US1139101A - Valve device for internal-combustion engines. - Google Patents

Description

M. G. CHANDLER. VALVE DEVICE FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED MAR. 4, 1915.

1,139,101. v Patent-ed May 11, 1915.

2 S HEETSSHEET I.

Q I Ire/yew;

' M. G. CHANDLER.

Patented May 11, 1915.

2 SHEETS-SHEET 2.

UNITED sTAT-ns PATENT OFFICE. mitronn G. CHANDLER, or cnrcnoo, rumors, nssronon. T0 cnannnnn Enema VALVE oournmr, on cnrcnoo, rumors, A conronarron or rumors.

VALVE nnvrcn ron mrnnnAncomnusrron nnorim's.

Patented Mayfi, 1915.

Application filed Earch4, 1915. Serial No. 12,052.

To all whom it may con/0cm:

Be it known that I, Mmronb G. 0min]:- LEB a citizen of the United States, residing at hicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Valve Devices for Internal- Combustion Engines, of which the followin is a specification.

y invention relates more particularly to improvement in valves of the rotary or 0scillatory type for controlling the inlet and exhaust of gases through a single port 1n the engine cylinder; and'my primary ob ects are to provide a construction of yalve WlllCh shall be of simple form, economlcal of manufacture, and which will be maintained sufficiently cool even when the engine is operat at high speeds and under heavy loads, an d iy which intermixture of the fresh gases with the burnt gases in the valve will be avoided.

Referring to the accompanying drawmgs Figure 1 is a view in ver'tlca'l sectional elevation of the end portion of an internal combustion engineequipped with a rotary valve constructed in accordance with my invention, the valve being shown in elevation. Fig. 2 is a View in elevation of the valve shown in Fig. 1, the Valve being viewed from one end thereof. Fig. 3 is a section taken at the line 3 on Fig. 2 and viewed in the direction of the arrow. Fig. 4 is a View like Fig. 2 Viewed from the opposite end of the valve; and Fig. 5, a section taken at the line 5 on- Fig. 3 and Viewed in the direction of the arrow.

1 I have devised my improvement for use more particularly in connection with a spherical valve cooperating with a packing member surrounding the port in the engine cylinder, andhave therefore illustrated my invention in this connection, though with out any intention of limiting it thereby,

lhe upper portion of a cylinder of an internal-combustion engine of the four-cycle type is illustrated at 6, and is formed with a hollow head 7 from which a gas-intake pipe 8, adapted tobe connected with a carbureter (not shown), and a spent-gas outlet pipe 9', extendat opposite sides thereof. The interior of the head 7 which forms the casing for the valve,lis of general spherical contour and contains a port 10 which opens into the cylinder 6 and forms the inlet to, and theexhaust from, the cylinder, the upper portion of the head 7 being formed with a removable and replaceable section 11, whereby the valve proper hereinafter described, may be positioned in the valvecas1ng'7.

The valveproper of my improved valve device is represented at 12, and in the form illustrated is a section of a sphere, mounted on'the shaft 13 journaled in a bearing-14 provided on the head 7 The valve 12 contains non-communicating passages 15 and 16 which open through opposite ends, respectively, of the valve and communicate with ports 17 and 18, respectively, in the periphery of the valve 12 and with the inlet and exhaust-pipes 8 and 9, respectively, these ports being so located as to cause them to successively register with the port 10 when the valve is rotated.

Bythe arrangement above described, gas

to be supplied to the cylinder for exploslon therein is taken into the valve at one end thereof and discharges from the latter through the port 17 into the cylinder 6, and the burnt gas from the cylinder is discharged into the port and passage 16 and out through the valve at the other end thereof.

In the construction of valve device illustrated, the valve 12 coiiperates Witha packing-member 19 which is preferably metal and is located in an annular recess 20 surrounding the port 10 and opening into the valve casing 7, the end of the member 19 which is held at all times in contact with the periphery of the valve 12 by any suit able spring device represented at 21, being so shaped as represented, as to conform to the spherical contour of the periphery. of the valve 12.

The valve 12 may be operated in any suitable manner to time its rotation, and consequen'tly the communication of the ports 17 and 1-8 with the port 10, for the introduction of charges into the cylinder 6, and the exhaust of the burnt gases therefrom, with relation to the movement of the engine pismum cooling effect of the fresh gases entering the valve is. utilized to maintain the valve in relatively cool condition with .the manifest advantages.

In carrying out my invention, I provide in the valve 12 a partition defining the passages 15 and 16, this partition which is represented at 23, in accordance with the preferred embodiment of my invention extending across the interior of the valve in inclined position relative to the axis of the valve, the end of the valve 12 through which the exhaust gases discharge being partiall closed by a. wall represented at 24 into whic wall the partition 23 at this end of the valve merges as clearly illustrated in the drawings, the partition 23 being thus so disposed that the surface area of the assage 16 is relatively small compared wit the surface area of the passage 15, but nevertheless the cross-sectional area of the passage 16'at any point in the valve is sufficiently large to not unduly retard the escape of the exhaust gases from the valve.

It will be readily understood from the foregoing that, by forming the valve as stated above, not only is the heating of the valve reduced by reason of the reduction in the surface area exposed to the exhaust gases, but by increasing the surface area exposed to the relatively cool fresh gases,

the cooling eflect thereof on the valve is greatly enhanced, with the result as has been proven by using a valve constructed as il-bOVe stated, of preventing undue heating of the valve, permitting the engine with which it is equipped to be runat exceedingly high speeds and run under heavy loads without impairment to the structure or lubrication. Furthermore, by this feature the clearness between the valve and the casing may be reduced to the minimum with consequent reduction of leakage from the exhaust side to the inlet side of the valve, when the engine is idling.

While I have illustrated and described my im rovement as embodied in a valve of the strictly rotary type and of spherical form and cooperating with a packing-member surrounding-the port in the cylinder, I do,

not Wish to be understood as intending to limit my invention .to its use 1n such a structure, as it may be lncorporated in a valve of either the rotary or oscillatory type,

whether spherical or not, and with or without packing-rings surrounding the cylinder ort. i 1 P By using the word rotary in the following c'laims, I wish to be understood as intending to claim broadly any valve which moves about an axis and contains my improvement, whether the valve be what is commonly termed arota'ry valve or an oscillator or rocker valve. A W at I claim as new and desire tdsecure by Letters Patent is 1. In an internal combustion engine, the

combination with its cylinder having a port serving for both inlet and exhaust and a piston operating in said cylinder, of a rotatory valve controlling said port and adapted,

to be operated in timed relation to said piston and containing passages openin through opposite ends, respectively, ofsai valve and through separate ports in the peri hery'of said valve and serving as inlet an exhaust passages, the surface area of said inlet passage bein greater than the surface area of said ex aust passage. 7

2. The combination with an internal combustion engine having a. port serving for both inlet and exhaust, of a hollow rotatory valve controllin said port and adapted to be operated in timed relation to said piston, said valve containin openings in its opposite ends with an inc ined partition dividing the valve into two non-communicating passages communicating, respectively, with the open ends of said valve and opening through.

eating inlet 'andexhaust assages communicating, respectively, wit the larger and smaller openings in the ends of the valve, said passages communicating with openings, respectively, in the periphery of the valve,

the surface area of said inlet passage being greater than the surface area of said exhaust passage.

4. In an internal combustion engine, the combination with its cylinder having a port serving for both inlet and exhaust and a piston operating in said cylinder, of a rotatory valve controlling said port and adapted tobe operated in timed relation to said piston, one end of said valve being wholly open and its opposite end partially closed by an end-wall, an inclined partition in said valve united at one end with the peripheral wall of the valve and at its opposite end with said end-wall and dividin valve into non-communicating inlet an exhaust passages communicating, respectively, with the larger and smaller openings in the ends of the valve and communicatmg with the se arate ports in the periphery of said val ve.

MILFORD e. CHANDLER.

In presence of N. B. DEARBORN, D. (J. THoRsEN,

Images