RU2415285C2 - Rotary engine - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: in rotary engine the rotor represents cylindrical shaft with two rigidly installed blades which pass from within through slots of cylindrical drum. Drum and shaft of rotor is eccentric. Engine housing encloses the drum, and its eccentric protrusions envelope the rotation trajectory of rotor blades. Cavity of one of the protrusions is interconnected with supply channel of fuel mixture, and the other channel connects it to combustion chamber. Cavity of the other protrusion is interconnected by means of two channels with combustion chamber and atmosphere. In combustion chamber there is valve with two heads the working surface of which is located on outer side of the valve. Length of the valve is smaller than distance between seats of the valve heads. Rotor shaft and drum have bearing support.

EFFECT: design of rotary engine.

1 cl, 8 dwg

Description

The invention relates to rotary engines.

In the most common type of internal combustion engine, the reciprocating movement of the piston is usually converted by a crank mechanism into the rotational movement of the crankshaft.

Attempts to create an engine whose piston would rotate, thereby excluding the presence of a converter mechanism, have been made repeatedly. The most successful of them is the invention by an engineer F. Wankel in 1959 of a four-stroke rotary engine, which is mass-produced in Germany, the USA, and Japan (TSB, t. 26, p. 289, 290, M .: “Soviet Encyclopedia” , 1977).

In F. Wankel’s engine, chosen as a prototype, a triangular rotor piston with an internal gear wheel is rolled around a stationary gear, its faces slide along the epitrochoidal inner surface of the cylinder, cutting off the variable volumes of the chambers, which allows a four-stroke cycle of the internal combustion engine. The sealing of the chambers is provided by radial and end sealing plates. Mixture formation, ignition, lubrication, cooling are the same as in a piston engine.

Disadvantages: in the book “Theory, Design and Calculation of Tractor and Automobile Engines” (Moscow, Publishing House of Agricultural Literature, 1962, p. 13) author Boltinsky V.N. notes two drawbacks of the F. Wankel engine due to the complex inner surface of the cylinder: the difficulty of ensuring the tightness of the working chambers and creating a combustion chamber of an advantageous shape.

In addition: the rotor surface, perceiving the pressure of the fuel combustion products, is located relative to the axis of rotation of the rotor in such a way that part of the energy of the burned fuel is spent on counteracting the rotation of the rotor; some imbalance as a result of planetary motion of the rotor; the presence of gearing.

The technical result is the creation of a rotary engine.

A rotary engine is characterized in that the rotor is a cylindrical shaft with two rigidly mounted blades that pass from the inside through the slots of the cylindrical drum, while the drum and rotor shaft are eccentric, the motor housing covers the drum, and with its eccentric protrusions the trajectory of rotation of the rotor blades, the cavity of one of the protrusions communicates with the channel for supplying the fuel mixture, another channel connects it to the combustion chamber, the cavity of the other protrusion communicates with two channels with the combustion chamber and the atmosphere In contrast, in the combustion chamber there is a valve with two heads, the working surface of which is located on the outside of the valve, while the length of the valve is slightly less than the distance between the sockets of the valve heads, the rotor shaft and the drum have bearing bearings.

The drawings show:

figure 1 is a General front view of a rotary engine;

figure 2 is a General view of the left rotary engine;

figure 3 is a General top view of a rotary engine;

figure 4 - the cavity of the suction and compression;

figure 5 - cavity of the stroke and exhaust;

figure 6 - the flow of the fuel mixture into the combustion chamber;

Fig.7 - the output of the combustion products from the combustion chamber;

in Fig.8 - an additional cylindrical seal.

The rotary engine contains:

1. Case.

2. Val.

3. The drum.

4. The blade.

5. The blade.

6. The hole.

7. The channel for supplying the fuel mixture.

8. Suction and compression cavity.

9. The compression channel.

10. The combustion chamber.

11. The channel of the stroke.

12. The cavity of the stroke and exhaust.

13. Release channel.

14. The valve.

15. The candle.

16. Sealant.

The shaft 2 and the blades 4 and 5 form the rotor of the engine.

In figure 1, 2, 3, the shaft 2 of the cylindrical rotor passes inside the hollow cylindrical drum 3, the axis of the shaft 2 is shifted horizontally relative to the axis of the drum 3 by a value of 8. The blades 4 and 5 of a rectangular shape, rigidly mounted on the shaft 2, are two the slots on one generatrix of the drum 3. The ratio of the value of 8 and the length of the blades is such that when the blades are horizontally left (side view), the edges of the blades 4 and 5 become flush with the outer surface of the drum 3, when the blades are horizontal to the right, they protrude above the surface Araban the amount 2ε. The drum 3 is covered by a cylindrical housing 1 having two eccentric protrusions covering the rotation paths of the blades 4 and 5. The shaft 2 and the drum 3 have unmarked bearing bearings outside the housing 1.

In figures 4, 5, where the protrusions of the housing 1 and the drum 3 are conventionally shown in the form of circles: (figure 4), the blade 4 has the ability to rotate in the cavity 8, which channel 7 communicates with the carburetor mixing chamber, channel 9 - with the combustion chamber 10 , (Fig. 5) in parallel, the blade 5 is able to rotate in the cavity 12, which is connected by the channel 11 to the combustion chamber 10, and the channel 13 - with the atmosphere.

6, 7 in the combustion chamber 10 there is a valve 14 having two heads: an inlet of a larger diameter, an outlet of a smaller diameter. The working surfaces of the heads are located on the outside of the valve. The length of the valve 14 is slightly less than the distance between the nests of the heads, it can alternately overlap the message of the combustion chamber 10 with channels 9 and 11.

The tightness of the movable mates of the internal surfaces of the cavities 8 and 12 with the blades 4 and 5 and the outer surface of the drum 3, the slots of the drum 3 with the blades 4 and 5 is provided by unmarked plate seals.

When the shaft 2 and the drum 3 rotate, the rotor blades 4 and 5, extending above the surface of the drum 3 and returning to their original position, make a rocking motion relative to the radius of the drum 3 in the range depending on the ratio of the diameters of the drum 3 and the protrusions of the housing 1 and the value of ε, therefore, the pairing the blades 4 and 5 and the slots of the drum 3 have an additional cylindrical seal 16 in Fig.8.

Rotary engine operation

In Fig. 4, when the rotor rotates clockwise, the blade 4 creates a rarefaction zone into which the fuel mixture is drawn in through the channel 7, at the same time the fuel mixture of the previous cycle is compressed in front of the blade 4 and enters the combustion chamber 10 through the channel 9 (in Fig. 5) in parallel, the blade 5, rotated by the gases coming from the chamber 10 through the channel 11, pushes the exhaust gases in front of it through the channel 13 into the atmosphere.

For one revolution in a rotary engine four cycles of a piston internal combustion engine are performed.

6, the fuel mixture, supplied under pressure through the channel 9, raises the valve 14 and accumulates in the combustion chamber 10. At the moment the blade 4 passes through the base of the channel 9, the mixture ignites, by changing the pressure ratio, the valve 14 closes the channel 9 with the lower head, while opening access to the combustion products of the fuel in the channel 11 and further to the blades 5.

Balancing is ensured by installing counterweights on the shaft outside the engine housing, by arranging several engine modules in a block, by a combination of these methods.

The blades are lubricated with oil mist supplied to the drum cavity. To drain the oil in the drum, holes 6 are provided (Fig. 1).

Claims (1)

A rotary engine, characterized in that the rotor is a cylindrical shaft with two rigidly mounted blades that extend from the inside through the slots of the cylindrical drum, while the drum and rotor shaft are eccentric, the motor housing covers the drum, and with its eccentric protrusions the trajectory of rotation of the rotor blades, the cavity of one from the protrusions it communicates with the channel for supplying the fuel mixture, another channel connects it to the combustion chamber, the cavity of the other protrusion communicates with two channels with the combustion chamber and the atmosphere feroy in the combustion chamber there is a valve with two heads, working surface which is the outer side of the valve, the valve length slightly less than the distance between the sockets of the valve heads, the rotor and the drum shaft have bearing supports.

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