internal combustion rotary orbital engine

Technical field

The present invention relates to internal combustion engine and in particular a rotary internal combustion engine and rotary combustion engine cycles.

Background Art

The rotary combustion engine and cycle superior in many ways to conventional reciprocating piston-type engine. They possess fewer parts, are of low weight, simple in design, power produces by direct pressure on rotor without need to connecting road, so there is no high pressure component, and so cross section is little, and do not expose to reciprocating imbalance.

Various designs of rotary combustion engines are known, most of which comprise a rotor eccentrically mounted within a rotor chamber. In many, the rotor has polarity of slots fitted with sliding vanes in order to create the working chambers of the engine as the rotor rotates within the rotor chamber.

However, there are numerous shortcoming associated with the known art such as inadequate sealing between the working chambers of the engine leading to combustion gas leakage between working chambers of the engine, inordinate friction wear of component parts, and an inefficient conversion of chemical energy to mechanical energy.

Many designs of rotary engines are very expensive to manufacture, and need for special machines to produce these designs; Furthermore these engines need special shops with special machines to make maintenances and it well be very expensive for user or customer.

The present invention seeks to overcome the disadvantages of known internal combustion rotary engines.

Disclosure of invention

Fig. 1 is a schematic drawing shows the main idea of the rotary orbital engine comprising an engine Outer casing (1) within it is mounted rotor (3) in its center there is a slid bearing in which rotates a crank shaft (6) and in both sides of the engine is covered by a flat circular plat, the cylindrical rotor has four radial slots in which are fitted with sliding vanes (43) the rotor has an orbital motion without rotation around its

center (6), and without friction to the insider part of the outer casing (1), while the vanes take an oscillation motion on flat base at the insider part of the outer casing , that creates four combustion chambers between rotor and the outer casing , the drawing describes what is happening in combustion chamber attaching to part ( α) , it passes through discharge phase , compression phase , ignition phase , and exhaust phase, and that also happens in chambers attaching to parts (β ) & (φ ) & (γ ) .

Brief description of the drawings :

Fig. 1 is a schematic drawing shows idea of the rotary orbital engine. Fig. 2 is a cross - sectional axial view of an embodiment of the present invention passes through 45 degrees from vanes.

Fig. 3 is a cross - sectional axial view of an embodiment of the present invention passes through vanes.

Fig. 4 shows outer cylinder head of the present invention toward out side and cross — sectional details.

Fig. 5 shows the outer cylinder head of the present invention toward inside of the charge and the exhaust valves.

Fig. 6 shows the outer cover of the orbital engine that carries the exhaust pipes. Fig. 7 shows the inter cylinder head of the orbital engine and the positions of the internal crankshafts and its assembled with the sliding bearing in the inter cylinder head and the oil of lubrication in and out ways.

Fig. 8 shows the inter part (discharge scraper guide) between the engine outer cylinder head and the engine outer cover.

Fig. 9 shows the combustion dealing and the oil scrapers group on the rotor and the vanes.

Fig. 10 shows assemble of the valve axis and the cam wheel guide assembled on valve axis and the wing hinged joint and so the push valve fin.

Fig.11 shows out side figure for the charging blower and shows the groups of closing and opening valve cams and the Teflon sealing between charge and exhaust group.

Fig. 12 shows the position of the two rotors in one engine through an angle of the crankshaft rotation.

Fig. 13 shows the engine opened toward out side and the other is opening toward the middle

Fig. 14 shows cross section radial through orbital engine in the meddle of the rotor and passes the spark.

Fig. 15 shows cross section axial through a rotary orbital engine contain one rotor only.

Fig. 16 (A & B) shows charge and exhaust blower details and the Teflon scraper sealing, and group of sections assembled and disassembled.

Fig. 17 shows the position of charge and exhaust valve through the end of charge phase and the beginning of exhaust phase.

Fig. 18 schematic drawing shows the valve axis movement and its pressure springs with opening and closing cams.

Best mode for carrying out the invention

The rotary orbital engine is considered to be the natural development of the reciprocating engine.

The rotary orbital engine in fig. -2- consists of two units of opposite rotors (3) inside two cylindrical engine cases (1) , the two rotors take an orbital movement without rotation at 180 degree between them for dynamic stability and without friction with the insider part of the outer cylindrical engine cases

The rotors take the orbital movement around four internal crank shafts (7) rotate at four sliding bearings created between the inter cylinder head (2)and a cuboids (61) assembled co-axial with it by assembled bolts (63) as shown in fig. -7- , distance between the axis of the four slide bearings is more than the distance of the middle crank shaft plus the eccentric distance of the crank shaft for easy assembling , also the inner diameter of the outer casing is bigger slightly than the rotor diameter plus double distance of crank shaft eccentric to prevent friction between rotor (3) and the inner surface of the outer engine casing (1) .

In fig. -2-the outer crank shaft (6) has two slide bearings the inside one is coaxial with the outer side of the rotor and the outer is co-axial with the outer cylinder head (4) to present the main rotation shaft , and the outer crank shaft (6) has the same eccentric distance of the internal crank shafts (7) .

In the fig. -9B- shows the rotor four radial slots has a curved ends fitted with four sliding vanes (43) in fig. -9A- has the same cross section of the slots ,it take also an oscillation movement through the orbital movement of the rotor , the distance between every two opposite vanes is fixed by a group of fixing rails (20) that the

distance between the ends the two opposite vanes equal the inner diameter of the outer casing (1) , and the end of the vanes oscillate at a flat base (45) in the inner surface of the outer casing (1) shown in fig. -3- to create the working chambers of the engine as the rotor rotate , the vanes has a groups of a combustion sealing (24) to prevent discharge leakage between chambers and a group of oil scraper (25) .

The charge and exhaust group consist of four valves in the outer cylinder head (4) in figs. -2- & -5- show the outer cylinder head toward inside contain the four valves (9) every valve opens and closes by slide motion through two guide rails (53) fixed on the inner surface of the outer cylinder head (4) and there is a groove (54) in the inner surface of the valve adapted with the valve push fin (18) .

In figs. -2- &-10- show assembly of the push fin with the valve stem (10) by assembly bolts (56) and this fin move inside the charge and exhaust groove (59) created inside the outer cylinder head , this groove takes the push fin profile plus its stroke as shown in figs. -4-&-5- in which show the outer cylinder head (4) toward out side , at the sides of this fin there is a thermal seal (57) to prevent leakage between the charge and exhaust gases .

In fig. -4- the push fin (18) is a gate has a chamfer sides for escaping of lubrication oil and exhaust gases through the valve opening to the rail (55) in the inter part (8) shown in figs. -4-&-8- that exists between the outer cylinder head (4) and the outer engine cover (5)which carry the exhaust pipes (17) .

Fig.-10- shows the valve stem (10) it has a square cross section assembled with it the push valve fin (18) , the valve stem has a circular cross section in upper part on which assembled the base (13) of the pressure spring (11) , and the valve stem takes from its bottom also a circular cross section assembled with it a hinge wing (22) which has the axis of the cam pulley(19) ,the pulley has a groove to be guide on the open and close came (35) , fig. -10A- shows the movement of the pulley (10) and the hinge wing (22) on the open and close cam (35) .

Opening and closing cam exist on the discharge blower sleeve as shown in figs. -16A-&-11- this blower sleeve is assembled with the drive shaft (6) with a key so it takes the same speed revolution of the rotor

Fig. -18- shows the position of the valve stem (lθ)with rotation with opening and closing valve cam (35)so the pressure spring (11) and the spring house(26) , So figs. -2-,-4-,-5- and -8- show assembling of the pressure spring house (26) and the

valve stem group in the outer cylinder head (4) and the inter part (38) and so the consumption gas and oil rail (55) .

The other part of discharge and exhaust group is the discharge blower in fig. - 16A- shows the blower sleeve comprise multiple splines joint (32) fixed with the blower base (30) which consider also the engine fly wheel by bolts (53) to rotate the blower with the rotor revolution , the blower base (30) has sides (39) in exhaust part to separate between discharge and exhaust parts assembled with it two pieces of Teflon sealing (57) , the internal side of Teflon is fixed with the blower base (30) to separate the discharge and the exhaust parts and the outer side of Teflon separates between them in scraper guide in the inter part (8) .

The other part of the blower is blower face (31) in fig. -16A- where is the blower fins (14) , the discharge port (52) and the blower face has outer side (101) contain the exhaust ports (42) in exhaust field to leak the exhaust gases and totally closed in the discharge field (40) ,

In figs. -H-,-18- and -18- shows opening and closing cam (35) on blower sleeve (29) that they both take approximately one turn of rotor revolution and when the valve open this turn divides into two parts by the Teflon sealing (57) every one take a stroke approximately 180 degrees first for exhaust and the second for the discharge , fig. -17- shows the positions of the Teflon sealing (57) with the discharge and exhaust gate (59) in the beginning of exhaust stroke Pos.2 and the end of discharge stroke Pos.l

Fig.-6= shows the design of the outer cover (5) contains the exhaust pipes (17) and so the discharge entering port (28) .

So the orbital rotary engine is an internal combustion engine ,where is provided a fuel\air mixture supply using either carburetor or fuel injection means for providing a suitable fuel\air mixture to the intake and combustion chambers .the fuel\air mixture is ignited using a spark plug or compression ignition means . fig. -12- is a schematic drawing shows the position of the two rotors in one orbital engine through one angle of the rotary motion and shows that the active cycle is done through two revolutions of the rotor in many arrangements like : a 1 - β 1- φ 1- γ 1- α 2- β 2- φ 2- 7 2 or a 1- β 2- φ 1- γ 2- a 1- β 2- φ 1- γ 2

and the engine can be adjusted for this arrangement by adjusting the initial positions of the cam wheels (19) on the opening and closing valves cam (35) as shown in fig. —18- with adjusting of spark plug or injection pump timing for these positions.

For cooling the engine there is a water closed cycle in water gasket (48) in figs. -2-,-3-,.... Show the water gasket in outer casing (1), outer head (4) and inter head(2) ,in fig. -14- shows the water gasket (48) in outer casing (1) and also the assembling bolts of the engine (34) and the spark plug (75), the cooling can be also with air by a group of outer fins on the outer casing (1) , outer heads (4) and inter head (2) .

The lubrication of the orbital engine is a close cycle to lubricate slide bearings and moving parts like vanes , fins , rotor , figs. -2-,-3-,-7-,10 and -14- show inlet and outlet ways of this oil and oil pipes .

In fig. -13- shows the assembling seals (64) & (65) of the orbital engine on the sides of the outer casing (1) .

The rotary orbital engine can be one rotor design in fig. -5- where inter head (2) in this case is the back head and the internal crank shaft (7) has one side eccentric and the other side has two gears (67) rotate other gear equal to its size and the number of teeth co-axial with the back head and has the same rotation speed of the rotor adapted with a shaft (66) rotate at two sliding bearing one in the center of the back head and the other in the center of the back cover of the engine (69) ,assembled on this shaft a flywheel (68) and a balance weight (70) , and shows in the fig. Also the lubrication pipes (23) that feed the slide bearings and gears and the oil .

For ignition in chambers of one rotor orbital engine can be arranged in fig. -1- like α - φ - β - γ Or, α - φ - γ - β

The one rotor orbital rotary engine consider an average power engine easy to manufacture and has good advantages .

The rotary orbital internal combustion engine is superior in many ways to the conventional engines :

• low friction compare to other rotary engines .

• the discharge blower improve the discharge efficiency .

• the engine has one gate for discharge and exhaust ,that the discharge has a temperature to evaporate the fuel to give combustion without pollution

• easy to manufacture and easy to maintain .