fromv it; the generator. i2! controlledffiyit; and theignition system.including the: battery I3; The gasoline tank M, however; .is notzconverfi tion'al equipment. Instead, it. has two "fiblhijarii mfits, a smaller compartment" l5 ihd a lai'i compartment. adjacent thereto l6'. Both" com partments may be filled" with f ordinarygasoline or" with such other fuel'as the internal coinbustion engine l'fl f may be desi'fiedfitql the fuel b'ihg" introduced" into omiiaith'leiit l5 thio'iih mm- H and i'ntocomparrmeii-t is throuig inlet I8. Ariapeftured baflf biar'd I9 isoarrie'dwithin-the larger compartment l6 hori zrmtanythereof, above; the gasolinetherein contained? This-baflie board prevents splashing of'- the gasoline into 1 the" upperpart of tank compart-merit lfi an'd real 131 in effect, separates Sal C1 compartment" into an upper and at" lower coln partmentcommunicating with" each other through the p rforations m thebafileboardi A ire second; lia'fii'e board 21' is" carried Within the smaller'coinparthi'ent 15 also horizontally there of, Bufiunlike the first bafile' board mentioned this baifie board 25 is carrie'd" below the surfacelevel ofthegasoline 22 eohtainedini said c'om partment'. This second bafile board'function'sft'o" prevent; excessive splashing of the" gasoline in compartment" I5; I

Mounted on th-e'exiiaustpipe l-lis anrair filter-- 313" which communicates with larger compartme t r 11 a .i the'fiovv'df' air fronitfie filter; aflfthrough' the pipe" 3r arid-j into compartment IS. The pump" 32 the: manner riereiha-fter des'crilj'ed. It will be cbntid lld a'ibbfitfdl Iever' 35. connected t6 the mmmewmiorssi the throttle isadvahced or retardedriie -speeaiof the motor is caused'ltb in'reafsor'd'ebrea's; thereby providing. a 1 greater artiaar Hit dualifthe-pipe s r; An-out'letipipefl 31'" prov'i-ae'sm lfiiihiatio'n between thesgasolihe' compartment: I '6 arm the manifold a'sjormternaiz cambustionengme :0; Thus it is thatwhn. theengma is iir'o'pratiofi, the throttlg'heingi ad;

vahcediorlretarded;two-forces act simultaneously as wales indpehdentlifito draw air. int'dtfie V filter an, thence through pipe 31, 'the compart nir'itlathe pipe. 31 and into the: manifold 38'}; the: vacuumereatdi by the e'r'igiiie. itself "and theressure or the pump 32.

' The system thus far describedioperates as} Thflpre-rieax cerium-amen Z launder tHedhfluenCe 0 is operatedfbymea'ri's'fdf avariahle'speed electric? motors? which is c'or'i n'ectedtothe battery 1| 3i tends down to the bottom of the compartment l6 thereby causing the air passing therethrough to mix very intimately with the gasoline in said compartment. In consequence of such action, a mixture of gasoline and pro-heated air, the mixture taking the form of a dry vapor or gas, is forced up through the outlet pipe 31 and thence into the manifold 38 of the internal combustion engine.

The second part of the system herein claimed makes use of the smaller gasoline compartment and it includes an outlet pipe 40 which provides communication between said compartment l5 and the carburetor 4|, the carburetor communicating also with the pipe 31 which leads to the manifold 38. The vacuum generated by the internal combustion engine during the operation of the engine sucks raw gasoline 22 unmixed with as follows: From ground on the motor through the motor, along the wire leading therefrom which extends as a separate wire through the cable i1 to the starting button, across the button to one side of the battery, through the battery then to the battery ground. From ground on fan motor 33, through the motor 33, wire 45, across terminals 50 and 5|, wire 46, through the cable Al as a separate wire, out of cable 41 along wires 41 0:, 41b, 47c, and did to the battery, through the battery to ground. In traversing wires 41a, b, and c, the current passes through control devices which are well known and so little part of the invention that they have not even beennumbered. The safety valve 52 communieating with chamber I 5 of the gasoline tank aifords additional protection against accidents.

, This valve prevents excessive pressures from air up through the pipe 40, into and through the I carburetor ll and thence through the pipe 31 and into the manifold 38. When the raw gasoline 22 reaches the pipe 37, it is caused to mixwith the It will be noted that between the carburetor 4| 1 and the pipe 3'! is a butterfly valve 32 which is controlled by the same control member '36 which controls the rheostat control lever 35, so that the speed of the pump 32 always corresponds to the size of the openin provided by the butterfly valve 42, the larger the openin the greater the speed, the smaller the opening the less speed.

To prevent damage from backfiring, a hingedly mounted valve 43 is carried within pipe 31, said valve being normally closed and adapted to open only when the current of gasoline vapor-air mixtin'e is moving in the direction of the internal combustion engine in response to the forces acting upon it as above described. A switch 44 shown. diagrammatically in Fig. 1 controls the electric motor 33 which is suitably grounded and operates pump 32. This operation is effected though conductor 45 leading from the motor to the switch M and conductor 38 leading to the main cable d1 of the ignition system. This cable is connected by Wires Ma, 4711 and 470 and back to the battery i3 through a wire did and is in parallel with the starter button. A pipe 48 extends from the engine manifold 38 into the closed casing containing the switch 44, and its end is closed and the pipe extends to the bottom of the casing. A lightweight piston 49 is snugly. disposed within the chamber or casing around the j 48 and by means of the hole 49a will cause the piston' iil to move up around the pipe 68 and make contact between contacts 56 and 5| thus closing the circuit for the motor. When, however, a backfire occurs the sudden surge of pressure in the manifold will be impressed upon pipe 48 and The pipe 43 above the conmake itself felt in the casing through the hole ignition switch. The several circuits are traced building up in chamber I 6.

The invention hereinabove described is susceptibl of many variations and these variations are herein contemplated.

I claim:

1. A fuel feeding system for internal combusr tion engines having a carburetor with an air intake port and a gasoline intake port, said system comprising an air heating means consisting of an filter mounted on the exhaust pipe of the en gine, a gasoline tank divided by means of a partition into two compartments, a pipe providing communication between said air filter and one of said tank compartments, consisting of an electric motor-driven air blower connected to said pipe to force heated air from said air filter into said gasoline tank compartment, a rheostat connected to said electric motor, a rod connecting said rheostat to the throttle on the carburetor, whereby opening of the throttle causes an increase in the speed of the electric motor and of the fan connected thereto, said air pipe leading from said air filter extending to the bottom of the gasoline tank compartment to force th heated air to bubble through the gasoline in said compartment to saturate said air with gasoline, a perforated baffle board mounted near the top of said gasoline tank compartment horizontally thereof, said baffie board providing a space at the top of said gasoline tank compartment between said baiiie board and the top wall of said tank in which the gasoline saturated heated air may collect, a second pipe communicating between the upper portion of said gasoline tank compartment and the air intake port and the carburetor, whereby the gasoline saturated heated air is adapted to be drawn 1 up into the carburetor, a'second compartment in said gasoline tank, and a pipe connecting said second compartment with the gasolineintake port in the carburetor, whereby raw gasoline may be drawn up into the carburetor.

.2. A fuel feeding system for internal combus tion engines having a carburetor with an air intake port and a gasoline intake port, said system comprising an air preheating means consisting of an air filter connected to the exhaust pipe of the engine, a gasoline tank having an inlet at a,

point located a predetermined distance from the top of the tank, whereby the tank may be filled only to a predetermined level, a pipe connecting said air filter with the bottom of said tank, a

variable speed'air blower connected tosaid pipe, whereby the preheated air may be caused to 'bubble through the gasoline in said tank, thereby becoming saturated with gasoline, a perforated baiile board mounted in said gasoline tank horizontally thereof above the level of the gasoline.

and defining a. space between said baffle board and REFERENCES CITED the top wall or the tank wherein the gasoline saturated preheated air is adapted to collect, a The-fon-owmg retferences are of lecord m the file OI this patent.

pipe providing communication between the air inlet port of the carburetor and said space at the 5 UNITED STATES PATENTS top of the gasoline tank, whereby gasoline sat- Number Name Date urated air may be drawn into the carburetor, and 1,072,402 Peregrine Sept 2, 1913 a second gasoline tank communicating through 1,133,628 Cook May 11, 1915 another pipe with the gasoline intake port of the 1,191,438 watts July 18, 1916 carburetor, whereby raw gasoline may be drawn 10 1,456,025 Lee May 22, 1923 into the carburetor 1,816,737 Moss July 28, 1931 2,089,364 Hadjidakis Aug. 10, 1937 PARKER ED CUMMINGS, SK 2,187,737 Gregory Jan. 23, 1940 2,306,277 Oswald Dec. 22, 1942 2,358,840 Walker Sept. 26, 1944