US1502476A - Gas-engine governor - Google Patents

Description

July z2, 1924. 7 150mm B. T. M'SCNNA ET AL GAS ENGINE GOVERNOR Filed Nov. 15, 1920 Patented July 22, 1924.

UMTED STATES ieyie PATEN w e.

GAS-ENGINE GOVERNOR. p

Application led Novemberl, 1920. Serial No. 424,33. Y

To aZZ whom it may concern.'

Be -it known that we, BENJAMIN T. Mo- CANNA and EMIL R. KLEMM, citizens'of the United States, and residents of the city of Chicago, in the county ofCook and State of Illinois, have invented certain new and useful Improvements in a Gas-Engine Governor, and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention embodies improvements in the gas engine governor` disclosed in U. S. Letters Patent #1,298,068, which was granted to us on March 25th, 1919, and relates to 'a governor mechanism for internal combustion engines and particularly to a' governor mechanism which is actuated vby the dynamic eii'ects of the infiowing fuel mixture to control the quantity of the same entering the combustion chambers of the engine, whereby the maximum output thereof islimited. The present invention provides an arranvement whereby automatic compensation or the increased spring compression near the limiting point is attained, and also provides for a positive and convenient adjustment to a desired limiting point.

It is an object of this invention to provide a spring controlled governor for internal combustion engines which is adapted to limit the quantity of fuel mixture'delivered thereto and in which the maximum limitation may be varied by the addition of regulating means of predetermined size.

It ie also an object of this invention to provide a governor for internal combustion a0 engines in which a control valve is slidably mounted in a tapered chamber intermediate inlet a`hu outlet chambers of greater diameter than said tapered chamber in such a manner that the governing movement is ce promptly effected when the limiting point is reached.

It is a further object of this invention to provide a valve adapted to automatically limit the amountA of fuel mixture iiowing through an inlet conduit, the limiting movement of said valve being varied by Athe insertion of means to prevent closure thereof. v It is an im vortant object of this invention to provi e a' governor adapted to' act in conjunction with iniowing fuel mixturev to limit the maximum output of an internal combustion engine and at the Sametime to add to the homogeneity of said fuel mixture.

It is finally an important object of this invention to provide an efficient governor for internal combustion engines whic of simple construction and which may b positively adjusted.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanxing drawings.

The invention (in a preferred form) is shown on the drawings and hereinafter more fully described.

` On the drawings: 4

'Figure 1 is a side elevation of a fuel mixture inlet conduit of an internal combustion engine showing the same equipped with the governor mechanism of this invention.

Figure 2 is a top plan view of the governor mechanism of this invention.

Figure 3 is a bottom plan view o f the s.\rne.

Figure 4 is an enlarged section on the' line 4--4 of Figure 1.

Fi re 5 is-a view similar to Figure 4 showing the control valve in extreme limiting position.

As shown on the drawings:

The governor mechanism of this invention is adapted to be interposed between the carbureter outlet 1 and the intake manifold l2 of an internalA combustion. engine and comprises a cylindrical casing 3 which is provided at its upper and lower ends with flanges 4 and respectively, which are adapted to be secured to flanges 6 and 7 whereby said cylinder is connected to said carbureter outlet and t0 the intake'manifold. In the upper and lower ends-of said casing 3 are chambers 8 and 9- respectively,ai connecting said chambers 8 and 9 is a chamber y1 0 which tapers gradually from a somewhat abrupt shoulder 10*l towards the chamber 8, as clearly shown in Figures 4 and 5. Integral with the flange4 and extending transversely of the chamber 8 is a supporting member 11 which is apertured and provided with an integral inwardly extending boss 12 at a point opposite the center of said chamber 8. Slidably Inountedin the apere ture in the member 11 is a rod 13 and said rod 13 is threaded at its outer end andhas a nut 14 engaged on said threaded end whereby the downward movement of the rod through the aperture'in the member 11 is limited. For holding said nut 14 in adjusted position on the center portion of the rod 13 a cotter pin 15 is ordinarily inserted through an aperturel in the threaded end of said rod in the usual manner. The inner end of said rod 13 extends downwardly into the tapered chamber 10 and has secured thereon a valve 16 which has a plurality of apertures 17 therein. A coil spring 18 is 'engaged around the rod 13 between the transverse member 11 and said valve 16 and acts to normally hold said valve 16 and rod 13 in the position shown in Figure 4, and which resists the outward movement on said valve caused by the dynamic effect of the fuel mixture flowing through the chambered casing 3. This outward movement of the valve 16 of course tends to close the tapered chamber 10 to the passage of fuel mixture, and said closing action is limited by the abutting of the hub of the valve 16 against the inwardly extending boss 12 ,on the transverse member 11. In order to regulate this closing action of the valve 16, washers 19 and 2O may be engaged o n the rod 13 adjacent the outer end of said 'valve and the closing action of the valve will depend upon the thickness and number of said washers.

The operation is as follows:

Fuel mixture leaving the carbureter of an internal combustion engine is normally drawn by suction into the intake manifold.

of said engine and since the governor of this invention is interposed between the mixture outlet of the carbureter and said intake |manifold, the valve 16 of the governor mechanism is affected by the d vnmic effect ofthe moving fuel mixture and is moved in the tapered chamber 10 until the outer end thereof abuts the boss 12 on the transverse member 11, whereupon the maximum quantity of fuel mixture admitted and consequently the maximum output or speed of the engine is determined. When the engine is 1 running at normal speeds the valve 16 is in the position shown in Figure 4 and the fuel mixture flows freely through the governor around said valve and through the passages 17 therein, the dynamic effect thereof not being sufficient to compress the spring 18.

When, however, the limiting piiit'is approached the valve is forced upwardly to a position opposite the shoulder 10a formed at the junction of the chambers 9 and 10 and because of .the abrupt. constriction of the passage around said valve, the spring 18 is quickly compressed and the valve promptly moved into limiting position.

It will thus be seen that the tapered chainber provides in effect a means whereby proper compensation for the increased compressive effort needed to finally close the valve is attained. This is a feature whichis particularly valuable in the case of the smaller' type engines wherein a lag in the governing effect has to be overcome. construction the quick inal movement of the valve into limiting position due to its resistance to the flow of fuel mixture in the tapered chamber effectually overcomes the lagging. This limitation` of maximum output may of course be varied vby interposing one or more washers 19 or 2O on the rod 13 bebetween the inner end of said valve and the boss 12 whereby -the range of said valve in the tapered chamber l0 is limited. These washers 19 or 2O may be of a predetermined size so that the addition of each washer will provide for a predetermined increase in en-v gine speed. Bymaking the chamber 9 of greater diameter than the tapered chamber 10, the intlowing fuel mixture is deflected towards the center of said tapered chamber and is thus thoroughly mixed before it enters the intake manifold of the en 'ne The apertures 17 in the flange of the va ve 16 provide for the admission of a definite quant-ity of fuel mixture at all times regardless of the position of said valve.

The construction provided by this invention is simple and economical and the device alfords a convenient and easily adjustable means for automatically regulating the speed or the maximum output of 'aninternal combustion engine.

We are aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and we therefore do not purpose limiting the patent granted otherwise thanv necessitated by the prior art.

We claim as our invention:

1. A governor device, comprising a casing, a tapered chamber therein, a chamber at the intake end of said casing of larger diameter than said tapered chamber and connected thereto by a shoulder, and a governor valve normally below said shoulder and Imovable in said casing past said shoulder, the diameter of said valve being substantially the same as that ofthe lower larger end of said tapered chamber.

2. A. governor device, comprising -a casing, a tapered chamber therein, a chamber ln this improved meme 3 at the inteke end of seid eesnlg of larges" In testimony whereof we have hereunto 10 diameter than said tapered chamber and .subscribed our names in the presence of two connected' thlreo by a. shoullder, amine subscribing witnesses.

spuug-contro e governor va ve norma y below seid shoulder and'movable in seid v ARMICCANNA cesing est seid shoulder, the diameter of v seid .v ve being substantially thevsame as Witnesses:

that of the lower lerger end ofeeid n d Canmore

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