US1486522A

US1486522A - Carburetor

Info

Publication number: US1486522A
Application number: US406175A
Authority: US
Inventors: Walter A Inman
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-08-26
Filing date: 1920-08-26
Publication date: 1924-03-11
Anticipated expiration: 1941-03-11

Description

INMAN GARBURETOR March 11 1924.

Filed Aug. 26 1920 WITNESSES MSL..

Patented Mar. lll, '192th WALTER A. EINMAN, F WAUKEGAN, ELMOJIS.

v cannunn'ron.

.Application :tiled August 26, 192111. Serial No. 406,175.

T 0 all @cham t may concern-J Be it known that l, WALTER A.. lNMAN, a citizen of the United btates. and resident of llvvaukegan, in the county of Lake and State ot illinois, have invented new vand useful llinprovements in Carburetors, of which the tfollowing is a description, reference being had to the accompanying drawings, which are a part ot' this specification. i

The invention relates to carburetor-s more particularly for use in forming a combustible mixture tor internal combustion engines.

@ne of the objects of this invention is to provide an apparatus for thoroughly mixing liquid :tuel 'by mechanical agitation and churning to such to such an extent that some of the fuel is vaporized even though the fuel is not readily volatile under ordinary conditions.

A further object ofthe invention is to provide means tor ,returning lany unmixed fuel back into the mixing apparatus. l

rl`he invention further consists in the several features-hereinafter set forth and more particularly' delined by claims at the conclusion hereof.

ln the drawings: lig. l is a vertical section view of a device embodying the invention, Fig. 2 is a section taken on the line 2-2 of lilig.v 1. 1

ln the drawings the numeral 3 designates a iloat chamber provided with a float 4 carrying a valve 5 controlling the supply of fuel from a supply. pipe 6. A spring pressed plunger 7 mounted in the chamber 3 may be pressed down against the float 4 for the purpose of priming the chamber, the depressioln of the Hout causing the opening of the va ve 5.

A fuel 'conduit 8 leads from the float chamber to a Well 9 in a chamber 10. rlhe passage of fuel from the conduit 8 to the -Well `9 is controlled by an adjustable needle valve 1l.

rlhe chamber 10 is provided with an air inl let 12 and a pipe 13 leads from the inlet end thewell 9, so that the air entering the inlet 12 in passing over the fuel in the well 9 is forced to pass through a, constricted open.-l

ing and by an increased suction etlect carry some of the fuel along with it into the main portion of the chamber.

rllhe innerlvnd of the chamber 10 terminates in a centrally disposed inlet to an irnpeller casing 15 which has a tangentially disposed outlet 16 for connection with the intake manifold of the engine.

n impeller 17 has its shalt 18 iournalled in the casing 15 and suitably connected to an electric motor 19, preferably one having series characteristics and of low voltage so that it may be run 'from the starting or ignition battery of a motor driven vehicle. 'lhe impeller with the casing forms a turbo compressor and also amixing device.

butterflyv or other suitable throttle valve 20 in the outlet 16 controls the supply of mixture to the intake manifold and also controls the operation of the compressor.

'llo prevent the collection ot' any liquid fuel in the impeller casing, a pipe 21 leads from the bottom thereof back into the chamber 10 above its bottom and adjacent the inlet of impeller casing so that liquid fuel in the impeller casing draining down into this pipe may be taken up by the air and again su jected to the mixing action of the impeller. This pipe is flattened or otherwise suitably shaped at the bend 21 to spread out the fuel that may drain into it from the impeller casing, ina thin layer so as `to facilitate its being again taken up by the air and returned to the impeller casing.

ln case kerosene or other not readily volatile fuel is used, gasoline may be introduced into the lchamber 10 on starting the engine through a priming valve 22 connected by a pi 23 with a source of fuel suppl en the engine is start/ed and t e motor 19 put in operation the suction created by the rapidly rotating impeller 17 draws a stream of air over the liquid fuel vin the Well 9 and through the opening 2Liformed between the dam 1t and the surface of the' ber 10 and thence to the casing 15 W ere it is thoroughly "mixed With the air by the MMD Vanes of the impeller and the mixture thus y formed is deliveredunder a slight pressure to the outlet 16, trom whence it passes through the manifold to the cylinder or cylinders of the engine. lin this Way a thorough and eicient mixing ot the air and Quel of the motor.

is obtained and a greater charge weight furnished to the engine than is possible with the usual form of carburetor.

-In cool weather the motor 19 is placed in operation preferably just before the engine is turned over for starting in order that the impeller may be rotated rapidly to effect an initial turbulence, which will mix any condensed fuel that may be present. As the istons are caused to move downwardly on their suction strokes during the starting operation the impeller will immediately draw fuel and air from the chamber 10 and under the normal slight pressure will deliver a proper] mixed charge to the cylinders where it wi l be readily ignited to start the engineA promptly.

The throttle valve 20 serves to control the quantit of mixture delivered to the intake manifo d and also controls the operation of the impeller as a partially closed throttle will produce a back pressure in the impeller casing which will cause a decrease in speed of the motor 19 as the load on the motor is increased under such a condition and an open throttle will cause an increase in speed I desire it to be understood that this invention is not to be limited to any specific form or arrangement of parts except in so far as such limitations are specied in the claims.

What I claim as new and desire to secure by Letters Patent is:

l. In a carburetor, the combination of a fan casing, a power-driven centrifugal fan v in said casing, the casing having a central inlet passage conductin air and fuel to the central portion of the an, a tangential discharge passage, and a conduit leading from the fan casing and extending into the inlet passage with its opening directed toward the central portion of the fan for returning anyT unmixed fuel to said inlet passage.

2. In a carburetor, the combination of a. fan casing, a power-driven centrifugal fan in said casing, the casing having Ya central inlet passage conducting air andfuel to the fan and a tangential discharge passage, and a by-p-ass conduit connecting the outer portion of the fan casing with the inlet passage, whereby unmixed fuel will be returned from the fan casing to the inlet passage by an air current from the fan.

3. In a carburetor, the combination of a fan casing, a power-driven centrifugal fan in said casing, the casing having a central inlet passage conducting air and fuel to the. central portion of the fan and tangential discharge passage, and a U-shaped conduit leading from the fan casing and extending into the inlet passage Withits opening directed toward the central part of the fan for returning any unmixed fuel to said pas- WALTER A. INMAN.

Witnesses:

CONRAD HoLLsTEIN, QI. Jr. DIETMEYR.