US1123233A - Valve for internal-combustion engines. - Google Patents

Description

G. P. BRESSE. VALVE PoR INTERNAL coMBUsTmN ENGINES; APPLICATION FILED MAR. 23, 1914. l, 1 23,233 Patented Jan. 5, 1915.

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VALVE Pon INTERNAL ooMBUsTmN ENGINES.

Y APPLICATION FILED MRZ/3, 191,41. 1,123,233. vPatnted Ja11.`5, 1915.

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CHARLES PARKER BREESE, OF NORFOLK, VRGINA.

VALVE FOR INTERlJAL-CGMBUSTION ENGINES.

Specification of Letters Patent.

Patented Jian. 5, 31915.

Application filed March 23, 1914.. Serial No. 826,712.

,To @ZZ whom it may concern Be it known that l, CHARLns PARKER Barnes; a citizen of the United States, and resident of Norfolk, in the-county of Non folk and State of Virginia, have invented certain new and useful improvements in Valves for Internal-Combustion Engines, of which the following is a specification.

flhis invention relates to valves vwhich have sliding movement and which open and close ports by moving into registry with and then away from saine, and particularly to that class of such valves which employ two sliding members with ports that register times when afpassageway is to be opened, but move out of registry in order that the valve ports may pass the Xed opening without establishing communication therewith, when the'passageway should be closed.

@ne feature of the present invention consists in having the valve members in the forin of concentric hollow bodies provided with a hoigsing independent of but in com,

' the heat of exhaust gases may be conserved for the purpose of conditioning the incoining new charge of fuel to which end, the invent-ion contemplates a single valve structure for both the exhaust and intake passages, actuated so that it controls these passages successively and in a manner that will cause the walls of the valve structure to be heated by the exhaust gases and to imparthcat to the incoming charge even though tht' valve chamber forming pa-rt of the exhaust passage-may be separate and distinct from that forming part of the intake passage.

A further object is to provide effective means of economical construction for' actuating the valve structure" from a suitable shaft, to whichend a further feature o-f the vinvention consists in employing a single actuating member, preferably in the nature of a link connectionhaving a traveling movement foiwphasing valves-arid an oscillating movement relatively to the valve members,

for bringing their ports into and out ofA registry and, therefore, determining thel opening and closing, of the passageways.

through the valve structure; this operating means being preferably in the form of a link pitman having a cross head extending between the valve members in position to develop relative movement of said members as the cross head oscillates, and a stem eX- tending rigidly froni said cross head to a suitable crank whereby to develop both the traveling and oscillating movement of the link member thus provided.

Further objects relate to details of construction wliereby the apparatus is economical to produce and convenient to keep in order as will appear more at length from the following detail description.

ln the accompanying drawings-Figure l is a vertical axial section of a reciprocating engine and a valve embodying the several features of the present invention; the main shaft being assumed to rotate clockwise, and the valve shaft counter-clockwise; and the parts being in position assumed at commencement of exhaust. Figs. 2, 3 and 4 are detail views of the valve structure showing the parts in position of fuel intake, compression stroke, and working stroke, respectively. Fig. 5 is a section on the line .5X-5X of Fig. 1. v

Referring to the drawings in detail, C represents the working cylinder, P the piston and S the crank shaft of an internal combustion engine, while E represents an exhaust passage, F a fuel supply passage and .s a valve shaft which, for purposes of illustration, is shown as being driven with two to one speedreduction, through the gear wheels s and S.

l represents a single port in the cylinder C, which is used for both fuel intake and ein haust. Y

l and 3 are a pair of concentric cylindrical valve members suitably housed to reciprocate ina valve chest el in communication with the port 1 of the main cylinder and with the exhaust passage E and fuel passage l?. The inner valve member has upper and lower chambers c, f, adapted to constitute parts'fof the exhaust and supply passages, respectively, when the valve members are properly positioned. The member 2`is provided witli. a combined exhaust and supply port-2a, andthe member 3 with an exhaust ros port 1 at suitable intervals, and said members 2 and 3v are also provided with exhaust ports 2b 'and 3b which register with exhaust Passage E, the port The inner member 3 is further provided with an independent supply port 3 which is adapted to combine with port 2a to'uopen" tli'ep'ort l'into the fuel chamber f "at certain' intervals-and while the port 2a still remains opposite port-N1; and said members 2 and@ are provided'with supply ports 251' and 3d which l m'unicationto said chamber f from the fuel supply p ass'agepF, whenever ports 2a, 3c meet at the ,port l.v y Furthermore, the members 2 and 3 are adapted to move relatively so that even when port 2 is passing port l, or port 2b or 2d ispassing the fuel passage F, no communication will be established across the valve, as for instance during either the compression or the workingstroke of the engine.

CAQ

^ From the foregoing, it will be seen that the valvev structure has a traveling movevment to develop the different phases of valve action and relative movement between its respective members to determine when the valve shall be opened and closed. These movements'are preferably imparted through a single member 5 which is in the form of a link connected to extensions 3", 2x of the respective valve members at 5 and 5b and extending rigidly to the Ashaft s, which may be i provided with a crank bend or any of the recognized mechanical equivalents thereof, such as an eccentric. rOne of the connections, for instance that shown at 5b, provides lost motion in a transverse direction to compensate for changes in angular position of the link relatively to the valve members;

The operation of the valve structure is as follows: Assuming the engine shaft S to rotate clockwise and the valve shaft s to be rotated anti-clockwise, and with the piston P approaching its lower limit under eX- pansion of the ignited charge, the valve members will bear the relation to each other shown in Fig. 1 and will begin to uncover the port 1 and establish its communication with the -exhaust passage E, which vrelation will continue until piston P executes its upward scavenging stroke, when the crank shaft S will pass its upper limit and rock the link 5 from the position of Fig. 1 to the position vof Fig. 2, and bring the intake port `3 opposite the port 1 and port 3d opposite the passage F and establish free passage for fuel intake, as shown in Fig. 2. -During this shifting of the inner valve member 3, the outer valve member 2 has remained approximately stationary,lowering effect incident to the rocking `of the link being very slight in view of the distribution of forces incident to the travel1 of the crank s from whenever ports 2, 3a meet atare adaptedto open com-- the position of Fig. 1 to the position of Fig.l

.2, The working piston now moves downcompression stroke 'is completed and the working stroke is under way, the crankjs vhas again rocked to the right and the valve members shifted iplatively tothe position shown in Fig. 4, after which the crank s begins to move the valve members upward ,until at completion of the working stroke,

when the piston P is again in the position of Fig. 1, ports 2, 3av on one side, and ports 2", 3b on the other side will be in registry and the exhaust position will begin to develop as already eXplained y The particular method of operating the valve members is desirable, becausepermitting the valves to be readily withdrawn by.

merely disconnecting from the crank s and removing the cap 4a of the housing 4., l Both the cranks S and s are located in the same crank chamber, and the parts may Ithus be subjected to the same splash lubrication.

As indicated in Fig. '5, the horizontal dimensions of the several ports and passages may be relatively large and this in turn provides for ample capa-city without undue vertical dimensions, and consequently admits of reduction in the vertical travel of the valve members. By the close relationship of 'the exhaust and supply passages andthe 'integral character of their walls, heat from the exhaust will be appreciably distributed tioning the latter.

I claim 1. An engine valve comprising overlapping members having traveling movementl by* their traveling movement, and a single driving connection for said valve'members having a traveling movement for defiecting the traveling movement vof the valve members, and an oscillating movement for dei veloping relative movement between said valve members.

42. An engine valve comprising overlapping members having traveling movement and movement relatively to eaclilother; said members being interposed between the ports t'be connected and being` cpnstrueted with ports brought into registry with each other 130 to the incoming fuel and will assist in condil v iic,

by their relative movement and into communication with the ports to be connected by their traveling movement', and a single driving connection for seid valve members heving a traveling movement for deeoting the traveling movement of the valve members, and an oscillating movement for developing relative movement between said valve members; seid driving connection comprising e link member connected with the respective valve members et points oset laterally from the direction of its traveling movement.

3. In an engine valve, the combination of a pair of overlapping members aclepted t0 move longitudinally and relatively to eeeh other7 a link member for actuating said valve members and ay shaft having c0nnection With said link member, which develops both traveling and oscillating movement therein; seicl link member being eonneee l with the velv members et peints separaten in e direction transverse to the direction el their travel; whereby tliej are shifted re tively to eeeh other by the oscillating movement of the link.

2l. ln combination with the neletivelyr eiproeeting velve members? e link member having e eross heed connected with Seial valve members, :incl-a stem, enel a shaft imparting both travel and oscillation to link member.

The foregoing specification signed at llerfolli, Virginie, this 28th (ley of February, 191e.

PARKER BREESE,

Copies of this patent may be obtained for five eents eeen, by ndressin 'the Commissioner et' "Washington, $3.

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