US997136A - Device for supplying oil to internal-combustion engines. - Google Patents

Description

P. D. JOHNSTON. DEVICE FOR SUPPLYING OIL TO INTERNAL COMBUSTION ENGINES. APPLICATION FILED JULY 7, 1906.

997,136. Patented July 4, 11911.

A um CONNECTED O ENGINE GOVERNOR, V

7 FECIPROCATED 5V THE ENGINE.

THE ENG/NE Attorneys.

iINrrnn sia'frns PATENT OFFICE.

lPHILIP DEVEREUX JOHNSTON, OF CGLD SPRING, NEW YORK, ASSIGNOR TO AMERICAN OIL ENGINE COMPANY,,A CORPORATION OF NEW YORK.

DEVICE FOR SUPPIJYING OIL T0 INTERNAL-COMBUSTION ENGINES.

. Specification of Letters Patent.

Patented July 4, 1911.

Application filed an 1906. serial No. 325,113. I

To all whom it may concern:

Be it known that I, PHILIP DEVEREUX JOHNSTON, a citizen of the United States, residing at Cold Spring, in the county of Putnam and State of New York, have invented a certain new and useful Improvement-in Devices for Supplying Oil to Internal-Combustion Engines, of which the following is a description.

The object I have in View is the production of a device for use inconnection with internal combustion engines, particularly of the type which employs the denser hydrocarbons which are vaporized or atomized with water or air under pressure.

By the present invention I seek-to govern the quantities of oil or water introduced into the engine by positive means actuated directly at the pump.

Further objects of the invention are to produce means for permittin this to be done, such means being simple, possessing few parts, and which are sure and certain in their operation.

These and further objects will appear from the following specification and accompanying drawings.

I attain these objects by the mechanism illustrated in the accompanying drawings, which show one embodiment of the invention, and in which F igure 1 is a section of the pump, the governing valve, and the mixing valve; Fig. 2 is a section on the line 22 of Fig. 1; and Fig. 3 is a section on the line 33 of Fig. 1 looking toward the pump.

In all the views like parts are designated by the same reference characters,

In carrying out my invention 1 provide a pump which is actuated by a cztni or other means operated from the engine so as to give an impulse to inject the liquid into the mixing chamber atthe proper period of the cycle of operation of the engine. This pump works with an invariable stroke, and a valve is provided to regulate the amount of liquid injected by the pumps, a loaded valve being connected to a bypass to per-- init the escape of the surplus. In connec tion with this pump is a mixing valve, by

age aroundthe top of the piston.

means of which oil and water, each introduced through separate nozzles from separate pumps, will be vaporized and mixed in connection with a stream of air introduced under pressure into the same mixing chamber. The complete mixture will pass into the combustion chamber through a cutoff valve, which will be operated at the proper time to prevent back pressure from forcing the products of combustion into the mixing chamber.

In the drawings the reference character 1 represents the casing for the pump, in which a hollow piston 2 is reciprocated. A packing and gland are provided to prevent leakof the piston is provided with a port, which is closed by a ball valve 3. Communicating with. the central opening of the casing 1 is an annular port at which communicates with a by-pass 5. Liquid is supplied to the pump through the port 29, which communicates with the annular port 4. Above this annular port 4 is a second annular port 6, which is closed by a spring-loaded valve 7, the

The end works a slide valve 13. This slide valve 13 is provided with an annular port 14 intermediate its ends, which communicates with the port 6 and also with an exhaust port 15. The valve 13 is hollow and is provided with equalizing ports 16 in its head. .It is operated by means of a spindle 17 which passes through a packing and gland at the top of the valve chamber 12. The ports 16 per? mit equalization of pressure inside and outside of the valve, so that it may be readilyv moved Within the chamber. The ports 16, permitting the valve to be balanced, allow,

20 I the configuration of this port a uniform it to be moved with very little force neces sary to be exerted uponit. This is of'impo-r'tance in connection with automaticgov-,

erning mechanism, the power available to be exerted by the governor being limited, and it being desirable that the valve be capable of being moved with the smallest possible amount of energy.

The size oftheannular port 14: is such, and its location is so arrangedin relation to the port 6, that it will always be in comsition shown in the drawing, it may more or less completely close such port. The port nection with each mixing valve.

15 is reduced in cross-section at 18 adjacent to the valve 13 so as to provide a narrow vertical opening, which constitutes a port or little width in proportion to'height. By

movement of the valve will produce a sub stantially uniform opening or closing of the passage, which would not be the case if the size of the port were not so reduced as toproduce a vertical port, as shown. The port need notnecessarily be rectangular as the same results may be secured by means of a port which'is not exactly a true rectangle in shape. A screw-plug closes the lower extremity of the valve chamber 12 and permits the removal of the valve, and. a removable plug also closes the bottom of the pump chamber 1 to permit removal of sediment and other foreign matters.

In connection with the pump thus describedis used a mixing valve, it being understood that two pumps are used in con- The connectingpipe between the valve and the pump is shown in dotted lines. The mixing device comprises a body 19 having nozzles 20 screwed therein, one of each such nozzles being for oil and the other for wa-' ter, and each being connected to a pump, as described. The orifices of the nozzles are opposite one another, as shown in Fig. 2, so that thejets of oil and water. will strike against each other and the oilwill be completely atomized and mixed with the finely divided water. An air nozzle 21 at right angles to the other two nozzles is provided, through which air under pressure is admitted into the mixing chamber 22. This nozzle 21 is shown as closed by hand valve, by means of. which the extent of opening may be regulated.

The mixing chamber communicates with the retort 23\through a cutofi' valve 2 1. This cut-ofi' valve is shown to be a slide valve having acentral port which permits communication between the mixing chamber and the retort. This valve is elevated by a spring 25, as shown, and depressed by thestem or rod 26, the latter passing out through a packing, as shown, and being connected to an element on the engine to move it at the proper time during the cycle of operation of the engine.

The controlling valve 13 is connected to the governor through the agency of the rod 27.- A turnbuckle 28 is interposed between the rod 27 and the valve stem 17 so as to vary the length of the rod and by means of which the position of the valve may be altered in relation to the governing mechanism. By providing one of these turnbuckles for each valve, the roportions of oil and water admitted into t e mixing chamber may be varied as desired.

In operation, the pump 2 steadily forces the liquid (oil or Water) into the port 6. A certain proportion of this liquid passes out through the port 15 into the mixing chamber, the proportion varying according to the position of the valve 13. The surplus liquid passes through the bypass valve 7 into the bypass 5 and into the an-' adjacent to the valve so as to provide a longitudinal passage.

2. In an internal combustion engine, the improved means for controlling the admission of fuel thereto, which comprise a mixing device and a pump, a: controlling valve between the pump and the mixing device,

joperatin means for the valve, and means for varymg the position of .the valve in relation to the operating means. 3. In an internal combustion engine the improved means for controlling the admission-of fuel thereto, which comprises a mixing device and a pump, a controlling valve between the pump and the mixing device, and means for operating said valve from the engine comprising a connection having a turn-buckle therein by means of which the position of the valve may be adjusted.

4. In combination with an internal combustion engine, a pump for supplying fuel thereto, comprising a cylinder, a hollow piston reciprocating therein, a valve in the bottom of said piston, intake and outlet ports in said cylinder, a bypass connecting said ports,'a loaded valve in said by-pass This specification signed and witnessed perinitting passage of liquid only from 1:11; this 3rd day of July, 1906.

out et ort to the in et ort, orts in sai piston iegistering with s zzid oiitlet port at PHILIP DEVEREUX JOHNSTON all positions of said piston, and a valve con- Witnesses: trolled by the engine governor for control- LEONARD H. Dm, ling the effective opening of said outlet port. AUG. LONG.

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