US1049815A - Starting mechanism for internal-combustion engines. - Google Patents

Description

U. WINDRLER.

u MECHANISM FOR INTERNAL comm rum ENGINES,

DAY & G. E.

STARTIN APPLICATION FILED JUIQB 13. 3912 Patented Jan. '7. 1913.

QUNN/Nq Pow/r10 UNITED sT rnsr ENT OFFICE.

CHARLES DAY ANDG'EORGE E. WINDELER, OF STOCKPORT, ENGLAND, ASSIGNOBS T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF YORK.

STARTING MECHANISM F OR INTERN AIL-COMBUSTION ENGINES.

Specification of Letters Patent. I Patented J and? 1913.

Application filed June 13,1912. Serial No. 703,397.

' prevent." it from being delivered ,to the pulverizer. The instant, however, that the by pass valve of the patent isopened it permits air from the blow through the pulverize'r and its oil carrying pipe and discharge oil and high pressure air through the by-pass.

To all whom, it may concern Be it known that we, CHARLES DAY and Gnoaon E. \Vmnnnnn, subjects of the King of Great Britain, and residingntlstockport county of- Chester, England, have invente certain new and useful Improvements in Starting Mechanism for Intcrnal-Combustion Engines, of which the following is a The object of the present invention is to specification. provide means for preventing the blastof he present invention relates to the type air from acting 1n the manner s ecitied of apparatus forming the subject matter of above. To accomplish this a norma open English Patent 6,890 of 1908 to William P. valve is provided between the blast and the Sillince and ourselves, and is an improveby'pass opening which "automatically closes ment thereon. whenever the by-pass valve is opened'a'nd high pressure blast to 15. With internal combustion engines operat the blast tends to drive oil through it ing on the constant pressure plan wherein In the accompanying drawing which illuspure air is heated by compression'in the cyl-' trates one of the embodiments of our in inder and combustionehamber to a temperavcution, Figured is a partialview in eleture above the igniting temperature or the vation of an engine fitted with our improved fuel, it is necessary to inject the fuel, such mechanism; Fig. 2 is a View partially in'secas crude oil, into the combustion chamber tion showing the bypass valvewhich is y means of a blast of air. This blast com tuated by the starting lever and ithe blast, monly has a pressure of about 900 pounds actuated valve,- and Fig. 3 is a perspective er square 1nch for the larger size engines view of the blast actuated valve. v

26 ut it maybe slightly more or le s The fuel I 5 indicates one of the cylinders of an enis delivered by its pump to the pulwrizer nine and 6 the head thereof. Mounted in or device for spraying fuel into the cvlmthe head is a pulvcrizer 7 of suitable conder at a pressure somewhat greater than the struciion for discharging the fuel [into the .blast essure, and said latter pressure, excombustion space of the cylinder, In the ists suhstantially at all times in the pulwrpulvcrizer is a needle valve 8 which conizer and opposes the fuel pump pressure. trols the admission of uel and y'lthe blast The direct admission of fuel and its blast of air to the cylinder. Fuel is admitted to of air to the combustion chamber is under the pulvcrizer by the pipe Sand the blast of the'control of a needle \alve that moves in I air is admitted by the pipe 10,'sa'id pipe be- 85 response to cam control. It is customary to ing connected to any suitable source of supstart these engines by a compressed gas, ply such as a compressor or storage tank. suchas high pressure air for example The needle valve is opened at the pro er If in starting the engine as an air. motor periods by the bell-crank lever 11 an is fuel is allowed to accumulate in the pulvciclosed by the compression spring 12.

izer from successive pump strokes by rea- 13 indicates a fixed spindle that is carried son of the needle valve being prevented. in suitable brackets. Sleeved on the spindle from opening, there will be an abnormally is an eccentric 14 which is fastened to the heavy charge admitted the first time said starring handle 15. The handle and the ecvalve opens and itspiston and cylinder procentric are soar-ranged that when the handle duce ower. n many instances this has is moved to t e position shown in full lines been t e'c'auseof destructive results. The it throws the roller '16 out of engagement structure; illus rated in said patent overwith the cam 17 mounted onthe shaft 18. comes this objection and the movement of This means that the cam is free .to-rotate ,the starting lever to ,the starting position auwithout raising the needle valve. This po tomatically opens shy-pass Valve which bysition of the parts is known, as the .starti passest-he fuel delivered; by the pump to a position. The running suitable atmospheric. pressure receptacle and dotted lines, and it will observedgtli at-the pgsition is shown in mannenholds the valve off of its seat.

-valve is, also provided with guides 30 and roller 16 carried by the lower arm of the bell-crank leveris in c ntact with the periphery of the cam 17, and hence the needle valve will be opened once. for oar-h rcvoll|- tion of the camshaft, said shaft in a four cycle engine running at one half the speed of the main shaft.

In order, to prevent fuel from being discharged 'by the fuel pump 19 into the pulverizer 7 when the parts are 'in the starting position, a by-pass valve 20 is provided that controls the lily-passport 21. This valve is nol'lilfllly pressed against its seat by the coiled compression spring As it is necessery to Open the valve at the same time the handle. 15 is moved to the starting position,

I 24; that is mounted on a rock shaft 25.

by the handle.

this movement is utilized to actuate the bypass valve.

Thechamber in the pulverizvr is always subjected to the pressure of theblast of air issuing from the pipe 10. When the bypass by-pass port .21.

valve 20 is open there is a tendency for high pressure air to'flow from the pipe 10 through the pulverizer and by way of pipe 9 to the interior of the valve casing, 27 containing the by-pass valve.- Obviously if there is nothing to prevent this, the air from the blast in blowing through the pipe 9 will discharge all of the oil therein through the In addition to this it I means a loss of air and the noise due to the discharging/of such high pressure fluid is very ObjPCtlOflflhlO. To prevent this action from taking place, a valve 23 is provided and located in the valve casing 27, its axis being perpendicular to that'of the valve 20 in the presentembodiment. The valve is best shown in Fig. 3 and is provided with a head having a beveled face that engages with its seat, In the head are small passages or notches '29 through which the fuel normally flows in passing from the pump 19 'to the piilverizer. The passage -of fuel in this The a reduopd portion between them to facilitate the pasti'ge offueL'through the byrpass ;As 7 before stated .theval've' 28 I is normally open, buhjusbas soon as the by-pa'ss valve is opened and the pressure; on the lefthand side of the valve 28 is reduced, the blast pressure from the pipe 10 acting on the column of fuel in the pipe 9 closes the valve 28. After the engine well started, the

start ng lever 15 is thrown to the dotted line position when th parts operate in theirnormal manner. \\"e have not illustrated the valve whi h :HllllllI-i air to the cylinder for-the purpose of .-tarting. and which is commonly known as the starting valve, nor the mechanism for operating it, since it Seems unne essary to an understanding of our invention.

The invention has been described in connection with a four-stroke cy le engine, but it can also he used with engines having different numbers of strokes per cycle.

in accordance with the provisions of the patent statutes, we have set forth what we believe to he the best embodiment of our invention; but it is to be understood'that the drawing is only illustrative and that our invention can be carried out by other means. v

lVhat we claim as new and desire to secure by Letters Patent of the United States is 1- '1. An internal combustion engine in combination with a source of fuel supply under pressure, a blast means for discharging fuel into the engine, means forby-passing fuel and preventing it from entering the engine 1 while starting, and means preventing the blast means from discharging through the bypass when it, is open. A

2. An internal combustion engine in combination with a source of fuel supply under pressure, an air blast means for introducing fuel into the engine. means located between the source of nessure and the engine for Irv-passing the fuel when the engine is st a rtcd, and a valve that automatically closes when sl'lbjected to the blast pressure and prevents air from being discharged through the bypass.

3. An internal combustion engine in combination with a fuel pump, a pulverizer into which the pump discharges, an air blast means that communicates with the pulverize'r and normally discharges fuel into the 7 engine, a valve controlling the admission of fuel and air to the engine, a by-pass valve located between the pump and the. pulvcrizer, and a valve located between the bypas-s and .the pulverizer which is normally held open by the fuel passing it and which closes when the air blas't tends to discharge through. it.

4'. An internal. combustion engine provided with 'a fuel pump. a pulverizer, a needle valve, a lever for actuating it, a 81m for mpving the lever, B, 'by-pass for the fuel pump, a means for moving the lever out of the path of'fhe damand also opening tile bypass valvefan air blast for discharging fuel from the pnlverizer into the engine, and an automatic valve that closes when the air blast tends to discharge through the bypass.

' 5. An internal combustion'engine in cornbination with a valve casing thrbugh which .ln witness whereof We have hereunto set fuel flows to the engine, a self-(closing hyour hands this 23ml day of May, 1912.

pass valve in said casing. moans forming! (Hun Dxy h H a part of the engine for opening it. and a l O f j FR I second valve also in said caeing and opened I I J by the'fuel as it flows toward the engine and Witnwses:

closed by the fuel as it tends to flow from Amzx. F. MM mum,

the engine through the by-paas. Jmxx '1 (inn

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