US1979071A - Engine - Google Patents

Description

1934- J. w. KINNUCAN ENGINE Filed April 27, 1933 3 Sheets-Sheet l INVENTOR.

c/2m es W/ZZ'rzrzzzaan Oct. 30, 1934. J. w. KINNUCAN ENGINE 3 Sheets-Sheet 2 Filed- April 27 1933 INVENTOR.

Jim es Wflz'nmzc'an ATTORNEY.

3 Sheets-Sheet 3 INVENTOR.

cfames Wflz'rm zwarz ATTORNEY.

J. W. KINNUCAN ENGINE Filed April 27, 1933 Oct. 30, 1934.

Patented Oct. 30, 1934 warren STA can: any oerce.

ENGINE James i W: Kinnucam. Detroit, Mich; AmflicationrApriL27; 1933, Serial $10,668,153 fii'fllaimsa (Cl. 123-81) My inventionzrelates: to engines andlmore-par tiGUIQIfiYl'tO engines of: thQSIBBVQGVfil-VBvWPQ; thisinventionf: pertaining; more: particularly: to. the construction; of: the sleevewvalver means: f.0r:con-.-

Ciltrclling: the: valving: functions of the engines.

In engines. of: the sleeve: valve type as, afore-- said and in particular thosezengi'neshavingaflat; head in whichzth'are-entrant cylindenhead portion is omitted. itr. has: been; foundl desirableto Hi provide cylindersintakezandexhaust ports spaced axially; of.1'the:cylinden; Generally the; pistons associated. with; engines: of". this: type: are. ar-- rangewfor: cooperating:operationwith the .-sleeve: valve meanstso as: toipartly control. the-engine;

cyclical eventsza'ndi in someginstances sit. is found. desirable to: space: the: cylinder. intakes and; ex-.- hausttports: at distance; less; than: the; stroke. of. said sleeve valveemeanssimorder-to maintainythe' engine heighttwithimreasonable limits; Furtherg. it is desirable to provide a plurality: of=. such cyleinder: intake and" exhaust ports in. orden to pro.- vide sufficientt port: area for the. intake. and ex? haust' ofitheenginegasesi. Thesforegoingtfactorsw were foundtolbe controllinggonthe designof an- 253 engine-of: the; aforesaid: type; and: because; of: the. factthat the exhaustports-iweres preferably lo;-; cated on" the same side: oilthe: engine; asrthe; inf take pcrt's, ittwas found thahthaparticularzport. construction: had; a; great: deal; to; do; with: the

303': engine design:

object of my" present; invention. to: COIL-r structa an: engine: of. the; sleeve; valve type' in! which the aforesaid difficulties are-substantially eliminated.

an improved portingarrangement andassociated: sleeve valve means for: controlling: said. ports in engines of the: aforesaiditype, .whereby; to: pro, vides an engine: having. an. improvedi. operating 03 performance and:aniincreasedupowerroutput, but:

of minimum size and weight:

A further-- object of; my present invention. lSi to: construct an engine of 'the aforesaid type-prm vided; withsleeve' valve" means so constructed- -andarranged as to permit a relatively longi tudin'a'l spacing of the cylinder" intake and ex haust port's-of the-type specified? in which the:

sleeve ports controlling one of the cylinder ports" .is caused to travel" in a path extending, in the region intermediate other cylinder ports.

For a more detailed understandingof'myin.- vention, reference. may be, had to. the. accompanying drawings which. illustrate. one. form.

which my invention may assume, and in which:

Another' object of: mys inventioni is: to. provide:

Fig: .1 a". vertical transverse sectional; view" of;

a typicalengine. cylinder constructed in accordance with;my.rinvention.

Fig. 2. is. axpolt; diagram showing the relation-- ship betweemcylinder. andisleeve intake and-ex.-- haust. ports,-. saidi portsbeing respectively post-- tioned. at the. beginning of the power stroke,

Fig. 3; is. a. port; diagram showing: the saidports: at the time when the lower. exhaust. opens,

Fig.4 is-a; port diagramshowingthe position of; the ports when-the upper exhaust opens,

Eig. 5; is a. port diagram. showing. the. position ofzsaidiportswhenthe lower exhaustzopens,

Fig.4: 6 isa. port diagram showing the relationship.-betw.een saidports whenthe intake opens,-

Fig; 7. is. a. portv diagram showingv theupper exhaust closing;

Fig; 8: is. a port. diagram. showing, the; intake: closing, and

li'ig 9 is; atiming diagram illustrating. theangular position of: the crankshaft. for. the vari 011s.- critical positions of the sleeve valve means.

In. the accompanying drawings-I have illustratedan engineA which in general includes. a cylindenblock lmhaving-acylinden 11, closedtat its outer. ends by, a cylinder. head. 13 which. is adapted torbe. secur.ed.to.the cylinder: block by bolts 12? or other. suitable fastening devices. Sleeve-valve means- 13. are associated. with the engine cylinder. 11! and are:- driven. from; the en gine crankshaft 14 by any suitable drivingmechanism. In: the: illustrated, embodiment of. my invention as; shown in-thez drawin s; L have. pro-- vided. asleeve valve'ofthe combined movement type;.said sleevehaving a combined oscillating and reciprocating motion with. respect to the cylinder and. sleeve axes whereby any: point on. thesleevetraversesra closed; path. in performing. its valving. functions; said. sleeve valve being preferably driven fromthewobble shaft 15 by meansof: the wobble: yoke orlink. 16 connected withlthesleeve by means of the ball and socket connection 17, this Wobble shaft being driven, from the; crankshaft by means of a chainor. other suitable driving mechanism.

The-engine" hereinillustrated iscommonly re.- ferrectto asan: engine ofthe fiat-head type; that; is, thecylinder head. is not providedwith a. rerentrant head portion depending. Within. the, cylinder and. the sleeve valve means. 13 is. so arranged as to have the upper portion. of saidsleeve exposed. to, the combustion. chamber C1. The head carriesthe usual spark plug. or. other suitable ignition device having spark terminals,

16. extended. into. the combustion chamber. C. 110

, connected to the crank 18 of the crankshaft 14 by means or" a suitable connecting rod 19.

The engine cylinder is provided with intake ports 20, and upper and lower exhaust ports 21 and 22 respectively, and it will be noted that the exhaust port 22 is spaced axially inwardly of the cylinder from the intake port 20 and is preferably located on the same side of the engine.

I preferably provide a plurality of such intake ports 20 which are spaced angularly around the engine cylinder, and. also a plurality of such exhaust ports 22 which are in turn spaced angu larly around the cylinder. The sleeve 13 is provided with intake and exhaust ports 23 and 24 respectively, some of which are adapted to cooperate with the cylinder intake and exhaust ports '20 and 22 respectively for controlling the valving functions of the engine.

My invention is particularly concerned with cylinder ports 20, 22 and the cooperating sleeve ports 23, 24. In the port diagrams shown in Figs. 2 to 8 inclusive, I have shown a curve 25 which graphically illustrates the path taken by anypoint 26 on the sleeve during one cycle of the sleeve movement. It will be noted that the major axis 2'? of the elliptical curve 25 is greater thanthe distance 28 between the intake and exhaust ports 20 and 22 of the cylinder. In Fig. 2,

' I have illustrated a number of positions of the sleeve exhaust port 22 as the same is moved into the region intermediate two of the cylinder intake ports 20. Position I shows this exhaust port leaving the aforesaid region, position designated by II shows this port entering said region, while position designated by III shows the port 24 near its outermost position of travel. In the claims I have described this action by specifying a sleeve exhaust port which is arranged to traverse a path extending into the region intermediate a pair of adjacent cylinder intake ports. It will be noted that the path taken by the sleeve exhaust ports is such that only a portion of said path extends into this region intermediate adjacent cylinder intake ports. It will be also noted that the distance 29 between adjacent cylinder intake ports is less than the sum of the distances 30 and 31 respectively measuring the width of the exhaust port 24 and the total oscill lating movement of said ports as claimed by the curve 25.

It will further be noted on observing Figs. 2 to 8 inclusive that the piston substantially masks said sleeve exhaust port when the same is travelling in that region lying intermediate the cylinder intake ports as said piston is travelling substantially in the vicinity of its outermost position of travel. shown in these figures by dotted lines, together with arrows indicating the motion of the'piston.

The arrangement as described in the foregoing paragraphs provides a construction which permits the cylinder intake and exhaust ports 20 and 22 to be relatively closely spaced axially of the engine cylinder.

In its broadest aspects the principles of my invention may be incorporated in engines other than those of the type employing a sleeve valve of the combined movement type as herein illustrated. Therefore, I do not limit my invention to the specific type of sleeve valve means as shown, since beneficial results may be obtained by employing this invention with other types of engines Although I have illustrated but one form of The piston outer edge being my invention and have described in detail but a single application thereof, it will be apparent to those skilled in the art to which my invention pertains that various modifications and changes may be made therein without departing from the spirit of my invention or from the scope of the appended claims.

What I claim as my invention is:

1. In a sleeve valve engine having a cylinder ported for intake and exhaust, sleeve valve means ofthe combined movement type having intake and exhaust ports respectively cooperating with the cylinder intake and exhaust ports =Whereby to control the engine cyclical events,

said sleeve exhaust port being arranged to traverse a path extending into the region intermediate a pair of adjacent cylinder intake ports.

2. In a sleeve valve engine having a cylinder providedwith intake and exhaust ports spaced axially of the cylinder, sleeve valve means of the combined movement type having intake and exhaust ports respectively cooperating with the cylinder intake and exhaust ports whereby to control the engine cyclical events, said sleeve exhaust port being arranged to traverse a path extending into the region intermediate a pair of adjacent cylinder intake ports.

3. A sleeve valve engine having a cylinder ported for intake and exhaust, sleeve valve means having a movement axially of the cylinder and provided with intake and exhaust ports respectively cooperating with the cylinder intake and exhaust ports to control the engine cyclical events, said cylinder intake and exhaust ports being spaced axially of the cylinder an amount less than the strokeof the sleeve, one of said sleeve ports being arranged to traverse a path extending into the region intermediate a pair of adjacent cylinder ports cooperating with said other sleeve port.

4. A sleeve valve engine having a cylinder ported for intake and exhaust, sleeve valve 5. A sleeve valve engine having a. cylinder ported for intake and exhaust, a single sleeve valve means of the combined movement type in which any point on the sleeve traverses .an elliptical. path with respect to the cylinder and sleeve axes and having intake and exhaust ports cooperating with the cylinder intake and exhaust ports to control the engine cyclical events, said cylinder having a plurality of intake ports angularly spaced apart an amount less than the sum of the oscillating motion of the sleeve and the width of the sleeve exhaust port, said cylinder exhaust port spaced axially inwardly of the cylinder from the cylinder intake ports, said sleeve exhaust port being arranged to traverse a path extending into the region intermediate a pair of adjacent cylinder intake ports.

6. In a sleeve valve engine having a cylinder ported for intake and exhaust, sleeve valve means of the combined movement type having intake and exhaust ports respectively controlling the cylinder intake and exhaust ports, a piston operable in said cylinder and cooperating with said sleeve valve means for controlling in part the engine cyclical events, said sleeve exhaust port being arranged to traverse a path extending into the region intermediate a pair of adjacent cylinder intake ports, said piston operating

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