US1178769A

US1178769A - Rotary valve.

Info

Publication number: US1178769A
Authority: US
Inventors: Arthur D Whidden
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-04-08
Filing date: 1915-04-08
Publication date: 1916-04-11
Anticipated expiration: 1933-04-11

Description

n. WHIDDEN. ROTARY VALVE. APPLICATION FILED APR. 8. I9I5- Patented Apr..11, 1916 Y 2 SHEIETSQSHEET 1- I am i Ev? 4; i

A. D. WHIDDEN. ROTARY'VALVE. APPLICATION FILED APR. 8. ISIS.

2 SHEETS-SHEET 2- 530;31 D

I I I 1 v Patented Apr. 11, 1916.

- ject of my UNITED STATES PATENT OFFICE.

an'rnmtn. WHIDDEN, or ELYRIA, OHIO,

ROTARY VALVE.

Application filed April 8, 1915. Serial No. 20,036.

To all :whom it may concern:

Be it known that I, ARTHUR D. Wnnmnn, a citizenof the United States, residing at Elyria, in the county of. Lorain and State of Ohio, have invented certain new and use .ful Improvements in Rotary valves, of

which the following is a specification.

My present invention relates to new and useful improvements in rotary valves for in-v ternal combustion engines, the primary obinvention being the provision of an 'im roved rotary valve of vthat general type isel'osed in a patent granted; to me February 9, 1915, and 'bearingtt the No.

v The primary object of my invention is the provision of a rotary valve which will con- "trol both, the'supply ofexplosive mixture .theiprovision of a rotary valve i p the ports-are so arranged'that pressure upon a water engine equipped [with my valve and the'exhaustin an engine of th-e fourpeycle type and in which the x'jc' valve is chargingof the engine cylin pacity (it-the doubled in order to insure complete er upon the n'cl complete in the engine noke of the enintake stroke of the engitn'e venting of the exhaust g fse cylinder upon the exhaus s gillewf V i.

Further objects of my/invention c nsist in whicli the valve'is balanced, 'in the provision of jaeketingfor cooling both the engine cylinder and the-.v'alve, and the provision means for lubricating, the valve.

With these and other objects in view, my invention will be more fully described, illustratedin the accompanying drawings, and then specifically pointed out in the claims which are attached to and form a part of this application.

In the drawings: Figure 1 is a central, vertical, longitudinal Sectional view taken through a one cylinder internal combustion improved rotary Fig. 2 is a vertical sectional .view taken onthe line 22 of Fig. 1, looking in the direction of the arrow; Fig. 3 is a horizontal sectional View taken .on the. line 3-4 '7 and 8,' are vertical sectional views taken on. the lines5-5, 66, 7-7 and 8-8 of Fig.- 3, illustratingthe relative positions of the ports of-the valve and valve casing, the

valve being shown in exhaust position.

I Correspondingand like parts are referred Specification of Letters Patent.

. in all theviews of .tuting the crank lindrical valve tated in its casing,

Patented Apr. 11 1916.

to in the followingdescription and indicated the drawings by the same reference characters.

For thesake of clearness and to insure a (so full understanding of the construction and operation of my improved valve I have illustrated it in connection with a one cylinder, four-cycle internal combustion engine of conventional type, it being understood that it may be employed with equally "good 7 results with an engine having any number of cylinders. The engine consists primarily of two castings lt) and 11, the former consticasing of the engine and the latter including the cylinder and' valve casing, together wih the.va'rious passages leading from the cylinder to} the casing. These castings are boltedhorotherwise secured together in the u's'na l" crank case are providdwith alined bearings 12 to receive a crank shaft 13. r The cylinder and valve casing are ,prefer= ably cast as a uni leakage, either of the explosive mixture, ex

t in order'to prevent all haust gases or water fromthe water jacket;

ing of the cylinders and valve and said cast-ti ing includes an outer casing 14, an inner casing or cylinder proper 15, a hollow c- S- casing 16, extendingli'in spaced relation above the top of Ithecylinder and longitudinally of the outer casing 14, and ducts 17 and 18 forming passages for the admission and emission of the gases 9;).

to and from the cylinder. The space within the outer shell 14, surrounding the cylinder, valve casing and ducts, forms a water chamher through which circulation of water may be maintained in any desired manner; not shown, to prevent oi'er-heating of the cylinder andvalves A piston 19 is mounted in the cylinder andopei'atively connected by the piston rod 20 with the wrist pin 21 of the crank shaft. The valve casing 16 opens at its ends through the front and rear walls of the outer casing 14 and one end of the valve casing is closed by a'cap 22, while the. other end is closed bya cap'23 provided centrally with an opening 24 for the passage of a trunnion formed upon one ,end of the valveproper'and by which the valveis roas will be later explained. The valve casing is provided along the horizontal plane of its-axis and upon both I sides with a multiplicity of

ports

25,26, 27 and 28, the ports upon one side being armunicating with the port closely within -the duct llTto the duct 18 ranged in staggered relation with respect to the ports upon the other and ducts 29 lead from these ports to alined ports in the casing 14. The duct 17 communicates with that duct Q9 communicating with the port 26,- while the duct 18 communicates with that duct 29 communicating with the port 2.7. An intake manifold 30 leads'from :1 ca rbureter Bl to that duct 29 communicating with the port, 25 and an outlet or exhaust manifold 32 leads from that duct 29 com- '28, the

ports

25 and 28 thereby constituting inlet and exhaust ports of the valve casing.

A yalve proper 33 is mounted for rotation in the valve casing and this valve consists of a hollow cylindrical shell or body fitting the valve casing and hearing at its ends against the caps and 23, one end of the valve being provided with a centrally formed trunnion 34 which projects through the opening Q-l of the cap 23 This trunnion carries a sprocket 35 and a sprocket chain 36 istrained about the sprocket 35 and about a second sprocket 37 carried upon the forward end of the crank shaft 13, the relative size of the sprockets being such that the valve is turned during every two revolutions of the crank shaft. Although I have shown the valve as driven by a chain and s 'n'ockets from the craiik shaft, it will oi course he understood that the valve may be driven in any suitable manner, the idea being merely to provide means for rotating the valve at half the speed of rotation of the crank shaft. lhis' valve body is divider into cndchambers '38 and 39 by an intermediate, transverse partition wall 40, the

fuel supply to the engine cylinder being supplied through both these chambers simultane msly and the exhaust gases from the engine cylinder also passing through these chambers, as will be later pointed out. For this reason. the peripheral wall of the chamher 39 is provided with ports it and 42 adapted to simultaneously register with the valve casing; ports .25 and '26. respectively, in one position of the valve to permit exlosive gases coming from the intake manifold 30 to pass into the. chamber 39 and throilgh the port 26 and ducts 29 and li'into the cylinder '15. is also provided with a passage 43 and a duct it is formed within the chamber 38 to con'inuuiicat'e between this port 43 and a port 45 formed in the wall of the valve and in longitudinal alinement with the port all. This port 45 consequently registers with the port :27 and when the ports 41 and 42 register with the ports and 2( it will be clear that a portion of the explosive gases entering the chamber 39 will pass through and so to the engine, cylinder. the'clnlr re therefore entering theengine of the chamber 3 to register 26 of the valve casing when the ports 46 and lhe wall 40 of the valveof operation of my cylinder through both of the ducts ll and 18. In like manner, the peripheral wall of the chamber 38 is provided with ports 4" and 47 adapted to simultaneously register with the ports 28 and .2? in one position of the valve to permit or:- liaust gases from the engine cylinder to pass through the duct 18 and chamber 38 to the exhaust manifold 32. Furthermore, the wall ll) is provided with a second port l8 and a duct lt leads from this second port to a port-50 formed in the peripheral wall with the port *7 of the valve register with the ports 28 and '27 oi. the valve casing. Because of this, exhaust gases from the eylinder will also pass through the duct 17 and duct 4 to the chamber 38 and from this chamber to the exhaust manifold 3'2. At this point it should be noted that, looking at the engine from the front. the rotary valve turns in a clockwise direction; With this in view,- it should be.

noted that the port ll is formed at substantially 107 degrees angle to theport 50 which is formed in the same horizontal plane with the ports l6 and ti and that the port 47 is formed at substantially an angle of 107 degrees to the port 45 which is in the horizontal plane of the ports 41 and 42. In other words, the ports are so arranged that, assuming the valve-is in the position shown in the drawings, which is midway of its exhaust movement, 10? degrees turning movement in a clockwise direction will bring it to a position midway of its intake with the port ll of the valveregistcring with the port :25 oi the casing, the port l2 'registeringwith the port 26 of the casin and the port if registering with the port 4 ol the casing. "I i i The inner face of thevalve casing, about each of its ports. is cut'away to seat a pack ingvring 51 of anysuitahle type. in order to prevent lea kagc between the valve and valve casingand the outer ends of those ductsiilt) which comn'iunicate with the ducts 1i. and 1.8 are closed by threaded'plugs to prevent escape of gases from the engine.

The top of the outer upper portion of the valve casing 1am be supplied to the valve between it and its easing. A threaded passage 5t leads through the casing-ll and upper portion of the cylinder wall 15 to receive a spark plug by which the ehargesin the cylimlcr may be ignited. I i I From the foregoing description, takeh in connection with the drawings. the manner rotary valve will be readily understood and but slight lescription is necessary.

Assuming that the engine is at the middle casing l-l and the f of its exhaust stroke and that the valve 1.;

at a corresponding position, which' 'i's the condition of the engine and valve illustrated in the drawings',-the exhaust gases from the cylinder will pass through the duct 17,

, alined ports 26 and 50, the duct 49 and the n'even'enteringthe chamber 39.. It will also- I be .cle'ar that 'upon a little over a quarter actation of the valve in a clockwise direction, the

ports

46 and 47 will both pass the valve casing ports 28 and 27, respectively, as also will the port 50 with respect to the port 26 This approximate quarter revolution of the valve will, however, bring the port 41 of the valve into registration with the port 25 of the casing and the port 42 into registration with the port 26 of the casing. Furthermore, the port 45 will, un-' der thesegcircumstances, register with the valve casin port'27. Suction of the engine will thereif n drawan explosive mixture from "the bureter through the intake manifold 3(l and alined ports 51 and 41 into the valve chamber 39. The explosive mix ture will pass' from this valve chamber partially through, the alined ports-42 and 26 and thefduct 1 7 to the engine cylinder and partially; through the duct 44 and alined ports 45 and 27 andrluct 18 to the engine cylinder. ,It will, therefore, be clear that all fuel drawn into'the cylinder will pass through the chamber 39 and none of it through the chamber 38 of the valve, and that fuel will begsupplied to the cylinder throughboth,the, ilucts 1;? and 18., The above described ph S' course, constitutes the mid-position of the intake stroke of thefiihginea will be seen by reference to Figs. 5 to -8 ofthe drawings, allports of the valve will be out of @iegistrationwith the corresponding'ports crztjhe valve casing during the succeeding-half Erevolution of the valve which constitutes the compression and explosion strokes of the engine. Upon a 'further turning of thevalve to complete the whole revolution, which takes place once during each two complete revolutions of the crank shaft, the valve will again occupy the position .shown in the drawings, which is the exhaust position thereof.

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

1. In a gas engine valve, a cylindrical valve casing having an inlet port, an outlet port and a pair of ports, both adapted for communication with an engine cylinder, a

rotatable in the valve casing ion of the valve, of'

hollow cylindrical valve closed at its ends and having means for successively establishing communication between the inlet portandboth ports leading to the engine cylinder and the outlet port and both ports leading to the engine cylinder. a

In a gas engine valve, a cylindrical valve casing having an inlet port, an outlet port and zp'pair of ports, both adapted for communioalt ipd with an engine cylinder, a hollow cylindrical valve closedat its end rotatable in the valve casing, a partition extending transversely of the valve and dividing it into inlet and exhaust chambers, ports in the walls ofthe chambers adapted, in certain positions of the valve, to register with the inlet and outlet ports of the valve casing, a pair of ports in each chamber adapted to register with the ports communicating with the engine cylinder,'and ductsleading one from one port'of each pair of ports into the other chamber.

In a gas engine valve, a cylindrical valve casing having an inlet port, an exhaust port and a pair of ports adapted to communicate with an engine cylinder, a hollow cylindrical valve closed at its ends rotatably mounted in the valve casing, a partition wall extending transversely of the valve to provide inlet and exhaust chambers, the inlet port and one of the cylinder ports of the valve casing being opposite one chamber and the exhaust port and the other cylinder port of the valve casing being opposite the other chamber, an inlet port'formed in the valve and adapted to register with the inlet port of the valve casing, an-exhaust port formed in the valve adapted to register with the exhaust port of the. valve casing, a air of ports formed in the wall of one cham er and adapted to register with one of the cylinder ports, one when the inlet port of such chamber registers with the inlet port of the. casing and the other when the exhaust port of the other chamber registers with the-exhaust port of the valve casing, a ductleading from said latterport through the partition wall to communicate with the exhaust chamber, the wall of the exhaust chamber having a pair of ports adapted to register with the other port leadingfrom the cylinder, one of said latter ports being adapted to register with its valve casing port when the exhaust port of the valve registers with the exhaust port ofithe valve casing and the other port being adapted to register with the cylinder port when the inlet port of the valve registers with the inlet port of the valve casing,

haust port and a pair of ports,.each adapted to communicate with an engine cylinder, a hollow cylindrical valve closed at its ends rotatable in the valve casing, a partition extending transversely of the valve and dividing 1t into inlet and exhaust chambers, the

"valve being provided at either side of the partition with ports adapted-to successively register with the cylinder ports of the valve casing, ducts leading from such ports in the valve through the partition wall of the valve, whereby in certain positions of the valve communication may be established from one of the ports communicatingwith the cylinder to that chamber not opposite such port, additional ports formed in the wall of the valve to successively register with the ports in the valve casing which communicate.with the cylinder, an inlet port formed in the wall of one valve chamber adapted to register with the inlet port of the valve casing, and a port formed in the wall of the other chamber adapted to register with the exhaust port of the valve casing. I 5. In a .gas engine valve, a cylindrical valve 'asing having an inlet port and an exhaust port, a pair of ports each adapted to communicate with an engine. cylinder, a hollow cylindrical valve closed at its ends rotatable in the valve casing, a partition dividing the valve into inlet and exhaust chambers, the valve having a port formed in the wall of the inlet chamber to communicate with the inlet port of the casing and'a port formed'in the wall or the exhaust chamber to communicate with the exhaust-port of the casing, and means operable upon rotation of the valve" for successively placing both of the cylinder ports of the casing in simultaneous communication with the valve chambers.

6. In a gas engine valve, a cylindrical valve casing having a pair ofports adapted to communicate with an engine cylinder, an 9 inlet port and an exhaust port, and a cyl1n-'