US1636187A - Carburetor - Google Patents

Description

. 1,63 6,187 J. KESSEL CARBURETOR Filed May 2, 1

. 33 f I 37 J l lll Patented July 19, 1927.

UNITED STATES J'O HANNE S Bi KESSEL, OF CHICAGO, ILLINOIS.

CARBUBETOB.

Application filed Kay 2,

This invention relates to improvements in carburetors, and one of the objects of the same is to provide improved means whereby there will be a thorough mixing of the air and fuel and at the same time supply to the cylinder of the engine what is known as a dry mixture, with the result that there will be produced a maximum amount of power with a minimum consumption of fuel.

A further object is to provide improved means whereby the supply of fuel will be automatically controlled by the suction created in the engine cylinder.

To the attainment of these ends and the accomplishment of other new and useful'ohjects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawing illustrating this invention and in which Figure 1 is a vertical sectional view of a carburetor of this character constructed Y in accordance with the principles of this inand extending thereacross is a screen 12 to permit the air to enter the mixing chamber and-to exclude foreign particles. Discharging into the mixing chamber is a needle valve casing 13 which receives its supply of fuel from any suitable source through a pipe 14 supported in any suitable manner. Arranged within the casing 13 1s an ad]ustable valve seat 15 which is arranged adja-' cent suitable outlet openings 16 in the easing wall and through which outlets the fuel flows after passing the valve seat 15.

A. needle valve 17 co-operates 'with the valve seat 15 and the valve is guided in its movement preferably by means of an enlar ement or collar 18 carried by the valve and en aging the wall of the casing 13 above the valve seat. The collar also serves as a means for limitin the movement of the valve in one direction.

1925. Serial No. 27,382.

A cap 19 is removably secured to the top of the casing 13 and through which cap the item of the valve passes to be guided there- Connected with the upper end of the valve stem is a disc like element 20 preferably of a concave shape and is of a suitable diameter that when the throttle valve 30 is opened and suction in the engine cylinder is manifested in the mixing chamber, the suction will operate upon the element 20 to raise or unseat the valve 17 from the seat 15 and thereby permit the fuel to flow out of the openings 16 in the valve casing.

A lug 22 may be provided and is remova lyseated in an opening in the pipe 14 in alinement with the valve seat 15 so that by removing the plug the valve seat may be adjusted as desired.

Encompassing the casing 13 is the hub 23 of a spinner member, which latter is provided with any suitable number of wings or blades 24. One end of the hub rests upon a bearing 25 which encompasses the valve casing 13 and is supported thereby below the openings 16. The other end of the hub has a bearing against the cap 19.

The internal diameter of the hub 23 is somewhat larger than the external diameter of the adjacent portion of the valve casing 13 so as to form a chamber 26 therebetween and with which chamber the openings 16 have communication so that the fuel flowing from the openings 16 will enter the chamber 26 in the hub 23 of the spinner and will be delivered therefrom through openings 27 as the spinner and hub rotate and which openings are located preferably adjacent one end of the hub.

The cap 19 is preferably of a diameter somewhat larger than the end of the hub and assists in directing the stream of fuel which is being emitted through the openings 27, and the diameter of the disc like element 20 is also such that the fuel will impinge the face thereof.

Arranged within the mixing chamber and encompassing the discharge outlets of the needle valve casing and the spinner 2324, is a .Venturi tube 28 which may he adjustably secured in position by means of a fas- HEISSUED tening device 29, such as a screw or. the

like, and the venturi is located adjacent the point where the incoming air and the fuel first contact.

A throttle valve 30 may be provided for controlling the flow of the mixture through the mixing chamber, and on one side of which valve the spinner and the needle valve is located.

Disposed on the opposite side of the valve is a rotor device designated generally by the reference numeral 31 which may be of any desired configuration but preferably embodies an annular member having a plurality of blades or. wings 32, any number of which may be provided, extending from the inner periphery of the member towards the diametric center thereof. These wings 32 are preferably inclined upwardly and are slightly twisted so as to give a spiral formation to the blades.

The rotor 31 is preferably provided with ball bearings 33 supported by a shoulder 3% formed in the wall of the mixing chamber and a bearing member 35. This member 35 (see particularly Figure 3) is provided with openings 36 extending therethrough and arranged at a tan ent to the periphery of the rotor. A chamber 37 is provided adjacent the openings 36 so that air which is supplied to the chan1ber37 will be directed through the openings 36 of the rotor 35 to impinge buckets or blades 38 which are carried by the periphery of the rotor 31. The openings 36 will serve as an injector for directing the air against the blades 38 to rotate the rotor.

Any number of blades 38 may be provided as well as any number of openings 36.

Communicating with the chamber 37 is an air supply pipe 39 the inlet end of which is controlled by a valve 40, the latter being normally held in a position to close the inlet opening preferably by means of a spring 41. A pipe 42 has communication with the valve chamber and also has communication as at 43 with the mixing chamber 10 preferably above the rotor 31, so that the suction created in the engine will be manifested upon the valve through the pipe 42 to actuate the valve to open the inlet pipe 39 and thereby permit air to flow into the chamber 37 to be discharged through the openings 36 against the blades 38 of the rotor 31.

This flow of air is augmented by the engine suction and the engine suction will also operate to rotate the rotor 31.

With this improved construction it will be seen that there is provided a gas and air mixing device located on opposite sides of the throttle valve 30. with the result that the incoming air and gas will first be thoroughly mixed at the point where the gas leaves the supply nozzle. When the throttle valve 30 is opened to allow the mixture to pass it will come in contact with the rotor 31 and at the same time an additional supply of air will be mixed with the mixture. the rotor 31 serving as an additional means for breaking up all of the particles of gas to produce a thorough mixture. The construction of the mixing device constitutes the subject matter of p a separate application, but is herein described for the purpose of a full and clear understanding of the entire apparatus.

It is thought that the operation will be clearly understood from the foregoing but briefly stated it is as follows. Assuming the valve 17 to be seated, the suction created in the engine cylinder will, when the throttle valve 30 is opened, be manifested in the mixing chamber and will operate upon the disc 20 carried by the needle valve 17 to raise the valve and will allow the fuel to flow through the pipe la, into the necdle'valve casing, out of the openings 16 and 'into the chamber 26 in the spinner, suction also tending to draw the fuel through the openings 27 in the spinner.

The suction will also be manifested upon the blades 24- of the spinner and will cause the same to rotate as the air is drawn in through the screen 12. As the air passes through the venturi 28 it contacts with the fuel being delivered through the openings 27 in the spinner. The operation of the spinner will cause a rotary or swirling movement to be given to the air and also to the fuel, with the result that there will be a thorough mixture or commingling of the air and fuel in the mixing chamber.

When the mixture passes the throttle valve 30 it will come into contact with the rotor 31 and additional air which is being drawn through the pipe 39 into the chamber 37 will be delivered to the mixture in the mixing chamber and will, through the medium of the rotor 31, be thoroughly mixed with the mixture, the rotor 31 operating to break up all of the particles of gas, resulting in a thorough mixture.

It will be manifest that the operation of the rotor and the spinner as well as the operation of the needle valve and the valve 40 will be controlled by suction created in the engine cylinder.

lVh-ile the preferred form of the invention has been herein shown and described it is to be understood that various changes may be made in the details of construct-ion and in the combination and arrangement of the several parts, within the scope of the claims. without departing from thespirit of this invention.

What is claimed as new is 1. A carburetor including a mixing chamber. a needle valve casing discharging fuel into thechamber, an adjustable valve seat in the casing, a needle valve cooperating with said seat, means connected with the valve whereby the valve will be controlled in its action by suction, said chamber having an air inlet, and a spinner independent of the valve and rotatably supported by the valve casing, said spinner being operable by suction independently of the valve for causing a mixture of theair and fuel in the said chamber. I 1

2. A carburetor including a, mixing chamber, a needle valve'casing discharging fuel thereinto, a needle valve, a disc like element connected with. the valve whereby the valve will be responsive in its operation to suction created in the chamber, a spinner also responsive in its'operation to suction created in said chamber, said chamber having an air inlet, a Venturi tube adjacent the point of contact of the air and fuel, and an adjustable valve seat forthe said needle valve. 3. A carburetor including a mixing chamber, a needle valve casing discharging thereinto, a needle valve, a disc like element connected with the valve whereby the valve will be responsive in its operation to suction created in the chamber, a spinner fixed with respect. to vertical movement, independent of said valve and being also responsive in its operation to suction created in said chamber, 7

said chamber having an air inlet, a Venturi tube adjacent the point of contact of the air and fuel, and means whereby the fuel may 1 JOHANN ES B. KESSEL.

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