Патент USA US2408892код для вставки
get. 8, 1946. ) ‘T. P. SOPROUNOFF ' 2,403,890 INTERNAL- COMBUSTION ENGINE Filed July 8, 1945 2 Sheets-Sheet 1 I‘ 1-1 G. 2‘ In Q3 ~ ‘RG4 FIG-i FIGS @ 37 37 ' v N 17150061? B SokRou/voFr ‘- INVENTOR BY - ‘ v 7%: f-.mmw ATTORNEY i» 3» 1946. 2,408,890 1r. P. SOPROUNOFF ' INTERNAL-COMBUSTION ENGINE Filed July 8, 1943 2 Sheets-Sheet 2 P I G. 9 .56 58 ,5; 55 PIGM 1716.12 ZIHEODOREB SO-PROUNOFF INVENTOR BY ‘2,408,890 Patented Oct. 8, 1946 UNITED STATES PATENT OFFICE 2,408,890 INTERNAL-COMBUSTION ENGINE Theodor P. Soprounoif, New York, N. Y. Application July 8, 1943, Serial No. 493,814 7 Claims. 1 My invention relates to internal combustion engines and has particular reference to engines having Variable strokes. One object of my invention is to utilize the dif ference of pressure of compression, explosion and working pressure in the cylinders, providing the pistons with simultaneous additional relative . movement, which automatically varies the stroke (01. 123_55) 2 companying speci?cation and drawings in which: Fig. 1 is an elevational view partly in section of a four cylinder double opposed engine; Fig. 2 is a transverse sectional view of the same; Figs. 3 and 4 are detail views of an eccentric sleeve for the crankshaft; Fig, 5 is an elevational View partly in section in one cylinder in which compression takes place of a multicylinder engine with a single eccen by varying the stroke in a preceding cylinder in which the piston is driven by the force of ex trio; ' plosion. I accomplish this purpose by providing Fig. 6 is a transverse sectional view of the same; Figs. '7 and 8 are detail views of an eccentric; a free bushing on the crankshaft of the engine Fig. 9dis an elevational view partly in section with eccentrics so arranged that the bushing of a modi?ed multi-cylinder engine; takes a variable position in relation to the shaft Fig. 10 is a transverse sectional view of the depending on the relative strength of the forces same; acting on the eccentrics. The bushing provides Figs. 11 and 12 are detail views of the eccentric therefore a ?oating connection between the two for the engine shown in Figs. 9 and 10; pistons whereby the force of explosion in one cylinder is used for increasing compression in 20 Fig. 13 is a diagrammatic view of the eccentric in different positions on the shaft of the engine the next cylinder, the power output of the en shown in Figs. 9 and 10. gine varying in accordance with the change of My engine as shown in Figs. 1 and 2 consists the compression stroke. Thus it becomes pos of a casing l with bearings 2, 3 for a crankshaft sible to obtain relatively greater compression with weak mixtures when the engine is throttled down, 25 4 and cylinders 5, 6 at one side and 1, 8 at the other side. Pistons 9, II), II and I2 are ?tted in and the mean effective pressure of the engine is the cylinders with connecting rods I3, l4,v l5, increased by using the peak of the explosion l6 engaging eccentrics l1, l8, l9 and 20, the ec force for adjusting the rate of piston movement centric sleeve forming a single bushing rotatively and transferring the excess of explosion force at the moment of explosion to the subsequent 30 fitted on a crank pin 22 of the crankshaft 4. The centers of the eccentrics are successively stage of expansion. An added advantage is also displaced in relation to each other as shown so obtained by thus reducing the maximum pressure that when the piston I2 is in its highest exhaust of the bearings and moving parts, position, the piston 9 is in the ?ring position. Another object of my invention is to utilize the difference of pressure due to the additional rela 35 The opposite pistons l0 and Il are then both in the lowest positions, piston II at the end of tive movement of pistons for increasing the its working stroke, the piston 10 at the end of length of the piston stroke during the exhaust the intake stroke. so as to obtain complete expulsion of the ex The operation of my mechanism is as follows: haust gases from the cylinder by moving the Assuming that the crankshaft rotates in direc piston closely against the bottom of the cylin tion of an arrow 23, Fig. 2, combustible mixture der. The intake stroke is thereby also increased, has just been ignited in the cylinder 5, piston 9 resulting in a larger volume of the explosive mix moving downward and rotating the crankshaft. ture being drawn into the cylinder. This pur Piston II] will begin its compression stroke, the pose is obtained by providing the engine with a pair of cylinders, or several such pairs. The 45 eccentric I‘! being then subjected to the working pressure indicated by the arrow 24, and under pistons in every pair being connected to a com compression pressure in the cylinder 1 as indi— mon crank of the shaft by a ?oating bushing with two eccentrics so arranged that the bushing cated by an arrow 25, acting on the eccentric l8. as a two cylinder engine or any other type such as opposed, radial or V-type. pressure in the cylinder 5. This rotation of the eccentric sleeve on the crank pin causes simul These two forces are at an angle to each other is rotated by the force of explosion in one cyl and will tend to turn the eccentric sleeve on the 60 inder, placing the other eccentric in a position crank pin when the compression pressure in the in which it completes the exhaust stroke more cylinder 1 becomes greater than the working fully. The engine for this purpose can be built My invention is more fully described in the ac 65 taneous additional relative movement of all 2,408,890 3 pistons in the cylinders because of the rigid con nection between the eccentrics. As shown in Figs. 1 and 2, the piston l2, at the beginning of the working stroke in cylinder 5, is moved in a position in which it reaches the bottom of the 4 maximum value of the explosion pressure is de creased, a relatively greater pressure is obtained on a longer portion of the piston travel so that the mean effective pressure of the cylinder is in creased, thereby increasing its power output and cylinder 6, completely expelling the exhaust gases. e?iciency. The next explosion will be in the cylinder 1. A ten cylinder engine is shown in Figs. 9 to 13 Additional relative movement of the pistons in inclusive with two sets of cylinders, each set hav creases compression space in the cylinder 1. The ing ?ve cylinders, radially mounted on a com piston | | of cylinder 8 at the end of the compres 10 mon crankcase 6| at equal distances apart. sion cylinder 1 reaches the top of cylinder 8, Cylinders of one set are numbered 5|, 52, 53, 54, completely expelling the exhaust gases. The 55 and of the other set 56, 51, 58, 59, 60. A com action will be the same for the next explosion mon crankshaft 62 is journaled in the crankcase in the cylinders 6 and 8. It will vbe noted that and is provided with a single crank 63. An eccen rotation of the eccentric is produced and con 15 tric collar 64 is rotatively mounted on the crank trolled only by the working pressure in one and is pivotally connected at 65, 65 to connecting cylinder and by the compression pressure in an rods 66, 66, engaging eccentrics 61, 68 extending other cylinder, and no other additional mecha from pistons 69, 10, 1|, 72, 13 in one group and nism is used for such rotation. It may be seen W3, 15, T6, 11, 18 in the other group. This engine that the exhaust and the intake strokes are con 20 combines the features shown in Figs. 1 and 2 siderably greater than the compression and power with the features of the engine of Figs. 5 and 6. stroke with the result that more combustible mix Successive positions of the eccentrics are shown ture is introduced into the cylinders. The engine being supercharged to that extent, and the ex haust gases are more completely expelled, leav ing a clean combustion chamber for receiving a fresh charge of the mixture. My system is also applicable to radial engines. A seven cylinder engine is ShOWn in Figs. 5 an'df? with cylinders 27, 28, 29, 35, 3|, 32, 33 mounted one common ‘crankcase 34 with a crankshaft 35 having a single crank pin 36. An eccentric collar or ring 31 is rotatively mounted on the crank pin and is pivotally connected ‘at 38 to connecting rods 39 extendingfrom pistons 46, 4|, 42, '43, M, 45 and 46. The ?ring order is so arranged that the power strokes follow each . other in every other cylinder, ?rst in odd numbers, and ‘then in even numbered cylinders. . ' Thus when explosion takes place in the cylinder 27, the piston 40 will move downward in direction of an arrow 41, rotating the crankshaft and caus ing compression in the cylinder 29. The working pressure of cylinder 2'! will be opposed. by the diagrammatically in Fig. 13. Assuming that the piston of the cylinder 5| has just ?nished its compression stroke. The eccentric 61 will then take its lowest position with the eccentric 68 in the uppermost position. Following the explosion in the cylinder 5| , the crank will turn toward ' the axes of the cylinders 52 and 51. The cylin der 52 will be under compression and the cyl inder 5'! will have an exhaust stroke. The ec centric 51 will be under action of the Working pressure in the cylinder 5| and compression of the cylinder 52 so that its position at every mo 35 ment will be determined by the balance of these forces. As a result, the compression space of the cylinders or the piston displacement will be automatically varied. If an explosion now occurs in the combustion space of the cylinder 52, the piston under action of this explosion force will increase the displacement of the explosion cham. her and will correspondingly reduce the explo sion pressure. The eccentric ring will rotate around crank pin under action of the explosion compression pressure in the cylinder 29 as shown 45 force in direction ‘of an arrow 19 and will pro by the arrow 48 so that the eccentric ring will duce an added additional relative movement to rotate under action of ‘these forces in direction of the pistons of all the other cylinders. an arrow ??, the position of the eccentric ring at The eccentric 67, turning under the force of every moment being determined by the balance explosionin the cylinder 52, will cause an addi 50 of these forces. .As a result the compression space‘ tionalv relative movement of the piston of cyl of the cylinders or the piston displacements will inder 51 through an eccentric 68, forcing the pis be automatically varied. . ton of cylinder 57 to the top of the cylinder, com Thus when explosion takes place in the cylinder pletely expelling‘the exhaust gases. At the same 29, ,the force of explosion acting through the time the eccentric'?l under. the same conditions piston will turn the eccentric ring 31 in direction 55 will provide anadditional movement to the piston of an arrow 49 while turning the crankshaft, 69 of the cylinder 5|, partly transmitting the thereby increasing the displacement of the explo pressure of the explosion-in the cylinder 52 to sion chamber and reducing the peak of the pres the cylinder 5| wherethe working stroke takes sure. The rotation of the eccentric ring 3'! simul place. taneously causes additional relative movements 60 The explosions» in the cylinders may follow of all the other pistons. The piston 40 of the each other in a. diiferent order. The order‘ of cylinder 21 will also receive an additional move explosions changes direction of rotation of the ment from the eccentric ring 3'! due to the ex eccentric ring on the crank. plosion in the cylinder '29, part of the explosion The compression chamber in this engine is force in the cylinder 29 being thereby trans 65 automatically increased and the compression mitted into the cylinder 21 where working stroke pressure reduced in the cylinder in which there takes place. This engine thereby has an ad is an explosion at the start of the engine. vantage in that the volume of the compression The engine of Figs. 9 to 13 inclusive has all chamber automatically varies and the volume of the, advantages of the engine of Figs. 5‘and vSand, the explosion chamber also varies, being auto 70 besides, effects a complete exhaust of the burned matically increased at the moment of explosion, gases. reducing the maximum pressure, and transmit _It ‘is understood that my internal combustion ting a portion of this pressure into the next cylinder where working stroke takes .place. It should be noted, however, that while the engines may be further modi?edwithout depart ing from the spirit of the invention,pas set, forth in‘ the appended claims. ' > 2,408,890 5 l claim as my invention: - 1. An internal combustion engine comprising a plurality of cylinders mounted on a crankcase; a crankshaft rotatively mounted in the crankcase having a single crank pin; an eccentric sleeve rotatively mounted on the crank pin of the crank shaft; a collar rotatively mounted on the sleeve; 4. A multicylinder internal combustion engine having a crankcase with a crankshaft, cylinders radially extending from the crankcase, and pis tons in the cylinders with connecting rods; in combination, an eccentric rotatively supported on the crankpin of the crankshaft; a collar rotative ly mounted on the eccentric, rigidly connected to the inner end of one of the connecting rods; and pistons in the cylinders with connecting rods; and means for connecting the inner ends of the other operative connections between the inner ends of the connecting rods and the collar for causing ro 10 connecting rods with the collar, the ?ring order of the cylinders being arranged for causing ex tation of the eccentric sleeve on the crank pin plosions to take place alternately in the direction solely by the difference of pressure in one cyl of rotation of the crankshaft, causing the eccen inder between working pressure and compression tric to be rotated on the crankshaft solely by the pressure in another cylinder acting on the collar for imparting to all pistons of the cylinders a si 15 pressure on the collar, thereby alternately vary ing the compression space in the cylinders. multaneous additional relative movement there 5. A multicylinder internal combustion engine by varying the volume and pressure of compres having a crankcase with a crankshaft, cylinders sion chambers in the cylinders depending on the radially extending from the crankcase, and pis induction volume of mixture in the cylinders. tons in the cylinders with connecting rods; in 2. An internal combustion engine comprising a 20 plurality of cylinders mounted on a crankcase; a combination, an eccentric rotatively supported crankshaft rotatively mounted on the'crankcase, on the crankpin of the crankshaft; a collar ro crank pin solely by utilizing the difference be 30 on the crankshaft solely by the pressure on the ' tatively mounted on the eccentric rigidly con having a single crank pin; an eccentric sleeve ro nected to the inner end of one of the connecting tatively mounted on the crank pin of the crank rods; and means for connecting the inner ends shaft; a collar rotatively mounted on the sleeve; 25 of the other connecting rods with the collar, the pistons on the cylinders with connecting rods; ?ring order of the cylinders being arranged for and operative connections between the inner causing explosions to take place successively in ends of the connecting rods and the collar for alternate cylinders in the direction of rotation of causing rotation of the eccentric sleeve on the the crankshaft, causing the eccentric to rotate tween the explosion pressure in one cylinder and working pressure in the other cylinders acting on the collar, for providing all pistons of the cylinders with simultaneous additional relative collar, thereby increasing the compression space. 6. In a multicylinder internal combustion en gine having a crankcase with a crankshaft and cylinders with pistons and connecting rods ex-. movement which transmits a part of explosion 35 tending radially from the crankshaft; in combi pressure from one cylinder in which explosion nation, an eccentric rotatively mounted on the just occurred to the other cylinders in which crankpin of the crankshaft; a collar rotatively working stroke takes place, thereby increasing mounted on the eccentric; pivoted connections the power of the engine. between the collar and the inner ends of the con 3. A multicylinder internal combustion engine necting rods, the ?ring order of the cylinders be having a crankcase with a crankshaft, cylinders ing arranged for producing a succession of im radially extending from the crankcase, and pis pulses for rotatively displacing the eccentric on tons in the cylinders with connecting rods; in the crankshaft solely by the pressure on the col combination, an eccentric rotatively supported 45 lar, the impulses constituting component forces of on the crankpin of the crankshaft; a collar ro tatively mounted on the eccentric rigidly con nected to the inner end of one of the connecting rods; and means for connecting the inner ends of the explosions and compressions in alternate cyl inders. 7. An internal combustion engine comprising several cylinders and a crankshaft, the cylinders the other connecting rods with the collar, the 50 extending radially in different directions from ?ring order of the cylinders being so arranged as the crankshaft, the cylinder having pistons with connecting rods operatively connected to the to produce a component force of an explosion in crankshaft; and means operated solely by the bal one cylinder and compression in another cylin ance of forces of explosion and compression in der acting on successive peripheral portions of the collar for causing the eccentric to rotate, thereby 55 different cylinders for varying the displacement of. the cylinders. varying the compression space in the cylinders the variations in the strokes being effected sole ly by the component force. THEODOR P. SOPROUNOFF.