US1172782A - Rotary valve for internal-combustion engines. - Google Patents

Description

' G. W. .FOUKILy ROTARY VALVE FOR INTER-NAL COMBUSTIOYN ENGINES. x APPLICATION 111211 AP11.125, 1912.v 11Y11Ewn v'11111121 1,172,782.

1 1915. Patented Feb. 22,1916.

UNITED sTATEs PATEN GEORGE W. FOUKE, OF SACRAMENTO, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN MENTS, TO NATIONAL MANUFACTURING COMPANY, OF SAN FRANCISCO, CALI-- ROTARY VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patent-eu Feb. 22, raie.

Application led April 25, 1912, Serial No. 693,074. Renewed July 21, 1915. Serial No. 41,188.

To all whom z't may concern:

Be it known that I, GEORGE W. FoUKE, citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented new and useful Improvements in Rotary Valves for Internal-Combustion Engines, of which the following is a specification.

This invention relates to rotary valves for `internal combustion engines.

It is the object of this invention to provide a rotary valve for controlling the delivery and discharge of gases to and from engine cylinders, and which is designed to obviate the use of cams, push rods, puppet valves, springs, and the like.

A further object is to vprovide a rotary valve for internal combustion. engines by means of which the explosive mixture delivered to the engine cylinders will be superheated from the heat generated by the exhaust gases.

A further object is to provide a rotary valve of the above character which is simple in construction and efficient in operation,and which is adapted to be adjusted to compensate for wear of the valve surface.

The invention. consists of the parts and .the combination and construction of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is -a view in vertical section` of a gas engine showing the invention as applied. Fig. 2 is a detail longitudinal section of the rotary valve. Fig. 3 is an enlarged section onthe line X-X of Fig. 2. Fig. 4 is an enlarged section on the line Y-Y of Fig. 2.

In the drawings, A, B, C and D represent a series of engine cylinders in which pistons 2 are' reciprocably mounted in the usual ,.manner; the pistons 2 being connected to a crank shaft 3 by means of piston rods in the usual manner. The upper ends of eachA of the engine cylinders .A, B, C and D'are formed with inlet and exhaust ports 4 and 5, respectively, which ports open into the interior of a valve casing 6, extending in a horizontal direction above the engine cylinders A, B, C and D, as shown in Fig. 1. The ports 4 and 5 in the cylinders A, B, C and D are arranged in alinement on the longitudinal center of the valve casing 6, and are spaced a. suitable distance apart. Mounted in the valve casing 6 is atapered tubular valve 7, which is designed to rotate in the valve casing 6, as will be later described, to alternately open and close the ports 4 and 5. The valve casing 6 is constructed to'conform to the tapered surface of the valve 7; the outer surface of the valve 7 slidably-contacting the inner surface of the valve casing 6 so as to form a sufficiently tight joint between the ports 4 and 5 as to prevent thepassage of the gases from one port to another. Means are provided for adjustingl outer periphery and is adapted to be screwed into a cap 1l which closes the large end of the valve casing 6; the cap 11 being secured to the valve casing 6 by means of bolts 11', or in lany other suitable manner. Formed onv the outer end of the valve 7 is a conical trunnion 12 which extends into and is surrounded by the crowding ring 10, the inner face of which conforms to the outer Vface of the trunnion 12. In adjusting the valve 7 longitudinally in the valve casing 6, the crowding ring 10 is turned in itsthreaded bearing in the cap 11 so as to bear against the conical face-of the trunnion 12, and thereby crowd the valve 7 lengthwise into the valve casing 6 until the required degree of contact between the valve 7 and the valve casing 6 is obtained.

The set-screw 8 is mounted on a frame 13 carried by the valve casing G and extends in a horizontal direction s0 that its inner end will bear against the outer end of the shaft 9 which is formed on the longitudinal axis of the valve 7; the set-screw 8 forming an adjustable abutment for limiting the longitudinal movement of the valve 7 when the latter is crowded lengthwise into the valve casing 6 by means of the crowding ring 10.

Mounted on thel shaft 9 is a beveled gear 14 which meshes with a similar gear on a vertically `disposed shaft 16, which is designed to be rotated from the crank the valve casing' in which enen to shaft i3 through. a series of gears indicated at l? in such nianner as to rotate the gear ill and therebj7 rotate the valve "l through the shaft The mounting et the beveled gear on the ft, 9, may he eiieeted by splining or such other well lnioivn ineens as will perinit the shaft to slide relatively toy the lwhen aailiusting the valve in the inanner stated. Mounted Within the valve T and extending longitudinally therein is a tube 1S the outer periphery7 of which is spaced from the inner periphery of the valve 7, forming an annular chamber betn'een.the -walls of the valve 7 and the `Walls of the 'tube 1S. The inner end ot the tube 18 terminates a short distance frein, the

inner end et the valve 17 while its outer end passes t irough'theltrunnion 12 en the outer end et' the valve 't' and connects With a eed pipe llleading :troni any suitable source of supplv, and which is attached to the cap 11, :is shown in Fig. 1, and through which explosivev gases are designed to be delivered continuously tothe interiorn of the 'valve 7.

Formed in the Walls oi the valve l are a series of diainetrically opposed perorations 20, which are designed to register with the' inlet ports si of the engine cylinder, when the valve l is rotated; the pert'orations 2()k snoivi in Fig., o.

sages leading through the valve 7 in aline' nient with the exhaus ports 5 so as to previde connnnnieations between the interior of the argine cylinders and the atmosphere, through the poi s and ports 22, formed in In, haust pipe as shown in Fig. 1.

ln the operation of the iziveul'ion the ex- ]filosivf.- mixture is delivered to the interior et the vulve 7 through the conduit 19, and t'; t .-o 1S; the valve lis rotated from the ,nk snuit 3 tnrouggh the 17, shaft 16, gears flow-li and the shaft il, at a ratio of r volution of the valve l" to one revoiu et. the crank When the perioiations 20, in the valve 'l' register vwith the ports -iin the enginecylinders. the explosive mixture will be drawn into the Lexi-- gine eylindi on the down stroke of the stones the area of the pertorations 2O and their positions in relation toeaeh other beine" such to open the ports l to forni a ion between the interior of' the and the valve 7 on the suo ,he strokes of the pistons 2; the

ports l 'being closed by the walls of the valve during the compression, explosion or scavenging strokes of the pistons 2.

The perforations 21 are of such area and are disposed in such relation to each other and to the ports 5 as to open the latter on the exhaust or scavenging strokes of the pistons 2; the Walls of the valve 'i' closing the ports during the intake compression and explosion strokes 01": the pistons 2.

lVhen the ports o are'openiug to the perforations 21, the het exhaust gases will pass through the tubes 2Q- and he discharged to the atmosphere through the pipe 9.3; the het gases passing' through the tubes 22, heating the latter in such manner as to superheat` the explosive mixture in the valve 7 previous to its being delivered to the engineeylinders; the explosive mixture on passing through the tube 18 circulating around the' tubes 22 passing transversely therethrough. By discharging the explosive nnxture into the valve 7 adjacent its inner end it will. be

1. In an internal combustion engine7 the combination with a. series of engine cylinders of a horizontally disposed. valve cas 4ingiforined with inlet and exhaust ports opening); to the engine cylinders, a rotary tubular valve in said easing; having dia- Inetrically: spaced ports therein arranged to register with the inlet portsj and having diau inetricnlly disposed passages leading therethrough registerable with the exhaust ports7 and a tube attending longitudinally into the valve to a point near the inner end thereof for introducing an explosive. mixture inte vthe interior of thetubular valve.

2. ln an internal combustion enfri'ne, the combination with a. series of engine cylinders el a horizontally disposed valve casing Aformed with inlet and exhaust ports opening; to the engine cylinders, a rotary tubular valve in said easing having diametrically spaced ports therein arranged to register 'with the inlet ports, and having dianietrically disposed passages leading therethrough registerable with the exhaust ports, and means for introducingA an explosive mix-- ture into the interior of the tubular valve, ineluding tube extending longitudinally into the valve and opening' adjacent the inoribed iny invention, what .l claim and desire to-seeure by Letters Pat- A ner end thereof, and a conduit vleading to said tube,

3. In an internal combustion engine, the combination with a series of engine cylinders of a horizontally disposed valve casing formed with inlet and exhaust ports opening to the engine cylinders, a rotary tubular valve in said casing having diametrically spaced ports therein arranged to register` with the inlet ports, and having diametrically disposed passages leading therethrough registerable with the exhaust ports, and means for introducing an explosive mixture into the interior of the tubular valve, in-

cluding a tube extending longitudinally into the valve and opening adjacent the inner end thereof, and a conduit leading to said tube, said exhaust passages passing through the tube and separated therefrom by cylindrical walls.

4. In an internal combustion engine, the

the valve and opening adjacent the inner sie end thereof, and a conduit leading to said tube, said exhaust passages passingthrough the tubeand separated therefrom by cylindrical Walls, and means for adjusting the tubular valve lengthwise in its casing.

In combination with a multiple cylinder combustion engine having inlet and exhaust ports for each cylinder, a-hollow cylindrical rotary valve having inlet ports through its Wall and communicating With its interior and adapted to register with the cylinder inlet ports, interior webs extending across the hollow valve and forming exhaust l ports entirely within the valve and extending completely therethrough, there being an exhaust port situated oppositely to each of the cylinder exhaust ports with Which port the valve exhaust ports register when they register with the cylinder exhaust ports.

6. In a device of the character described, a revoluble hollow cylindrical valve having inlet ports through its peripheral wall, Webs extending interiorly across the hollow valve and forming exhaust ports extending through the valve from outer face to outer face thereof.

In testimony whereof I have' hereunto set my hand in the presence of two subscribing witnesses.

enonen w. rouxn.

Witnesses WALTER REIMERS, GENEVIEVE S. DONELIN.

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