US1873012A

US1873012A - Gas engine valve

Info

Publication number: US1873012A
Application number: US396664A
Authority: US
Inventors: Michael J Moran
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-10-02
Filing date: 1929-10-02
Publication date: 1932-08-23
Anticipated expiration: 1949-08-23

Description

Aug. 23, 1932. M. J. MORAN GAS 'ENGINE VALVE Filed ocu 2. 192s lNvEH "rolv ATTQRNEYS Patented Aug. 23, 1932 UNITED y s'rAvrEsA lsvaoljz PATENT oEElgcE MICHAEL J. MORAN, oF MonRIsToWN, NEW JERSEY GAS 'Encritivia VALVE` Applicaton'led October 2, 1929. .Serial No. 396,664.

controlling the exhaust of the burned gasesfrom the engine cylinder, both intake and exhaust valves being driven by the engine crank shaft.

Another object of this inventionis to provide .means for lubricating the valve mechanism described, which comprises over-sup plying the valves with lubricant, the latter being supplied continuously in greater quan- 2D` tity than is necessary, whereby eiiicient and sufcient lubrication is obtained at all times. These and other objects of thisv invention are obtained in va preferred embodiment thereof, which comprises intake and exhaust 2B valves of the trunk or cylinder type placed on ,opposite sides of the cylinder which they serve and being driven'directly by means of spur gears from the crank-shaft of the engine. The valves are supplied with oil from so their own reservoir, sothat the lubricatingoil is always good, being uncontaminated by grit, carbon {iakes,etc., ywhich found in the crank case oil.

For a better understanding of the invention, reference is made to the accompanying drawings, inV which Figure 1 is a vertical section, partly schematic, of a piston valve engine embodying my invention as seen along'the line 1 1 of Fig. 2, during the intake stroke;

take piston of Fig.V 1; i

Fig.

and

Fig.`4 is an'enlarged'fragmentary `view of one ofthe piston valves showing the oilseal ring. A e c e In the drawing, numeral 10` designates 50 Vthe engine block having a series of vcylinders A' chamfered at their upper innersurfaces to forman oil collecting groove 41, which com- Fig. 2is a vertical section'through the in-` valve as seen along the line `3- 43V 3 is ya plan view of the new engine,v

11, corresponding pistons 12, and a common Y crank shaft 13 to which each `piston 12 isV connected bythe connecting rod 14. 'Each cylinder is fitted with therusual spark plug 15,` the intake port 13 and the exhaust port 17. v

Adjacent opposite sides of the engine'cylinder l12 are the valve cylinders 18 and 1 9, the former containing the intake valve and the latter the exhaust valve 21. These valves are cylindrical pistons andare driven from the engine crank shaft 13, the intake valve 20` being connected by connecting rod 22l to an v 'individual crank-shaft 23 rotating in noil resl 65 ervoir 24 and'having itsconnected spur gear 25 driven by the spur gear 26 of engine crank shaft 13. The engineV crankshaftgear v26V also drives the gear 28l of crank-shaft 29, which is connected to exhaustpiston 21 `by connecting rod 30 and rotates in voilreservoir 31.` Cover plates 53 permit accessto the valve crank-shafts 23 and 28. v

The intake valve 20 is generally of the trunk type, but has an oblong diametral port`32 which is adapted to register onone side with the intake port 16 of the engine cylinder 11, and at its opposite side with the intake passage 33 through the water cooling jacket 34, and connected to the carburetor by connections not shown. Between the headl35 and the ceiling 36 of the piston 20 is an oil reservoir 37 Vwhich discharges throughpassagesV 38 around port 32 into the bell and from there into the reservoir 24 below. The 1 head35 and skirt 39 of the vpiston 20 are Vequipped with the

oil rings

40 and 40, re-

spectively, which are shownin greater detail Y in enlarged Fig. 4.l TheseA oil rings 40 are sey = 'oil reservoir 24.

sion strokes of the engine piston 12, thus preventing all leakage of gas into the valve chambers. Inasmuch as the eXhaust valve 21 is constructed in exactly the same Way as i the intake valve 2() just described, it Will not f' connection with the crank-shaft 13' of the enn gine or the like. These. oil pumps e5 andere through pipes 46. .and 46 inject oil under pressure into

tanks

47 and 47 located immediately above int-alie valve 2,0 and exhaust valve 2l, respectively, It will be seen that 'the

cylinders

18 and 19 in which respective valves 2 0, and l2l move, are headless and serve as broathers to relieve the pressure and. suction created. by the movement of these piston T valves..

The tanks. 47 and 47 are closed. by @over plates. t8 and 48', respectively, which are readily removable for access vto the valve chambers. Mounted upon the under sides of respective cover plates 4,8 and 4:8 are

screens

49 and 49" against, which the oil injected by pipes 46 impinges. .A portion of this oil passes through these screens and falls into sumps 50. and 505, from which it flows through respective down pipes 5l and 5l into oil reservoirs 24 and 3l' respectively, Cooling the head of engine cylinder ll and the Walls of valve cylinders 1.8 and 19.

The remainder of the oil, which was.

caught by

screens

49 and 49', drips downwardly therefrom upon the heads of valve pistons 2O and 21, beine retained thereon. because of the surrounding; walls of. the valve cylinders during the downward and upward strokes, of the corresponding valves. until at the highest point of their upward stroke the headset the pistons lie flush with the upper rim of their cylinders, whereupon the oil rcmaining thereon flows off intol sumps 5.0 and 50', However, the majority of this oil creeps along the cylinder Wall to be collected by oil rings 40, from which the oil passes through oil holes 42 intooil reservoir 37, oil passages 38 and through. the bell .of the valve inte the Some of this oil is trapped in well 37 because the .openings to oil psssages 38 are placed above the bottom thereof, and this trapped .oil cools the port of the valve, this being especially effective Ain eX- haust valve 2l. The oil flowing `through the oil holes 38 cools the port at its sides. Smllarly, the .oil collected by .oil ring .40 in the skirt of lthe valve, flows ythrough loil holes .42" into reservoir 24, In this Way apoyen-,sup-

pb7 of oil is provided whereby ,a thoroughY lubrication of the cylinder valves is provided. The lower ends of the

valve cylinders

18 and 19 and valves 2O and 21 are lubricated by the splash of their respective crank shafts 23 and 29.

Th-e operation of the7 valve mechanism and the lubricating means therefor will be apparent from the foregoing description thereof. It will be seen that the new valve mechanism has many important advantages. Among these advantages are the decreased number of parts as compared to present valve mechanisms, long' life because of effective lubrication and freedom from excessive heat, the only part of the valves which is subjected to the flame, during- .the ring stroke being 'the rings 43., The valves are light and ,inexpensive to manufacture and require no adjustment nor are there any parte which are liable to breakage, deteriora-tion, or wieessivey Wear, such as springs, rockers, poppets, or the like. Furthermore, .the intake and exhaust paths of the gases are direct and unobstructed bvl valve heads., stems or the-like,tln1s allowing .shorter intake and exhaast. periodsand assuring yeonfiplete Charge ine; and scavenging, a

While av preferred 4eniloodinse.nt of. this vention has been illustrated and described herein, .it is to be understood that. .the .inven tion is not limited thereby, but is susceptible of many variations in forni and .detail Wthf in its For example, While each engine cylinder has been. illustrated es 'equipped with separate Jnatalie and exhaust vel-ves, a single pistonv valve ofthe type described hevf ing intake and exhaust ports. or employing a single port for both intake and, exhaust, vvill. be found preeteel upon smaller bore enf gines- I claim:

l, 1n an internal v@whilstion engine having a ges W ber thereot, the combination o a slide valve bevi. a port adapted to register with seid Cylindger port., Passages in said valve surrounding the seid port thereof for eenling the same, and a pump for continuously supply.- ng a cooling vfluid to seid Passages.

2. In an internal eombnstion engine hevf ing a gas port in the Wall ,Of the eggplosion Chamber thereof?, the combination of e slide valve having a port. adapted to register with said .cylinder port, oil tanks at. the opposite ends of travel lo fsaid valve, and means driven by said engine for applying oil from seid tanks to the .corresponding ends of seid velve- 3. In an internal combustion engine hav: ing a Agas port in the wall of the explosion chamber thereof, the combination of a slide valve having a port adapted to register with said .cylinder port, said valve having longitu-` dinal oil passages around said valve port, ,an oil ter-1k, .and means driven by the engine for continuously transferring oil rein said tank ,in the well .of the es lesion ehemf to the head of said valve for flow through the passages thereof. 4. In an internal combustion engine having a gas port in the wall of the explosion chamber thereof, the combination of a hollow slide valve having a port adapted to register with said cylinder port, said valve being arranged for vertical movement and having perforated walls for collecting oil, an oil reservoir at the lower end of travel of said valve, and means driven by the engine for transferring oil from said reservoir to the head end cfr/said valve. 5. In an internal combustion engine having Va gas port in the wall of the explosion chamber thereof, the combination of a slide valve having a port adapted to register with said cylinder port, said valve being arranged for vertical movement, means supplying oil to the sliding surfaces of said valve, oil collecting grooves in the sliding surfaces of said valve, and passages from said grooves through the interior of said valve for discharging the sulplus oil collected by said grooves.

6. In an internal combustion engine having a gas port in the wall of the explosion chamber thereof, the combination of a slide valve having a port adapted to register with said cylinder port, said valve being arranged for Y vertical movement, means at the top end of travel of said valve for deflecting oil upon the head thereof, and means driven by said engine for forcing oil against said means.

7. In an internal combustion engine having a gas port in the wall of the explosion chamber thereof, the combination of a slide valve having a port adapted to register with said cylinder port, said valve being arranged for vertical movement, a vertical screen mounted adjacent the top end of travel of said valve, and means for directing oil against said screen, whereby a portion thereof passes through said screen and a portion is collected thereby to drip upon the head of said valve.

8. In an internal combustion engine having a gas port in the wall of the explosion chamber thereof, a slide valve having a port adapted to register therewith, an oil tank having a communication with said valve means for introducing oil into said tank, and a deflector in said tank for deflecting a. portion of the oil introduced into the tank by said means through said communication to said valve.

9. In an internal combustion engine having an explosion cylinder, a vertical valve cylinder adjacent said explosition cylinder, a

piston valve in said valve cylinder for con-v trolling communication to and from said explosion cylinder and driven by the engine, means for oiling the walls of said valve cylinder, an oil reservoir in the valve, oil'collecting rings on the sliding surfaces of said valve,

and connections between said collecting rings and said reservoir, whereby the oil collected by said rings is discharged into said reservoir.

10. In an internal combustion engine havino an explosion cylinder, a vertical valve cylinder adjacent said vexplosion cylinder, a piston valve in said valve cylinder for controlling communication to and from said explosion cylinder and driven by the engine, an oil tank in the lower end of said valve cylinder, a chamber above said valve and explosion cylinder, a screen in said chamber above said valve cylinder, means for directing oil from said tank against said screen, whereby a portion of the oil collects upon said screen and drips upon the head of saidcylinder and the remainder of the oil passes throughV said screen and collects in said chamber for cooling said expansion and valve cylinders, and passages from said chamber and through said valve for returning surplus oil to said tank.