US862448A

US862448A - Explosive-engine.

Info

Publication number: US862448A
Application number: US31278206A
Authority: US
Inventors: Gustave Cornilleau
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-04-20
Filing date: 1906-04-20
Publication date: 1907-08-06
Anticipated expiration: 1924-08-06

Description

PATENTBD AUG. 6, 1907.

G. GORNILLBAU. BXPLOSIVB ENGINE.

APPLIOATION FILED APB. 20,1906.

71115511414'iff/45.44%,

PATENTED AUG. 6, 1907.

Gr. GORNILLEAU. lEXPLOSIVE ENGINE.

APPLIUATION FILED AP R.20,1906.

2 SHEETS-SHEET 2.

GUSTAVE CRNILLEAU, or PARIS, FRANCE.

EXPLosrvE-ENGINE.

v Specification of Letters Patent.

Patented Aug. 6, 1907.

Application sied April 20,1906. serial No. 312,782.

i To all lwhom'i't may concern:

, Be it `known that I, GUsTAvE CORNILLEAU, a citizen of the French Republic, residing at Paris, France, 'have invented certain new and useful Improvements in or Relating to Explosion-Engines, of which the following is a specification.

This invention relates to apparatus to enable the power of" explosion vengines to be varied by regulating the volume ofthe mixture admitted, and, by means of a single controlling part, to relieve compression so as to facilitate the starting of the engine.

According to this invention the variation of the power'of the engine is effected by means of a device provided with expansible cams arranged on the spindle operating the inlet valves, in such manner that the duration of the admission period varies in proportion to the work to be effected. This mechanism is, moreover, arranged in such manner as to act on the exhaust valves, in'order to open them for the purpose of vary' ing the degree of compression at the moment of starting the engine. l

In the accompanying drawing z-Figure I is a vertical section through the operating spindle common to both.

the devices for regulating the inlet, and the exhaust or compression reliefi Fig. 2 is a horizontal section on the line A-A of Fig. l, showing the same spindle and the operating spindles for the inlet and exhaust valves. Fig. 3 is a partial section on the line B-B of Fig. l, chiefly showing the operating device for regulating the exhaust valves. Fig. 4 shows in elevation one of the cams of the exhaust valves. Fig. 5 is a vertical section I ."through one of the inlet valves and its operating cam.

Figs.r 6 and are sections showing the same cam in two positions e i5 For afour-cylinder engine, the -shaftais provided with four projections tvprovided with openings in eachl of which can transversely move the corresponding cam c which is caused to rotate together with the said shaft. In the valve gear taken by way of example, v the cams c are arranged atv-an angle of 90"v relatively to each other.

In the interior of the hollow shaft a, isarranged a spindle d having eccentric rods or portionsv e which pass through aslotted'openig f made in each cam 'c.y Thisv 5v5 spindle d is provided, outside the hollow shaft. a and corresponding each to a given and different 35 degree of opening of the inlet valve.l Figs. I8 to-l7 are at the end opposite theroothed'wheei b, with a bevelv pinion g engaging with 'a bevel wheel h, the spindle i of which Vcan be operated by means of a crank or head m or any other suitable part, so as to bring the eccentric rods e into the desired set positions; It follows from this arrangement that, owing to the continuous rotation of the hollow shaft a, thecams c controlled by the eccentric rods e, will slide or reciprocate in their bearings t, and their projecting parts .project beyond the said bearings to an extent corresponding to the position occupied by the said eccentric rods e in the hollow shaft a.

' As shown respectively inFigs. 5, lBand 7, itv will be seen that for -similar position of the-,cams c, valve lifts or travelsof different heights, correspond to the difierent positions of the rods e, the volume of gas admitted for producing the required work in the engine,- thus being regulated. In this device, the lifting of the suction or ladmission lvalve j always takes place prac tically at the same point ofthe piston stroke, the closing alone of the said valve-being advanced. The different motions of the admission valve owing to the varyingaction of the cam c under different positions of the eccentricrod e are shown in Figs. 8 to 17.

Figs. 8, 9 and 10 show the various relative positions of the cam c and roller o when the eccentric e is positioned with its greatestradius on the'line M.z In Fig.

8, the cam, turning in the direction of the arrow, comes in'contact with the loller of the valve-rod: In Fig. 9 the valve is fully open, iriFig. 10 it is closed.- The curve, corresponding to this movement of the valve is shown at m Fig. 17. The angles e' and b described by the cam on each side of the roller from thev commencement of the opening to complete closure of the valve are practically equal. This is not the case in the positions shown in Figs. l1, l2, and 13, and in Figs. 14; 15, and

16, in which the eccentric is respectively positioned on -the lines M2 and M3, to which positions respectively v correspond the curves im? and m3 of Fig. 17.' l y Comparing on the one hand, Figs. 8, 11 and 14, and

. on the other hand Figs. 10, Y13 and 16, it is seen that the angle a diminishes to avery slight degree, becoming a in 1l and a2 in 14, while on the contrary the proportional diminution is greatly accented in Figs. 10, 13 and llfor the angle b which becomes b in 13 and b? in 16. The quantity of explosivemixture admitted, cannot, therefore, exceed the volume determined by thel piston up to the moment'of the closing of the valve. ,The work produced by the .explosion corresponds therefore strictly to the said volume.v

The inner spindle'd is provided, in tliel portions'of the shaft a which form bearings for it, with flat portions which produce at lthat point a cross'section correspending to the openings f of the cams.. Owing to this i arrangement it is suieient for fitting or removal of the should not offer any resistance. The device hereinafter' spindle d, to cause the said spindle to slideand to rodescribed (the operating partof which is combined with that of the adjustable cams) enables the exhaust cams lto be controlled in such manner as to keep the corresponding valves opened during a certain portion of the compression period, thus preventing any resistance due to Compression. This arrangement consists in mounting the spindle k carrying the exhaust cams Al, in such manner that it shall be able to slide longitudi- `nally to a certain extent in its bearings.- A strong spring r Aarranged in a tubular recess at 1pne of its ends,t keeps it in a given position, so that the cams I shall' normally remain in contact with the roller o for lifting ythe exhaust valves- (Fig. 3). In this position,` the cams l bear with one of their faces against the correi spending projections of -thebearings for the spindlek.

At its end, opposite the spring r, thespindle k is prox ,Y vided with another recess for receiving a spherical head n bearing againstv a piece of hardi'steel arranged at the bottom of the said recess. This head n is provided with a fork or yoke p embracing the driving spindlel the upper branch of the said fork being provided with a slot for receiving a Afinger or lug s o n the said driving spindle i. The slot inthe fork p is cut in such manner brought into vertical position. -V i The proportion between the toothed wheels h and that the finger 8 strikes the bottom of the slot when' g is such that the regulating spindled of the suction valves rotates to the extent of one half revolution for each quarter revolution of the driving spindle, so that during the various rotary motions which are impartedtothe spindle d for regulating the inlet valves, the linger s can freely move backwards in the recess of the fork p without exercising any action on the spindle k.

The exhaust camsl are provided at the end opposite to that of their ordinary boss, witha flange or beading q (Fig. 4) arranged near one of the edges of their `cylindrical portion and outside the ordinary path of the roller o which effects the' lifting of the exhaust valve. This flange or beading. ends in inclined faces, which makel its contact with the said roller o more gradual. In

accordance with this arrangement, when it is desired to start the engine, the driving spindle i is turnedv sn as to bring theinger s inthe direction of its application l against the'bottom of the fork p. In this movement the finger s moves the spindle lc longitudinally, which movement'is sufficient to bring the headings or flanges yq yinto the path -of the roller o of each cam l. In these conditions, when, immediately after having thus operated the driving spindle t', the spindle of the engine is perated forstarting, the cam l ofthe cylinder in which 'compression would otherwise take place, will meet with its flange q the roller o which will raise the co'rre` spending exhaust valve to a sufiicient extent to diminish lthe pressure existing in the cylinder, by the discharge of the air or gas which was stored therein before the startingof rthe corresponding piston. Moreover, the

compression of the mixturel which is admitted in the first place, being prevented from being as strong as iny .normal working, the result will` be that this compresinto gear.' As soon as the engine has been started, the

lspindle i is operated so as to bring 'back the cams Z to their normal working position and allow, moreover, theadjustable admission-cams c yto be arranged in'a position corresponding to the work to be done. The whole of this arrangement enables therefore notronly the starting of the engine to be facilitated, -but also itsl workingto beregulated as desired, by controlling thequantity of mixture admitted by means of-,the same operating parts. i

What I claim as myinve'ntion, and desire to secure by Letters Patent iszd- 1. Regulating mechanism for'explosionengines compris, ling a rotary spindle, an adjustable inlet-valve-operating cam mounted thereon, an exhaust `valve-operating shaft, a cam thereon incombination with a. controlling'shaftfor said inlet and exhaus operating devices, a connection lntermediate the controlling shaft and the inlet operating cam spindle for adjusting the throw of4 the cam mounted thereon and a connection for longitudinally moving the exhaust operating cam shaft substantially as set forth.

v2. Regulating mechanism for explosion/engines comprising a hollow rotary shaft, a cam operating spindlewithin said hollow shaft, an adjustable lnlet-valveoperating cam mounted thereon, an exhaust valve-operating shaft, a cam thereon in combination with a controlling shaftfor said inlet and' exhaust operating devices, a connection ,intermediate `the -controlllng shaft and the'inlet operating cnm spindle for adjusting the throw of the cum mounted thereon and a connection for longitudinally moving the exhaust operating cam shaftsubstantially as set forth.

3` yRegulating mechanism for explosion engines comprising a hollow rotary shaft, a cam operating spindle within said hollowshaft, having an eccentric portion, a slotted cam'mounted on said eccentric `portion and projecting through the tubular shaft, an exhaust valve-operating shaft, a-cam thereon in combination with a controlling shaft for said inlet and exhaust operating devices, a connection intermediate the controlling shaft and the inlet operating cam spindle for adjusting the throw ofthe cam mounted thereon und a connection for longitudinally mov- I ing the exhaust operating cam .4 shaft substantially as set forth.- A

4. Regulating mechanism for explosion engines comprising airotary spindle, an adjustable inlet'valve-operating cam mounted thereon,'an exhaust valve-opcrating shaft, a cam thereon in combination with a controlling shaft for said inlet and exhaust operating devices, a connection in` termediate the controlling' shaft andthe inlet operating cam yspindle for adjusting the throw of the cam mounted thereon, a slotted forked connection between the operating shaft and the longitudinally movable exhaust valveoperating shaft and a projection on the operating shaft engaging the slot in the fork,suhstantially as set forth.

5.. Regulating mechanism for explosion engines comprising a hollow rotary shaft, a cam operating spindle within said hollow shaft, an adjustable inlet-vaive-operatingr ca m mounted thereon, an exhaust valve-operating shaft, a cam thereon in combination with a controliingshaft for said inlet and exhaust operating devices, a connection intermediate the controlling shaft and the inlet operatingcam4 spindle for adjusting the throw of the cam mounted thereon, a slotted forkedconnection betweenptlie operating shaft and the longitudinally movable exhaust vulve operating shaft and a projection on the operating shaft engaging` the slot in thc fork, substantially. as set forth.

6. Regulating mechanism for explosion engines comprising ahollow rotary shaft a cuiuopcrnting. spindle within said hollow shaft, having un eccentric portion, 'a slotted ist cam mounted on said eccentric portion and projecting through the tubular shaft, an exhaust valve-operating shaft, a cam thereon in combination with a controlling shaft for said -inlet and exhaust operating devices, a connection intermediate the controlling shaft and the inlet operating cam spindle for adjusting the throw of the cam mounted thereon, a Yslotted forked connection between the operating shaft and the longitudinallyv movable 'exhaust valve operating shaft and a 'projection on the operating shaft engaging the slot in the fork, substantially as set forth. y

7. In regulating mechanism for explosion engines of the kind described an inlet valve cam adjusting device consist'- ng of a rotatory tubular shaft, a transverse cam opening therein, a rotatable cam operating spindle in said hollow shaft. a portion of said spindle fitting the interior of said shaft and a portion being eccentric thereto, a slotted cam mounted upon the eccentric portion of the spindle and projecting through the transverse opening in the tubular shaft in combination with means forturning the spindle independently of the rotary shaft substantially as set fOlh. o

8. In regulating mechanism for explosion engines of the kind described a controlling shaft, a bevel gear thereon for operating the inlet-valve cam spindle and a projection thereon for operating-the longitudinally movable exhaust valve cam shaft substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUSTAVE CORNILLEAU.

Witnesses` HANsoN C. COXE, GEORGES BONNEUIL.