US1995625A - Double power combustion motor with reduced friction - Google Patents

Description

March 26, 1935. P. scHEscHKEwlcz 1,995,525

DOUBLE POWER COMBUSTION MOTOR WITH REDUCED FRICTIONQ Filed Fb. 2e, 1931 2 sheets-sheet 1 INVENTOR. PETE@ Scl/ESCHKEW/cz Wm ATTORNEYS March 26, 1935.

P. SCHESCHKEWICZ 4 DOUBLE POWER COMBUSTION MOTOR WITH REDUCED FRICTION Filed Feb. 26, 1931 2 Sheets-Sheet 2 ATTORNEYS STATES PATENT OFFICE DOUBLE POWER COMBUSTION MOTOR WITH REDUCED FRICTION Peter Schesohkewicz, Kanu-Ruda, Lithuania.

Application February 26, i931, Serial No. l8,453 in Lithuania February 27, i930 i claim. A'(oi. 12sssi This invention refers to a double power comand comprises intermediate members p. The bustion mot/or with reduced friction. lower ends of the pitmeh lc are provided with An object oi the invention is to reduce to a bearings n. minimum the friction losses ci the motor and, by The Cylinder CL and the valve Chamber are o establishing two compression spaces on both formed of one piece. 5

sides of the cylinder, to obtain a double acting The Walls of the explosion chamber d form one power impulse for each. piston, so that a. two piece with the crank shaft casing e. 'I'he walls of cylinder motor may be used as a substitute for athe uppei eXDIOSiOn Chamber are made Out 0f four cylinder one. a separate piece. The cylinder a, the upper and Another object is to reduce the space required 10Wer eXplOSiOn Chambers f and d, and the crank l0 for the motor and to diminish its weight, both casing e are connected with one another by bolts requirements being very important for the opg. Since the piston operates on both sides, it is plication of the motor to automobiles, ying maprovided 0n beth ends With piston rings i. chinos, etc. Both pistons h have one common Wrist-pin y', it The motors used hitherto have the disadvanwhich passes through the Openings b and which tage that a twofold power can never be obtained Carries Cross-heads S guided by members T- with an equal diameter and, furthermore, that The crank shaft l is carried by four bearings m. the side pressure of the pistons on the cylinder Said crank shaft carries three pitman bearings n. walls, called forth by the tangential pressure of The stud roller t lies in ball bearings u which the Crank machinery driving gear, cannot be elimare fastened by screws v to the cylinder body. as 20 inated, and that it is not possible to provide a Shown in Figs. 3 and 4. Tw'o valves are actuated combustion chamber at the lower end of the cylby @ach Studinder, because the connecting rod is placed in An advantage Obtained by this machme Conthe middle of the cylinder, sists in the elimination of a one-sided friction Another object of the present invention is to between the piston and a Cylinder Well dllllng eliminate all these drawbacks, explosion; the remaining friction is only due to The invention will be more fully understood the slight pressure of the piston rings. The work from the following detailed description when 0f the machine iS balanced t0 a Considerable eX- token 1n connection with the annexed drawings tent. because while explosion takes place on one showing a preferred embodiment of the inven- Side 0f the Pisten, the Compression 0f the gases 30 tive idea. takes place on the other side. During the ex- In the drawings; plosion on the other side of the piston, an exhaust Figure 1 is a longitudinal section through the 0f the gases takes place on the first-mentioned motor. side. The actuating forces and the energy of Figure 2 is a cross section through one of the the movable masses are balanced by this ar- 35 cylinders. rangement.

Figure 3 is a cross section through a cylinder A two-cylinder motor made in accordance with and a cross-head. this invention requires only three connecting Figureeisavertical section through this crossrods and three crank shaft bearings, while a 40 head. l corresponding four cylinder motor of the type 40 Figure 5 is a. longitudinal section through a used in prior art needs four connecting rods and motor of a somewhat different construction. ve crank shaft bearings. The number of bear- Figure 6 is a cross-section through the motor ings is thus reduced by 23%. The friction surshown in Figure 5. face of the rod bearings is diminished by 62%.

Figure 7 is a diagram showing the position oi Since the coefcient of friction of ball bearings i5 some parts illustrated in Figs. 5 and 6. forming a part of lthe cross-head s is 0.002, while The modification shown in Figures' l. to fl comthe usual coefficient of friction of the piston is prises a cylinder d. Wrist-pins i which carry the 0.02, the friction in the cylinders is reduced by pistons 'h pass through openings or slots b. The 90% by employing such bearings.

5o chine is provided with an upper explosion The modification shown in Figs. 5 and 6 com- 50 chamber f and a lower explosion chamber d, as prises two pistons h' interconnected by a. Wristwell as with valves c operated by valve stems lw. pin y" passing through the upper ends of two The pistons h connected by wrist-pins 7 drive the pitmen Ic. A member 7 is rotatably mounted pitmen is connec with crank portions o of the on the. wrist-pin i' close to said end of each of 00 oranti shaft l which is supported in bearings m, the pitmen, and carries two pivots 8 and 9 05 which pass through the ends of two levers 10 and 11, the opposite ends of which are rotatably mounted at 12 and 13 in the casing a. The lower end of the rods k' are connected with crank portions o' in a way similar to that shown in Figs. 1-4.

The position of the member 7 at the upper dead center is shown in full lines in Fig. 6, while its position at the lower dead center is shown by dotted lines. In the diagram illustrated in Fig. 7 the upper position is shown by the dotted line A B, while the lower position is shown by the broken line C D. An intermediate position is designated by the full line B C, and equal angles formed by the levers 10 and 1l and a horizontal line are designatedby the letter 4:. It will be noticed that in the upper position the pivot 8 lies in the same horizontal plane as the pivot 12, while in the lower position, the pivot 8 lies in the same horizontal plane as the pivot 11.

I claim:

In an internal combustion engine, in combination, a casing, a piston, a cylinder connected with said casing and adapted to surround a. part of said piston, a wrist-pin carrying said piston and extending beyond said cylinder, a pitman situated outside of said cylinder and connected with said wrist-pin, a crank shaft extending parallel to said wrist-pin and connected lwith said pitman, an immovable bearing rigidly connected with-said casing and situated outside of the cylinder walls, an oscillatable member connected with said wrist-pin adjacent to said pitman and situated outside of said cylinder, and an oscillatable lever having one end carried by said bearing, the opposite end of said lever being connected with said member, said member and said lever transmitting forces developed by the crank shaft and the pitman to said casing and thereby relieving the pressure upon said piston.

PETER SCHESCHKEWICZ.

Images