US1284826A

US1284826A - Gas-engine.

Info

Publication number: US1284826A
Application number: US83304414A
Authority: US
Inventors: Lester E Van Hise
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-04-20
Filing date: 1914-04-20
Publication date: 1918-11-12
Anticipated expiration: 1935-11-12

Description

E. VAN HISE. GAS ENGINE.

APPLICATION FILED APR. 20. l9l4.

' Inventor. ZeJZ'e .Z/azzizzse.

fliZ-y.

Patented N 0V. 12, 1918.

ran onion.

GAS-ENG.

pulse from the combustion-of the fuel may be had at every stroke of the piston or pistons.

It is an object of the invention to provide an internal combustion engine with a piston which is capable of compressing air outside the combustionchamber, some of which is employed, first for scavenging the said chamber and then for carrying a compressed explosive mixture into said chamber, a valve mechanism being employed for controlling the movement of the compressed materials.

It is a further object of the invention to provide a gas or internal combustion engine with an air compressing chamber outside the combustion chamber and a mixing chamber also outside the combustion chamber, the piston of the-engine being capable of compressing air in said chambers both for scavenging the combustion chamber and for introducing air mixed With fuel for securing proper explosions within the combustion chamber.

With these and other objects in view, the invention comprises certain novel constructions, combinations and arrangements of parts. as will behereinafter fully described and claimed. I

In the accompanying drawing forming a part of this specification:

Figure 1 is a vertical central sectional view through an engine constructed in accordance with this invention, the plane of the section extending through the chambers in which the air is compressed by the piston.

Fig. 2 is a vertical central sectional view through said engine taken upon a plane at right angles to that of Fig. 1.

Fig. 3 is a horizontal sectional view taken upon the line 3-3 of Fig. 1;

Fig. 4 is a detail view showingthe carbureter in top plan view and the spray- The engine of the present invention is pro- I Specification of Letters Patent. Patented New.. 12., T3918, Application filed April 20,1914. Serial No. aaaore.

vided -with chambers which communicate With the combustion chamber, the piston being adapted to compress air in said chambers before it is admitted to the combustion chamber, a-single valve controls the inlets from said chambers into said combustion chamber. The engine is a two-cycle engine in action receiving an explosion and an impulse therefrom at every reciprocation of the piston. in the accompanylng drawing the preferred structure of the engine has been disclosed and the details and features thereof will now be more specifically described, reterence being bad to said drawing. Tn said drawing 5, indicates the combustion chamher and power cylinder of the engine; 6 a tandem cylinder otlarger diameter than the cylinder 5. A piston 7 moves in the cylinder 5 and is provided with an enlarged portion 8 forming a piston for the enlarged cylinder 6. The

cylinders

5 and 6 are mounted upon a suitable framing 9 within which are guides 10 for directing the movement of a cross-head 11. The cross-head 11 is rigidly secured to the lower end of a piston rod 12, the upper end of which is fastened in the upper end of the piston 7. The lower end of the cylinder framing usually rests upon a plate 13, through which the piston rod 12' passes. A packing gland 14: is provided in said plate 13 and surrounds the piston rod 12 so as to prevent the leakage of air about the same.

The cross-head 11 ispivotally connected with a pitman 15 which extends to and is journaled upon a bearing 16 formed upon the engine crankl'l. The crank is formed in the crank shaft 18 which is journaled in usually provided with a water jacket 22 for 'keeping it cool.

The cylinder casing is further provided with passages. in which air is compressed, one of said passages as 23 usually extending up one side of the engine while the-other pasage as 24 extends up the othe side thereot.

The lower end of the passage 23 communicates with the lower end of the cylinder 6 nose and the air compressed therein be allowed to rush into the upper end of the cylinder 5. The air will thus force all oi the spent gases from the cylinder and into the exhaust outlet, thoroughly scavenging the cylinder and leaving only fresh pure air therein. As the piston 8 passed the valve 43, it began to draw in the air from the atmosphere behind it so as to fill the upper part of the cylinder 6 again The up stroke of the piston Will cause the air thus drawn into the cylinder 6 to be highly compressed in the small passage :2 and thus' be prepared for rushing into the combustion chamber as soon as the valve will permit. The upward stroke of the. piston ct course, closes the exhaust ports 19, and since the small amount of air in the cylinder 5 will not be compressed to anything like the same degree as the air iii-the larger cylinder 6, there will be a great dillerence between the compression in the passages 2t and the upper end of the combustion chamber. As soon as e piston nearly reaches the upper end of its stroke, the valve :25 will connect the Qt with said cylinder and the highly compressed charge in said passage will rush into the cylinder 5 carrying with it the sprayed gasolene or other fuel which will. at that time be drawn from the nozzle of the carburetor, B tore the piston 7 quite reaches the top of its stroke, the valve as will close the top of the cylinder 5 and the charge will be fired by Y the spark plug. Upon the downward movement of the piston under the eFfect oiv firing the gaseous mixture, the operation just de scribed will be repeated again. lt will be evident that there is no chance for the exhaust gases to remain in the cylinder 5 and the cylinder will not only be quickly and thoroughly cleared of such gases, but will be somewhat cooled by the iii-rushing fresh air from the passage 23, leaving the cylinder ingood condition for the next firing charge, As the piston 8 passes the valve 4 :3 in its upward stroke, air will be drawn into the lower portion of the cylinder a whereby there Will always be an ample amount of air below the piston for compression in the passage 23. The by-pass pipe equalizes the pressure with respect to the carburetor so that the gasolene will be properly fed from the nozzle when the compressed air rushes into the cylinder 5, the gasolene being also thoroughly and properly controlled by the float 29 and its valve 28. In practice the small amount of suction produced in the passage 1'24- },vlien the piston 8 is making its descent in the upper half of the cylinder 6, is found not to disturb the action of the carburetor and if any gasolene from the nozzle is drawn into the upper end of the passage 2%, it will simply be coininingled more thoroughly with the air or the inrushing charge, The continual use of fresh atmospheric air in the down the temperature of the engine. The

' throttle valve 36 and the cam shaft 33 being under the control of the operator of the engine at all times, makes it. possible to readily adjust and control the richness of the mixture which is admitted to the com bustion chamber. it will be evident that many of the minor details of the mechanism may be varied andmechanical equivalents thereof employed, Without departing in the least from the spirit of the invention.

What is claimed is:

1. An internal combustion engine comprising a cylinder, a piston having an extension portion capable of compressing air outside the combustion chamber upon each stroke thereof, the engine having air receiving passages outside the combustion chamber, one of said passages'having means for introducing fuel connected therewith and leading to the outer valve controlled end thereof, the said piston extension operating, first by scavenging the combustion chamber with the air compressed on one stroke, and

then for carrying a charge of an explosive mixture with the air compressed on the other stroke, for operating the engine, and a valve operating in conjunction. With the movement of the piston for controlling the entrance of said compressed air to the combustion chamher,

2. An internal combustion engine having a cylinc er, a piston in said cylinder and arranged to receive an impulse from the firing of an explosive charge upon one stroke, said piston having an enlarged portion for compressing air for scavenging the cylinder upon the same stroke, a storage chamber within which the air may be compressed, said storage chamber being arranged to receive air compressed by enlarged portion of the piston and to deliver it into the outer end of the combustion chamber, thesaid enlarged portion or the piston also being capable of compressing air upon its other stroke and causing it to carry and mix with it fuel for charging the combustion chamber of the engine vvith an explosive mixture, means for delivering fuel to said compressed-air to form said explosive mixture, a valve for positively controlling the admission of compressed charges to the combustion chamber and means for operating said valve in accordance with the movement of the piston.

3. An internal combustion engine having a piston, a cylinder having storage chambers outside the combustion chamber, the said piston being capable of compressing air in one of said storage chambers upon one stroke for scavenging the combustion chamber of the engine, and capable upon the other stroke or compressing air and forcing the same through the other storage chamber the said having fuel. introducing means connected therewith, means for delivering fuel into said, chamber-{whereby charges of air and explosive materials will be delivered into the combustion chamber of the engine and a single valve arranged to'admit explosive and scavenging charges successively upon each reciprocatlon of the piston;

4. A gas engine comprising a cylinder aflording a combustion chamber atone end of the engine piston, 'a piston moving there,- in and having an enlarged extension outside the combustion chamber for compressing air, a chamber adjacent to the cylinder for receiving compressed air, a valve for directing the air into the inletend of the cylinder after each explosion therein, the

engine being also formed with a second 5. An explosive gas engine having cylin- (lei-s in tandem, a piston operating partly in one cylinder and partly in the other,

one cylinder being adapted for use as a combustion chamber, while the other cylin-- der is employed for compressing charges of air, a valve for introducing 'air into the said lattercylinder, separate passages for receiving charges of air from the compressing cylinder, means for introducing an explosive material'into one of said passages and a valve interposed between the said passages and one end of the combustion chamber whereby compressed airimay be introduced into the combustion chamber first for scav,

enging the same, and second for. carrying an explosive mixture nto the same. 6. An. exploslve gas engine havlng tandem cylinders of difierent diameters, a piston having portions of large and small. diameters for fitting into said tandem cylinders,

means for introducing air into one of said tandem cylinders, the piston operating therein being capable of compressing the air in one cylinder and delivering charges thereof into the other cylinder, means for introducing fuel material into one of said charges and a rotating valve having a port capable of directing a scavenging charge of the other. I Z-. An explosive-gas nasaeae pure air into one-of the cylinders andthen of delivering a charge of an explosive 'mixture into said cylinder and means for firing said charge, the engine having passages for transferring the air from one .cylinder to and lowercylinders, the upper cylinder be-, ing formed 'witha combustion chamber at one-end thereof, while the other cylinder is provided with an air, inlet, a valve for controlling said air inlet, "the engine casing being provided withpassages leading from the lower cylinder topoints adjacent the c'ombustionchamber of the upper cylinder, [means for admitting fuel to one of'said passages, a rotating valve for controlling the same, the upper cylinder being also pro-.

vided with outlet ports controlled by a I piston moving in said 0 linder, a piston, and driving connections or controlling said valve connectedwith the crank shaft of said engine, whereby its movement will be regulated in accordance with the movement of the engines pistons.

8. In a two-cycle engine having tandem cylinders,the power cylinder of which-is of less diameter than the other-cylinder, a tandem piston having portions fitting in said cylinders, the engine casing. being provided with compression receiving chambers outsidethe combustion chamber, one being, connected with'one' end of the larger cylinder,

while the other is'connected with the other end of said larger cylinder, a valve con,- trolling the inlet of air to the larger cylinder, the smaller cylinder having outlet ports for exhaust materials, a carbureter, a valve controlled nozzle adapted to lead mixture enriching materials into one of said compression chambers, a throttle valve control engine having upper ling the passage of mixtures from one of said compresslon receiving chambers and a valve common to both sa1d com-pression receiving chambers and one end of the power cylinder whereby the compressed charges may be alternately directed into said cylinder whereby the cylinder may be first scav- 'enge'd and then re-charged with explosive material.

I In testimony-whereof I have hereunto set my hand in presence of two witnesses.

- LESTER E. VAN HISE.

- Witnesses; 1

CAssELL SEvERANcE, CHARLES C. MONTGOMERY.