US1210005A - Fuel-controlling mechanism for engines. - Google Patents

Description

w. mss. Y FUEL CONTROlL'iHG MECHANISM FOR ENGINES.

APPUCTIDR FILED JUNE l, ISES.

2 SHEETS-SHEET 2:

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WLLIAM ROSS, 0F CHICAGO, ILLINOISf FUEL-CONTROLLING MECHANISM FOR ENGINES.

To all whom it may concern Be it known that I, WILLIAM Ross, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Fuel-Controllin Mechanism for Engines, of which the fo lowing is a specification.

The present invention is a fuel controlling mechanism for internal combustionengines, and aims to provide a novel `and improved means for supplying the gasolene or other liquid fuel to the carbureter or fuel atomizing device, whereby predetermined charges of fuel are delivered to the carbureter as the engine operates, to furnish the engine with the necessary fuel, without there being an over supply.

The present invention also aims to eliminate the use of loat controlled valves in carbureter's, and similar contrivances now used, which easily get out of order, so as to disturb or impair the efficient operation of the engine.

With the present mechanism, the carbureter can be of very simple construction, using no float controlled valve to control the supply of gasolene, and the mechanism embodies a minimum number of parts. l

llt is also the object of the invention to provide fuel supplying means operated in synchronism with the crank shaft of the engine, whereby the amount of fuel delivered to the carbureter is proportional with the speed of the engine, in order to furnish each cylinder with a predetermined amount of fuel in the air sucked into the cylinder,

whereby a most ecient operation of the engine is obtained.

A. further object of the invention is the provision of means whereby the charges of fuel delivered to they carbureter can be increased or decreased, to change the proportion of gasolene or other fuel under various conditions.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides inthe combination `and arrangement of parts and in the details of 'construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

Specification of Letters Patent.

Patented Dec. 26, 1916..

Application led June 1, '1916. Serial No. 101,124.

The invention is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of an engine equipped with the present fuel controlling mechanism, the carburetor and valve structure being shown in section. Fig. 2 is a plan view of the engine and present mechanism. F ig. 3 is an enlarged sectional detail of the valve mechanism taken 4on the line 3-3 of Fig. 2.

In the drawings, there is illustrated a carbureter 1, which is to be taken as typical, since various suitable carbureters can be used with the presentmechanism. rlhe carvbureter illustrated embodies an air suction casing 2 attached to the intake manifold 3 of the engine and through which the air is sucked from the atmosphere to the cylinders, said casing 2 having a contracted portion 4c and a fuel conducting tube 5 terminating in nozzle 6 within the reduced portion d, whereby the air in being drawn through the portion 4 past the nozzle 6 will atomize the fuel to provide the proper combustible mixture.

The carbureter is provided with a fuel cup 7 with which the tube 5 is integral, said cup and tube 5 providing a funnel, of which the tube 5 is the spout to convey the fuel from the cup or body 7 to the nozzle 6 by gravity. A cap or plug 8 is threaded into or otherwise engaged with the mouth portion of the cup 7, and said cup is provided adjacent its upper end with an air vent 9 of restricted area.

A valve is provided to deliver the fuel in charges of predetermined volume into the cup 7, and as illustrated, said valve embodies a casing 10 integral with the cap 8 of the cup 7, and provided with a tapered transverse bore 11, a lower port 12'eXtending from said bore and communicating with the cup 7 and an upper port 13 extending outwardly from the bore 11. A' fuel supply pipe or tube 14 has its lower end attached to the upper end of the casing' 10 in any suitable manner, and has its upper end connected to a fuel tanker reservoir 15, which is elevated in order that the fuel will feed by gravity to the valve. This tank 15 may be the main fuel tank, or a supplemental or secondary tank to which the fuel is pumped, sucked or otherwise fed from the main tank which may be at a lower level, as

at the rear end of the automobile. v The valve .member is in the form of a tapered plug or spigot 16 rotatable within the bore 11, and

' provided at its smaller end with a stem. 17

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. synchronism upon which a washer 18 is fitted, said washer bearing against the casing and being held in place by a nut 19 threaded upon the stem 17, whereby when said nut is tightened the plug 16 will be seated snugly within the bore 11 to prevent leakage. The plug 16 is provided with predetermined size, to hold a given volume of fuel. The larger-end of the plug V16 has an outstanding tubular stem 21, the bore'22 of which extends axially into the plug 16 to the pocket 20. This plug 16 is `rotated in with the crank shaft of the engine, whereby the fuel supplied to the carbureter is proportional to the speed of the envae gine. The plug 16 is connected tatable part of or thereforel operatively operated by the engine,

. and various connections can'be used for this purpose. The operative connection illustrated embodies a bevel gear 23 secured upon the tubular stem 21, and meshing with a bevel gear 24 secured upon the endl of a longitudinal shaft 25 disposed at one 4side of the engine and journaled adjacent the bevel gear 24 in the bearing 26 of a bracket 27 which as illustrated isintegral with the valve casing 10. The shaft v25 is journaled adjathe valve pli g 16 making a revolution for every explosion, Y' with a plurality of pockets 20 the plug 16 is rotated one step for each exp osion.

As a means for changing the proportion of fuel, lar vstem 21 and extends through the bore 22 into the pocket 20, whereby when said plunger is projected into the pocket 20,l the pocket,will hold less fuel, and when the plunger 33 is retracted, the pocket can hold its full volumeof fuel, whereby the adjustment of the plunger willregulate the charges of fuel supplied to the carbureter. The plunger 33 can be controlled'manually in any suitable manner, and as a convenient means of accomplishing this, the plunger 33 is provided adjacent itsvouter end witha grooved collar 34 engaged by one arm' of a bell crank lever 35 having its elbow pivoted to anoutstanding arm 36 carried by the bearing 26, and a rod 37 is connected to the other arm of the bell crank lever 35 and a radial pocket or recess 20 of with the crank shaft or other .ros through the port and a sprocket wheel quantity of vfuel. or if the plug 16 1s provideda plunger 33 is slidablein the tubu- .can extend to the dashboard or other suitable point ofthe automobile, and can be o erated by a lever, handle or other manual y controlled member.

When the engine is at a standstill, the plug u16 will remain stationary, thus cutting olf communication between the carbureter and tank 15, lwhereby there is no possible iow of the fuel to and out of the carbureter.

`When the engine is in operation, the crank shaft'32 being rotated, will transmit motion to the plug 16, whereby the pocket 2O thereof is alternately brought into register with the ports 12 and 13, the plug operating in synchronism with the crank shaft to provide for the intermittent'sup-ply of fel to the carbiureter in step with the explosions. When the pocket 20 registers with the port 13, the pocket will be filled with liquid from the supply pipe 14, the air'bubbles passing from the pocket up the pipe 14 to the tank 15, and then when ,the plug 16 is turned over,

f so that the pocket 20 registers with the port 12, 'the contents of the pocket will iiow through the port'12 into the cup 7, air being admitted through the air vent 9 and passing 12 into the pocket 20. The

fuel which is discharged into the cup 7 will iow through vthe tube 5 to the nozzle 6, and will be latomized by the air suction. It is preferable to so time the plug 16that the charge Yof'fuel is delivered into the cup 7 and to the nozzle 6 at the beginning of or during the intake stroke of therespective cylinder, wherebyT the current of air flowing through the carbureter' will suck the charge of fuel from the carbureter into the cylinder. Thus, duringthe intake strokes of the pistons, the charges. of predetermined volumeI are delivered to the carbureter to be carriedl oif by lthe air suction, and in this way, each cylinder is supplied with a predetermined that the same quantity of fuel is consumed by each explosion, at any speed of the en- 'The' faster. `the engineA operates, the faster the plug 16 rotates, so

gine. The engine can be throttled bymeans of the throttle valve 1 38 within the upper portion of thecarbureter casing 2, ,as`usual,

and the proportion of fuel used cany be controlled by operating the plunger 33, which can be moved either inwardly or outwardly,l l

to decrease or increase the proportion offuel consumed. The plunger 33 can rotate with the plug 16, and itis preferable to rovide a packing gland39l upon the end ofp stem3321 topprevent leakage along the plunger ,The present mechanism provides for a' regulated supply of fuel to the engine, suchY as is not possible with the use of ordinary carbureters and with the present. mechanismfa carbureter of very simple construction can be used, eliminating the float controlled valve and'kindred devices which the easily get out of order. rIhis invention reduces to a minimum the Wastage of fuel, and has other obvious advantages.

Having thus described the invention, what is claimed as new is:

l. A fuel supplying mechanism for an internal combustion engine, embodying an air suction passage, a fuel cup having an air vent, a fuel nozzle communicating with the bottom of said cup and projecting within said passage for conducting the fuel from the cup by gravity into said passage, the fuel being atomized Within said passage, means for conducting fuel into said cup, and means adapted to be operated by an engine for controlling the flow of fuel into the cup so that the fuel is delivered into the cup intermittently.

2. A fuel supplying mechanism for ,all intenal combustion engine, embodying an air suction passage, a funnel-shaped fuel cup having an air vent, the spout of said cup terminating in a nozzle in said passage whereby the fuel flows by gravity from the cup to said nozzle to be atomized within said passage, a cap for said cup having a valve casing, means for supplying fuel through the valve casing to the cup, and a valve movable Within the valve casing for delivering the fuel intermittently into the cup.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

WILLIAM Ross.

Witnesses CHARLES Hmss, ANNETTE MARKHAM.

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