US2153048A - Governor - Google Patents

Description

GOVERNOR Filed May 29, 1936 A L 1 37 4a 6 n. w a 8 M V a J 2 Mm 3 1 3 6 Z 7 a z Ma 4 4 w p I- Kl G. a d 6 7 a Z M a Patented Apr. 4, 1939 GOVERNOR William E. Leibing, Detroit, Mich., assignor to Leibing Automotive Devices,

1110., Detroit,

Mich a corporation of Nevada. Application May 29, 1936, Serial No. 82,655

'1 Claims. (01. 123-98) disclosed in copending application S. N. 738,114,

filed August 2, 1934, of which I am a joint inventor, and. my application S. N.' 67,358, filed March 5, 1936.

In overcoming the disadvantages of the prior art, it is a major object of my invention to provide a governor for controlling fluid flow through a conduit in combination with novel means for preventing so-called throttle cheat, the factors entering into the actuation of the throttle cheat in the conduit. v

A further object of my invention is to provide novel means for preventing throttle cheat in combination with a governor located in the in- 5 take of an internal combustion engine wherein a pressure responsive element is provided to actuate said means, the fluid passing through the filter leading to the carburetor and entering into the intake manifold being utilized as the actuating force for the pressure responsive means.

A further object of my invention is to provide novel means for preventing throttle cheat in connection with a governor mounted in the intake of an internal combustion engine wherein a pressure responsive element is provided in connection with a throttle cheat preventer, the element being subject only to fluid that has been cleaned by the filter associated with the carburetor of the engine.

Still a further object of my invention is to provide a novel governor embodying means for preventing throttle cheat, the governor being tamper-proof and not subject to meddling by an unauthorized person.

A further object of my invention is to provide novel means for preventing throttle cheat in combination with a governor employed in an internal combustion engine wherein the need for a filter on the throttle cheat device is eliminated, 50 and the cost of the complete assembly correspondingly reduced.

A further object of my invention is to provide a governor for use in connection with an internal combustion engine wherein novel means for preventing throttle cheat are employed includdevice being determined by fluid conditions with ing a pressure responsive element, the latter being arranged so that asmospheric air cannot leak into the governor and interfere with the proper carburetion of the fuel mixture passing to the engine.'

A further object of my invention'is to provide a governor for use in connection with an internal combustion engine wherein novel means for preventing throttle cheat is employed including a pressure responsive element, the element being arranged in connection with the carburetor of the internal combustion engine so that it is subject only to air passing through the carburetor and subsequently into the intake manifold of the engine, and does not interfere with the supply of fuel to the engine nor disturb the quality of the fuel mixture.

A further object of my invention is to provide a governor for controlling fluid flow through a conduit in combination with novel means for preventing so-called throttle cheat, the latter means being relatively inexpensive and simple to manufacture as compared to the prior art devices.

Additional objects, many of a subordinate or more specific nature, will appear from a study of the following detailed description and the claims appended hereto when taken in connection with the accomparwing drawing wherein:

Figure 1 is a diagrammatic view of the intake manifold of an internal combustion engine shown in connection with the carburetor and illustrating a preferred embodiment of the present invennism shown in dotted lines.

With continued reference to the drawing, wherein like reference characters are employed to designate like-parts, reference numeral Ii designates an apertured flange in a. conduit l2 of a carburetor l3 to which air is supplied from an air filter I 4 through'a connection l5. Flange II is designed for attachment to a flange it of an intake manifold 11, but is shown separated therefrom to provide a space for the reception of a governor generally indicated at G. If desired, a degassing device (not shown) may also be inserted between the manifold section and conduit l2 as described in connection with application S. N. 568,844, flled October 14, 1931.

Governor G has a cylindrical bore |8 formed therein aligned with carburetor conduit I2 and manifold passageway l1, bore l8 being formed within a block l9. Block I3 is generally similar in shape and cross-section to flanges II and I5 of'the carburetor and intake manifold, respectively, and cooperates therewith to form bores 2| for the reception of assembly bolts (not shown) which serve to rigidly secure the governor in any desired position.

If desired, the bores-2| may be made slightly larger than the corresponding bores in the adjacent flanges so as to provide for ready connection of the governor to flanges of varying size. Suitable gaskets may be provided between the contacting flanges to insure against leakage from the conduit.

It will be noted that substantially all mechanism associated therewith as will be hereinafter described, is contained within planes passing through the flanges on governor block it.

For a purpose that'will be later described, one end of a bore 2| is enlarged as shown at 22 to receive a bushing 23. Bushing 23 has an enlarged flange 24 thereon of a size to flt within a still larger aperture 25 formed in the block l9 concentric with bore 2|. As will be noted from Figure 2, the aperture 25 is deeper than the width of flange 24 on bushing 23 and defines an annular passage around the bushing for a purpose that will later appear.

Conduit |2 connected to the carburetor |3 contains a throttle valve 26, preferably of the butterfly type, which is arranged to be manually operated to control the quantity of fuel mixture drawn into the intake manifold H.

The governing device comprises an oscillatable valve mechanism 21 for throttling passageway l8 when the engine reaches a predetermined speed. Valve mechanism 21 comprises a fixed bridge member 28 and spaced vanes 29 and 3| arranged to pivot about an axis 32. Vane 3| is provided with a projection or lug 33 thereon which is arranged to cooperate with the throttle cheat mechanism as will be later described.

The valve mechanism disclosed, together with the spring means which is employed to react against the effect of the fluid flowingthrough the conduit upon the vanes of the governor, is fully described in my copending application S. N.

738,114, filed August 2, 1934, which issued May.

25, 1937 as United States, Patent No. 2,081,825, and a detailed consideration thereof in the present application is considered unnecessary.

In the present invention a relatively small bore or feed line 34 is formed in block l9, aplunger 35 being provided to reciprocate in bore 34 to contact lug 33 on vane 3| of the governor 21. Plunger 35 is of a length to extend through a casing 36 formed upon the governor block l9 which contains a cylinder 31 within which operates a piston 33. Piston 38 is preferably cupshaped as shown with the end of plunger 35 arranged to abut against the interior of the cup. A spring 39 is arranged to react against the wall 4| of cylinder 31 and against a pin 42 secured in a suitable aperture in theend of plunger 35 to normally maintain piston 38 in the right end of cylinder 31. Piston 38 is preferably grooved as shown at 43 to keep the leakage thereby to a minimum.

As shown in Figures 2 and 3, the end of cylinder 31 is open to facilitate manufacture thereof and assembly or the respective parts. After 5 assembly, cylinder 31 is closed preferably by a suitable drive plug 44 to seal the piston against the access of atmosphere and to prevent tamperlng therewith. If desired, the drive plug 44 may be sealed by means of a suitable soft metal in which an impression may be made, any unauthorized tampering with the plug being indicated by the mutilation of the impression.

A bore 45, preferably parallel to the axis of cylinder 31 is formed in block l9 extending from a point adjacentthe outer end of cylinder 31 to a passage or bore 31. A cross bore it leading from bore 45 to the interior of cylinder til at its end adjacent the drive plug 3 3 is provided as shown in Figure 4. 20

Bore 31 is arranged to connect with a bore 32 formed in the wall of the carburetor casing extending downwardly to an intersection with a bore 49 in the carburetorcasing, the outer end of which is closed by a suitable plug 5i. Bore g;

49 opens within the conduit l2 preferably at a point adjacent the upper end of the venturi 52 of the carburetor. This locatlonof the bore 49 is desirable since by the location thereof adjacent the outer edge of venturi 52, the fluid entering 3( the bore 49 consists almost entirely of air since the fuel in the carburetor is discharged into the center of the venturi and at the point where the venturi meets the bore 49, only a negligible amount of fuel is found. This arrangement is also advantageous in that there is no interference with the mixture passing to the intake manifold and no cutting off of the fuel supply or side-tracking thereof which might introduce irregularities in the feed of the proper fuel mixg ture to the engine. I

As is evident from Figure 2, the piston 33 will be actuated when there is a difference in pressure between the conduit l8 adjacent the governor valve and the opening of the bore 34 into 4 bore l8, and the carburetor conduit adjacent the bore 49. When the differential of pressure is such that the pressure adjacent the bore 49 is greater than that adjacent the bore 34,. piston 38 will move to the left against the action of the 5 spring 39, the plunger 35 contacting the lug 33 to move the governor to closed position. -When a differential of pressure no longer exists or is materially reduced, spring 31 will force the piston and plunger back into the position shown in Figure 2 wherein the plunger has no effect upon the operation of the governor, and the throttle cheat device as a whole is inoperative.

It will be noted that this construction is such that the fluid employed in actuating the piston of the throttle cheat device is cleaned by the air filter attached to the carburetor. Moreover it will be noted that there is no aperture accessible toa dishonest driver or other unauthorized per son to manipulate the governor, nor is there any possibility of leakage of the fuel mixture in passing through the engine.-

If desired, a bore 53 may be provided leading from the cylinder 31 to the interior of conduit l3 to further facilitate the transmission of pressure from the conduit I8 to the cupped end of the piston 36.

To prevent repeated contact between piston 33' and the drive plug 44, a pin 54 may be secured l across cylinder 31 adjacent the drive plug II to receive theimpact of the piston.

From the foregoing disclosure it will be seen that I have provided a device whereby it is impossible by improper manipulation of the throttle valve to gradually build up a fuel supp without disturbing the position of the governor valve,

and obtain speeds far in excess of those at which the governor is set to .operate, or in other words throttleecheat the governor.

Moreover, my improvedstructure insures.

against dilution of the fuel mixture passing into the intake manifold of the engine, insures operation ofthe throttle cheat device when such.

operation is desiredyand provides a supply of clean air-to the engine.

It is also apparent-upon comparing the present invention with the device of my Patent No. 2,081,825 and prior art devices that the necessary screening and securing nut together with the operation of tapping the cylinder and threading the governor block are all eliminated and governor valve.

The invention may be embodied in other spe cific forms without departing from the spirit or Y essential characteristics thereof. The present embodiment is therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the, foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States Letters Patent is:

1. In combination with a""c'arburetor for an in,- ternal combustion engine, said carburetor forming a part of the fuel intake conduit for said engine and having, a conduit and a throttle valve associated therewith, a governor valve in said conduit for governing the flow of fuel mixture to said engine from said carburetor and responsive to the rate of flow of fuel mixture, pressure responsive means to operate said governor valve, means to subject said pressure responsive means to the pressure of said fuel mixture adjacent said governor valve, and means to subject said pressure responsive means to the pressure of said fuel mixture between said throttle valve and the point in said carburetor where said fuel mixture is made.

2. In combination with a carburetor for an internal combustion engine, said carburetor forming a part of the fuel intake conduit for said engine and having a conduit, a throttle and an air filter associated'therewith, a governor valve in said conduit for governing the flow of fuel mixture to said en e from said carburetor and responsive to the rateof flow of fuel mixture, pressure responsive means to operate said governor valve and means to subject said pressure responsive means to a differential of pressures-in the fuel mixture adjacent said governor valve and between said throttle and said air filter.

3. In combination with a carburetor for an internal combustion engine, said carburetor having 'a-venturi therein, a governor for governing the flow of fluid to said engine from said carburetor, pressure responsive means to operate said governor, and means to subject said pressure responsive means to a differential of pressures in the fluid adjacent said governor and the fluid adjacent the downstream end of said venturi.

i. In combination with a carburetor for an internal combustion engine, said carburetor having 'a venturi therein, a passage through which fluid an air filter associated therewith, a throttle valve in said carburetor, a governor for governing the flow of fuel mixture therethrough for governing the flow of fuel mixture from said carburetor to said engine to limit said engine to a predetermined speed, and pressure responsive means to operate said governor, said pressure responsive means being subject to the diifere'ntial between the pressure of the fuel mixture adjacent said govemor and the pressure of the fluid between said throttle valve'and the filter.

ternal combustion engine, said carburetor having of flow of fuel mixture, means to oppose closing,

movement. of said governor valve in response to the rate of fuel flow to govern said engine at a predetermined speed, pressure responsive means to operate said governor valve, means to subject said pressure responsive means to the pressure of fuel mixture adjacent said governor, and means to subject said pressure responsive means to the pressure of fluid which has passed through said carburetor filter.

7. In combination with a carburetor for an internal combustion engine, said carburetor forming part of the fuel intake conduit for said engine, a throttle therein, a governor valve in said conduit for governing. the flow of fuel mixture to said engine from said carburetor and responsive to the rate of flow of fuel mixture, means to oppose closing movement of said governor valve in response to the rate of fuel flow to govern said engine at a predetermined speed, pressure responsive means to operate said governor valve, a conduit to subject one side of said pressure responsive means to the pressure of fuel mixture adjacent said governor valve and a second'conduit to subject the opposite side of said pressure responsive means to the pressure in said carburetor at a 70

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