US1001782A - Internal-combustion engine. - Google Patents

Description

O. C. STEGLAT.

INTERNAL GOMBUSTION'BNGINE.

APPLIUATION FILED SE1 TL1 7,1910A 1,001,782. Patented A1'1g-29, 1911.

Strom/w96 -0TTO C. STEGLAT, F DETROIT; ItiCEIGN I'Nrnnnnncoivinusrron ENGINE.

Leonesa Specification of `Letters Iatent. Paigerrg Aug, 29, 15ml,

Application filed September 1'7, 1910. Serial` lNo. 582,59?.

To @ZZ whomfit moy-concern.'

Be it known that I, Orro C. STEGLAT, a

citizen of the United States, residing at Detroit,. in ,the county ofWayne, State of Michigan,v havej invented `certain 'new and.

Auseful lniproveme'nts in Internal#Com'busn tion Engines; and I doher'ebydeclare the g following to be a full, clear; and exact description ofthe invention)- suchraswill enable ,others skilled .in the art to' which it appertains to make and use the same.

f This". invention .relates lto 'internal 'com- "bust-ion engines and has `special. ieference .to an engine of the two cycle type.

The `principal object of theinvention is to provide yan improved and simplied gein eral construction for an engineof this class. iAsecond objectof` the invention is to pro vide an .engine of this class having an improved construction ofcompression and eX- plosion cylindersg'the venginebeing so con structed that thev compression of the explo- .sive mixture takesplace in two stages.

y A third objectof my invention is to' provide a construction of two cycle engine wherein back firing will be eliminated y AfourthY object ofvmy invention is to provide an engine of. this description which will -ive an vincreased power over other engines of the same cylinder dimensions.

. Withv the above and other objects in view the invention consists in general of appair offalined cylinders combined'with cert-ain -novel valve and piston arrangements.

The invention further consists ingenera'l of certain novel details of construction and hina-tions of parts hereinafter fully del scribed, villustrated in tlej accompanying` drawings,'and specically set forth in the claims. ,j

'In' the drawingthe ligure represents' a vertical section through an engine constructed in accordance with this invent-ion.

In the present embodiment of the invention there is employed an explosion cylinder 10, which is -shown as vertically arranged and beneath whichis a. compression cylinder 11.v These 'cylinders are supported on a suitable base 12 carried on which are bearnigsrl for a crank shaft 14.

Between the cylinders 10 and 11 is a diaphragm 15 which is so arranged as to constitute a head common to both cylinders,k the diaphragm being; the bottom head of the explosion cylinder and top head of the com- ,pression cylinder.

The two cylinders are secured to the diaphragm by means of suitable bolts in the 'ordinary manner and the cylinder il is ol greater diameter than the cylinder lO. The diaphragm 15 is-provided with a plurality of openings 16 above which are valve casings i7 provided with suitable seats and these openings are controlled by valves 19 which are so arranged as to open upwardly in the direction of the explosion cylinder.

in the cylinder l0 is a piston 20 and in the cylinder 1l is a similar piston 2l. The

piston :ZOIis provided with the usual baille plate* 21 as 1s common in two cycle gas eneines. A Apiston rod 22Y passes through a stufng'loonV 23 in the diaphragm 15 and serves to connect the twopistons sovtliat they are held to move inimison. i connecting` rod 24 is used to connect the lower piston 2l with the crank shaft le. Explosion takes place in the upper end of the cylinder l() and for the purpose of ignitingr the mixture the usual spark plug' 25 is provided the connectionsV of which are not shownas formingl vno specic part of this invention.

At 26 is a-carbureter which comznunicates by the inlet pipe 27 with thc cvlinder ll immediately beneath the diaphragm This carbureter is provided with the us check valve arrangement common to devices and which. is arranged to pre ent movement of air through the `earlnueter .in one direction while permitting its fren movement in the opposite direction. immodiately above the diaphragm i5 the cylinder lOvis provided with a port 28 which is controlled by a check valve 29 which opens away from the cylinder. .This check valve and port afford communication with a bypass 30 the other end of which communicates' with the cylinder I() intermediateQits ends, the communicating port being;z shown at 3l. Directly opposite the port 3l there is provided an exhaust pipe 32 also eonununicatingl with the cylinder 10. The einen: ings from the exhaust pipe and the bypass are so arranged that they r re only uncovered when' the piston Q0 reaches the lowerinost point of its strolte.

in the operation of this device the downward-movement of the piston 2l drains air through the carbureter thus earbu'rizingr the samef This action continues until the ton 2l has reached the lowermost point its stroke. As the piston 21 moves zip-wf" l the carburized air in the cylinder ll forced out of said cylinder through the openings 1G in the diaphragm, the valves 'i9 rising' to permit the passage of the carhu.

. most point of its stroke the compressed mixture will. be forced through the b v-pass into the cylinder-'10 above the piston 20 and will force out before it the spent gases remaining in the cylinder 10 from the last explosion. Meanwhile a fresh charge of carburized air .has been drawn into the cylinderll. As

the pistons again rise the lower piston acts as previously described and the piston 20 completes the compression of the carburized air in the upper end of the cylinder l() until the spark passes through the igniter 25. The explosion then takes place and forces the pistons downward, the ent-ire- Voperation being repeated with each complete revolution of the crank shaft and consequent complete reciprocation of the piston.

There has thus been provided a simple and efiicient device of the kind described and for the purpose specified.

' Having thus described the invention what 'is claimed as new is 1. In an internal combustion engine, an explosion cylinder, a compression cylinder in axial alinement with said explosion cylinder, a diaphragm between said cylinders and forming a head common to both cylinders, said diaphragm being provided with an opening therein, a check valve controlling said opening and arranged to open toward the explosion cylinder, pistons reciprocable in unison in said cylinders, an inlet pipe communicating with the compression cylinder adjacent said diaphragm, a 1oy-pass leading from the end ,of the explosion cylinder adjacent said diaphragm to a point between the ends of the explosion cylinder, and a check valve in said ley-pass opening away from the end adjacent the diaphragm.

2. In an internal combustion engine, an explosion cylinder, a compression cylinder in axial alinement with said explosion cylinder and of greater diameter than said explosion cylinder', a diaphragm between said cylinders and forming a head common to bot-h cylinders, said diaphragm being provided with an opening therein` a check valve controlling said opening and arranged to open to-l ward lthe explosion cylinder, a piston in said explosion cylinder, a, second. piston in thc compression cylinder, a' piston'rod con-- necting said pistons, an i'nlet `pipe communicating with the compression cylinder adjacentsaid diaphragm, a byrpass leading from Jthe end of the explosion cylinder adjacent lsaid diaphragm to a point intermediate the ends of the explosion cylinder, a check Valve in said by-pass opening away from the end adjacent thediaphragrn, and an exhaust pipe communicating with said explosion cylinder at a pointfopposite the end of the by-pass remote from said diaphragm'tf-,the piston in the explosion cylinder controlling the oiposite'ly disposed by-pass and exhaust .pipe penings.

In testimony whereof, Ivaffix my signature, in presence of two witnesses.

OTTO C. STEGL -T. Witnesses:

ROBERT RIDLEY, ALEX. HAYES.

Copies of this patent may lbe otitanediffor ve cents each, by addressing the Commissioner of Patents.

Washington, 1). G.

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