WO1999030014A1

WO1999030014A1 - The combustion chamber of internal combustion engines

Info

Publication number: WO1999030014A1
Application number: PCT/KZ1998/000001
Authority: WO
Inventors: Ildar Ibragimov
Original assignee: TSAI ARTUR
Current assignee: TSAI ARTUR
Priority date: 1997-12-09
Filing date: 1998-01-08
Publication date: 1999-06-17
Anticipated expiration: 2000-06-09

Abstract

The invention concerns mechanical engineering, namely propulsion engineering and can be used in engines of internal combustion with chambers of combustion having special form. The problem of the invention is development of the special form of the combustion chamber allowing to use as much as possible great quantity of formed gas molecules for work fulfilment, and to apply effect to collapse of shock waves. Technical result - the increase of efficiency of the internal combustion engine is reached by that in the combustion chamber formed by the hollows - in the piston bottom and in the head of the cylinder, the hollows are carried out conic, half-spherical, W-form and also in the form of a limited cone with tops, directed to the opposite sides, thus the lateral surfaces of the piston and cylinder form an angle of 80-100°. In all variants the combustion chamber can be carried out as at least one ring cavity. Besides in each of listed variants the combustion chamber can in addition contain at least one hollow both in the piston bottom and in the head of the cylinder.

Description

THE COMBUSΗON CHAMBER OF INTERNAL COMBUSΗON ENGINES

TECHNICAL FILD The invention concerns to mechanical engineering, namely to the propulsion engineering and can be used in internal combustion engines with combustion chambers that have the special form.

BACKGROUND ART There is the combustion chamber of the internal combustion engine formed by walls of the cylinder, head of the cylinder and the piston bottom (Orlin A.S., Alekseev V.P., Kostygov N.I. and others. Engines of internal combustion. The mechanism and work of reciprocator and combined engines.- M.: Mechanical engineering, 1970, P. 103). The lack of the specified device is low efficiency.

The closest is the combustion chamber of the reciprocating internal combustion engine formed by hollows, one is in the piston bottom, another — in the head of the cylinder. The combustion chamber is carried out as a cylindrical hollow, the longitudinal axis of which is perpendicular to an axis of the cylinder (copyright certificate USSR #337547, cl. F02B 23/08, 1972)

The construction of the specified chamber does not allow to increase efficiency of internal combustion.

It is known that in a vessel along each of coordinate axes OX, OY, OZ moves only 1/3 of common quantity of gas molecules being in unit of vessel volume. The half of molecules from this share will move from a wall of a vessel inside it and therefore only 1/6 molecules being in unit of volume will move in the direction of a vessel wall (Zisman G.A., Todes O.M., Course of common physics. Part I.

- Kiev. Dnipro, 1994, P.91)

Above- stated item also concerns to gases formed as result of combustion of the mix in the combustion chamber. Hence, by use of the combustion chamber formed by walls of the cylinder, piston bottom and head of the cylinder, the large part of extending gases' energy is spent ineffectively as the useful work is made only by molecules of gas affecting on the piston bottom.

The molecules of gas affecting on the cylinder walls do not make work on moving the piston to the bottom dead point. The force of affecting impinging molecules of gas or gas pressure on the piston P= l/3nmv² or P=2/3 ne, where

n — concentration of molecules; m — weight of molecules; v — average speed of molecules; e — kinetic energy of molecules linear movement. As the significant part of gas molecules influences walls of the cylinder the kinetic energy of these molecules is not spent effectively and does not make useful work that results in decrease of efficiency.

DISCLOSURE OF INVENTION The invention problem is development of the special form of the combustion chamber allowing to use as much as possible great quantity of formed molecules of gas for fulfilment of work, and to apply effect of collapse of shock waves. Technical result — the increase of efficiency of the internal combustion engine is reached by that in the combustion chamber formed by hollows in the piston bottom and in the head of the cylinder, the hollows have the conic form with tops of cones directed to the opposite sides, thus the lateral surfaces of cones form an angle 80 — 100°.

The second variant of the combustion chamber of the internal combustion engine, formed by hollows in the piston bottom and in the head of the cylinder is characterised by that the hollow in the piston bottom has the form of a spherical segment, and the hollow in the head of the cylinder is carried out as conic with top of the cone directed to the opposite to the piston bottom.

In the third variant of the combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head of the cylinder, the hollow in the head of the cylinder has the form of a spherical segment, and the hollow in the piston bottom is carried out as conic with top of the cone directed to the opposite to the head of the cylinder.

In the fourth variant of the combustion chamber of the internal combustion engine formed by hollows — one is in the piston bottom, another — in the head of the cylinder, the hollows are carried out as spherical segments. In the fifth variant of the combustion chamber of the internal combustion engine the hollows are carried out as truncated cones with the smaller basis directed to the opposite sides, thus the surfaces of truncated cones form an angle 80 — 100°.

The sixth variant of the combustion chamber of the internal combustion engine is characterised by that the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has the conic form with top of the cone directed to the opposite to the piston bottom, thus lateral surfaces of the cone and truncated cone form an angle 80 — 100°.

The seventh variant of the combustion chamber of the internal combustion engine differs by that the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom, lateral surfaces of the cone and truncated cone form an angle 80 — 100°.

In the eighth variant of the device the hollow in the head of the cylinder has the form of a spherical segment, and the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder.

In the ninth variant the hollow in the piston bottom has the form of a spherical segment, and the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom. In the tenth variant the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has in section W-form formed by two cones with tops directed to the opposite to the piston bottom.

In the eleventh variant the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom, and the hollow in the piston bottom has in section W-form formed by two cones with tops directed to the opposite to the head of the cylinder.

In the twelfth variant the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has in section W-form formed by two cones with tops directed to the opposite to the piston bottom.

In the thirteenth variant the hollow in the piston bottom has the form of half-sphere, and the hollow in the head of the cylinder has in section W-form formed by two cones with tops directed to the opposite to the piston bottom. In the fourteenth variant the hollow in the head of the cylinder has the form of half-sphere, and the hollow in the piston bottom has in section W-form formed by two cones with tops directed to the opposite to the head of the cylinder.

According to all listed variants the combustion chamber can be carried out as at least one ring cavity. Besides in each of listed variants the combustion chamber can contain at least one hollow both in the piston bottom and in the head of the cylinder.

For fulfilment variants of the combustion chamber formed by the piston with the bottom without hollows and ledges the closest is the combustion chamber formed by the piston bottom and the hollow in the head of the cylinder having the square form (Dmitriyevsky AN., Tyufyakov A.S., Petrol engines. -M.: Mechanical engineering, 1993, PJ9) The specified device has the same lacks as listed above.

The fifteenth variant of the combustion chamber of the internal combustion engine formed by the piston bottom and the hollow in the head of the cylinder is characterised by that the hollow has the conic form with top of the cone directed to the opposite to the piston bottom that form with the lateral surface of the cone an angle 80 — 100° According to the sixteenth variant of the combustion chamber of the internal combustion engine formed by the piston bottom and hollow in the head of the cylinder, the hollow has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom. The piston bottom and the lateral surface of the truncated cone form an angle 40 — 50°.

The seventeenth variant of the combustion chamber formed by the piston bottom and hollow in the head of the cylinder differs by that the hollow has the form of half-sphere. The fifteenth, the sixteenth and the seventeenth variants of the device can have the combustion chamber carried out as at least one ring cavity in the head of the cylinder or the chamber can contain at least one hollow in the head of the cylinder. For variants of fulfilment of the combustion chamber formed by head of the cylinder having the flat form without ledges and hollows the closest is the combustion chamber of the internal combustion engine formed by the head of the cylinder, by lateral walls of the cylinder and the hollow in the piston bottom at its lateral surface (Broze D.D. Combustion in reciprocator engines. - M.: Mechanical engineering, 1969, PJ98). All lacks belonging to above mentioned known devices concern to the given device too.

In the eighteenth variant of the combustion chamber of the internal combustion engine formed by head of the cylinder and hollow in the piston bottom, the hollow has the conic form with top of the cone directed to the opposite to the head of the cylinder. The head of the cylinder and the lateral surface of the cone form an angle 40 —50°.

In the nineteenth variant the hollow has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder. The head of the cylinder and lateral surface of the truncated cone form an angle 40- 50°.

According to the twentieth variant of the device the combustion chamber is formed by the head of the cylinder and half- spherical hollow in the piston bottom.

The chamber according to the eighteenth, nineteenth and twentieth variants differs by that it can be carried out as an at least one ring cavity, or to contain in addition at least one hollow in the piston bottom.

Twenty first variants of the device is characterised by that the hollow in the head of the cylinder has the form of a cone with top directed to the opposite to the piston bottom, and the hollow in the piston bottom has in section W-form, thus the combustion chamber can be carried out as an at least one ring cavity, or to contain in addition at least one hollow both in the piston bottom and in the head of the cylinder.

Declared variants of the device allow to use as much as possible great quantity of formed gas molecules for work fulfilment. Fulfilment of the combustion chamber according to the invention creates effect of collapse of shock waves, that will result in formation of the zone of the increase of pressure and temperature (cumulative effect) inside the combustion chamber, and increase of total energy, transmitted to the piston.

Besides declared variants of the combustion chamber allow to increase turbulization intensity by the additional collision of fuel jets and air owing to their reflection from walls of the chamber.

In diesel engines of internal combustion the combustion chamber is filled by air which is exposed to compression. Fuel is injected through injector under large pressure into the combustion chamber during compression, then pulverised and mixed up with air. The increase of turbulization intensity in the combustion chamber of the diesel internal combustion engine improves process of fuel mixing with air and promotes formation of a more similar fuel-air mix that increases completeness of fuel combustion and in turn increases the efficiency of the engine.

In gasoline-engines of internal combustion the carburetion process comes to an end in the combustion chamber where the fuel-air mix is in addition warmed up by residual gases. Therefore intensive turbulization in the combustion chamber of gasoline -engines also increases quality of mixing and uniformity of a fuel-air mix that promotes complete fuel combustion and the increase of engine efficiency.

BRIEF DESCRIPTION OF DRAWINGS On the fig. 1 the 1-t variant of the device is represented, on the fig. 2 the 2-d variant of the device is represented, on the fig. 3 the 3-rd variant of the device is represented, on the fig. 4 the 4-th variant of the device is represented, on the fig. 5 the 5-th variant of the device is represented, on the fig. 6 the 6-th variant of the device is represented, on the fig. 7 the 7-th variant of the device is represented, on the fig. 8 the 8-th variant of the device is represented, on the fig. 9 the 9-th variant of the device is represented, on the fig. 10 the 10-th variant of the device is represented, on the fig. 11 the 11-th variant of the device is represented, on the fig. 12 the 12-th variant of the device is represented, on the fig. 13 the 13-th variant of the device is represented, on the fig. 14 the 14-th variant of the device is represented, on the fig. 15 the 15-th variant of the device is represented, on the fig. 16 the 16- th variant of the device is represented, on the fig. 17 the 17-th variant of the device is represented, on the fig. 18 the 18-th variant of the device is represented, on the fig. 19 the 19-th variant of the device is represented, on the fig. 20 the 20-th variant of the device is represented, on the fig. 21 the 21-th variant of the device is represented.

The combustion chamber of the internal combustion engine is formed by the head of the cylinder 1 with the hollow 2 and piston bottom 3 with the hollow 4. THE MODES FOR CARRING OUT THE INVENTION Technical result — the increase of efficiency of the internal combustion engine is reached by that in the combustion chamber formed by hollows — in the piston bottom and in the head of the cylinder, the hollows have the conic form with tops of cones directed to the opposite sides, thus the lateral surfaces of cones will form an angle 80 — 100°.

The second variant of the combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head of the cylinder is characterised by that the hollow in the piston bottom has the form of a spherical segment, and the hollow in the head of the cylinder has the conic form with top of the cone directed to the opposite to the piston bottom. In the third variant of the combustion chamber of the internal combustion engine formed by hollows — in the piston bottom and in the head of the cylinder, the hollow in the head of the cylinder has the form of a spherical segment, and the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder.

In the fourth variant of the combustion chamber of the internal combustion engine formed by hollows — one in the piston bottom, another — in the head of the cylinder, the hollows are carried out as the spherical segments.

In the fifth variant of the combustion chamber of the internal combustion engine the hollows are carried out as the truncated cones with the smaller basis directed to the opposite sides, thus the surfaces of truncated cones form an angle 80 — 100°. The sixth variant of the combustion chamber of the internal combustion engine is characterised by that the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has the conic form with top of a cone directed to the opposite to the piston bottom, thus lateral surfaces of the cone and truncated cone form an angle 80 — 100°. The seventh variant of the combustion chamber of the internal combustion engine differs by that the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom, the lateral surfaces of the cone and truncated cone form an angle 80 — 100°. In the eighth variant of the device the hollow in the head of the cylinder has the form of a spherical segment, and the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder.

In the ninth variant the hollow in the piston bottom has the form of a spherical segment, and the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom.

In the tenth variant the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has in section W-form formed by two cones with tops directed to the opposite to the piston bottom. In the eleventh variant the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom, and the hollow in the piston bottom has in section W-form formed by two cones with tops directed to the opposite to the head of the cylinder.

In the thirteenth variant the hollow in the piston bottom has the form of half- sphere, and the hollow in the head of the cylinder has in section W-form formed by two cones with tops directed to the opposite to the piston bottom.

In the fourteenth variant the hollow in the head of the cylinder has the form of half-sphere, and the hollow in the piston bottom has in section W-form formed by two cones with tops directed to the opposite to the head of the cylinder.

According to all listed variants the combustion chamber can be carried out as at least one ring cavity. Besides in each of listed variants the combustion chamber can in addition contain at least one hollow both in the piston bottom and in the head of the cylinder.

The fifteenth variant of the combustion chamber of the internal combustion engine formed by the piston bottom and the hollow in the head of the cylinder, is characterised by that the hollow has the conic form with top of the cone directed to the opposite to the piston bottom that form with the lateral surface of the cone an angle 80 — 100°.

According to the seventeenth variant of the combustion chamber of the internal combustion engine formed by the piston bottom and hollow in the head of the cylinder, the hollow has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom. The piston bottom and the lateral surface of the truncated cone form an angle 40 — 50°.

The seventeenth variant of the combustion chamber formed by the piston bottom and hollow in the head of the cylinder differs by that the hollow has the form of half-sphere. The fifteenth, the sixteenth and the seventeenth variants of the device can have the combustion chamber carried out as at least one ring cavity in the head of the cylinder or it can in addition contain at least one hollow in the head of the cylinder.

For fulfilment variants of the combustion chamber formed by the head of the cylinder having the flat form without ledges and hollows, the closest is the combustion chamber of the internal combustion engine formed by the head of the cylinder, by lateral walls of the cylinder and hollow in the piston bottom at its lateral surface (Broze D.D. Combustion in reciprocator engines. - M.: Mechanical engineering, 1969, PJ98). All lacks, belonging to set forth above known devices concern to the given device too.

In the eighteenth variant of the combustion chamber of the internal combustion engine formed by head of the cylinder and hollow in the piston bottom, the hollow has the conic form with top of the cone directed to the opposite to the head of the cylinder. The head of the cylinder and the lateral surface of the cone form an angle 40—50°.

In the nineteenth variant the hollow has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder. The head of the cylinder and the lateral surface of the truncated cone form an angle 40—50°.

The twenty first variant of the device is characterised by that the hollow in the head of the cylinder has the form of a cone with top directed to the opposite to the piston bottom, and the hollow in the piston bottom has in section W-form thus the combustion chamber can be carried out as an at least one ring cavity, or to contain in addition at least one hollow both in the piston bottom and in the head of the cylinder. INDUSTRIAL APPLICABILITY

The chamber works as follows.

During the piston movement to the top dead point the air is superseded into the combustion chamber where gets a turbulent movement. By injector (it is not shown) submission of fuel is made, the jets of the last evaporating collide with air flow and mix up. By reflection of air flow and fuel vapours from the chamber walls there is the intensive turbulization of the mix that provides more qualitative mixing of fuel with air and more complete fuel combustion.

By use gasoline -engine of the internal combustion fuel and air are mixed outside the combustion chamber. The ready mix is fed to the combustion chamber. During intake and compression of the mix there is the additional mixing of fuel with air that promotes intensive turbulization of the mix inside the combustion chamber. It provides completeness of fuel combustion.

At combustion of fuel all formed molecules of gas make useful work as in the combustion chamber there are not gases zones that contact with the lateral surface of the cylinder. One part of gas molecules impacts the hollow in the piston bottom pushing it to the bottom dead point. Another part of gas molecules impacts the hollow in the head of the cylinder and being reflected from a surface of the hollow creates additional pressure on the piston.

Besides by the collapse effect of shock waves total energy transmitted to the piston is increased, that allows to increase coefficient of the engine half as much again in comparison with known devices.

The application of the invention into engines does not require the new technologies, materials and significant change of existing manufacture lines and industrial operations.

Claims

1. The combustion chamber of the internal combustion engine formed by two hollows, one is in the piston bottom, another — in the head of the cylinder, distinguishing by that hollows have the conic form with tops of cones directed to the opposite sides.

2. The chamber on item 1, distinguished by that it is carried out as at least one ring cavity.

3. The chamber on item 1, distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

4. The chamber on item 1, distinguished by that lateral surfaces of cones form an angle 80-100°.

5. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head cylinder, distinguished by that the hollow in the piston bottom has the form of a spherical segment and the hollow in the head of the cylinder has the conic form with top of the cone directed to the opposite to the piston bottom.

6. The chamber on item 5 distinguished by that it is carried out as at least one ring cavity.

7. The chamber on item 1 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

8. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head cylinder, distinguished by that the hollow in the head of the cylinder has the form of a spherical segment, and the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder.

9. The chamber on item 8 distinguished by that it is carried out as at least one ring cavity.

10. The chamber on item 8 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

11. The combustion chamber of the internal combustion engine formed by two hollows, one is in the piston bottom, another — in the head of the cylinder, distinguished by that hollows have the form of spherical segments.

12. The chamber on item 11 distinguished by that it is carried out as at least one ring cavity.

13. The chamber on item 11 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

14. The combustion chamber of the internal combustion engine formed by two hollows, one is in the piston bottom, another — in the head of the cylinder, distinguished by that the hollows have the form of truncated cones with the smaller basis directed to the opposite sides.

15. The chamber on item 14 distinguished by that it is carried out as at least one ring cavity.

16. The chamber on item 14 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

17. The chamber on item 14 distinguished by that surfaces of truncated cones form an angle 80-100°.

18. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head of the cylinder, distinguished by that the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder, and hollow in the head of the cylinder has the conic form with top of the cone directed to the opposite to the piston bottom.

19. The chamber on item 18 distinguished by that it is carried out as at least one ring cavity.

20. The chamber on item 18 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

21. The chamber on item 18 distinguished by that lateral surfaces of the cone and truncated cone form an angle 80 - 100°.

22. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head cylinder, distinguished by that the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder, and hollow in the head of the cylinder has the form of an truncated cone with the smaller basis directed to the opposite to the piston bottom.

23. The chamber on item 22 distinguished by that it is carried out as at least one ring cavity.

24. The chamber on item 22, distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

25. The chamber on item 22 distinguished by that lateral surfaces of the cone and truncated cone form an angle 80 - 100°.

26. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head cylinder, distinguished by that the hollow in the head of the cylinder has the form of a spherical segment, and the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite of the head of the cylinder.

27. The chamber on item 26 distinguished by that it is carried out as at least one ring cavity.

28. The chamber on item 26 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

29. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head cylinder, distinguished by that the hollow in the piston bottom has the form of a spherical segment, and the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom.

30. The chamber on item 29 distinguished by that it is carried out as at least one ring cavity.

31. The chamber on item 29 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

32. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head cylinder, distinguished by that the hollow in the piston bottom has the conic form with top of the cone directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has W-form formed by two cones with tops directed to the opposite to the piston bottom.

33. The chamber on item 32 distinguished by that it is carried out as at least one ring cavity.

34. The chamber on item 32 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

35. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head of the cylinder, distinguished by that the hollow in the head of the cylinder has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom, and the hollow in the piston bottom has in section W-form formed by two cones with tops directed to the opposite to the head of the cylinder.

36. The chamber on item 35 distinguished by that it is carried out as at least one ring cavity.

37. The chamber on item 35 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

38. The combustion chamber of the internal combustion engine formed by hollows — in the piston bottom and in the head of the cylinder, distinguished by that the hollow in the piston bottom has the form of a truncated cone with the smaller basis directed to the opposite to the head of the cylinder, and the hollow in the head of the cylinder has in section W-form formed by two cones with tops directed to the opposite to the piston bottom.

39. The chamber on item 38 distinguished by that it is carried out as at least one ring cavity.

40. The chamber on item 38 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

41. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head of the cylinder, distinguished by that the hollow in the piston bottom has the form of half-sphere, and the hollow in the head of the cylinder has in section W-form formed by two cones with tops directed to the opposite to the piston bottom.

42. The chamber on item 41 distinguished by that it is carried out as at least one ring cavity.

43. The chamber on item 41 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

44. The combustion chamber of the internal combustion engine formed by hollows in the piston bottom and in the head of the cylinder, distinguished by that the hollow in the head of the cylinder has the form of half-sphere, and the hollow in the piston bottom has in section W-form formed by two cones with tops directed to the opposite to the head of the cylinder.

45. The chamber on item 44 distinguished by that it is carried out as at least one ring cavity.

46. The chamber on item 44 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.

47. The combustion chamber of the internal combustion engine formed by the piston bottom and the hollow in the head cylinder, distinguished by that the hollow has the conic form with top of the cone directed to the opposite to the piston bottom.

48. The chamber on item 47 distinguished by that it is carried out as at least one ring cavity.

49. The chamber on item 47 distinguished by that it contains in addition at least one hollow in the head of the cylinder.

50. The chamber on item 47 distinguished by that the piston bottom and the lateral surface of the cone form an angle 40 — 50°.

51. The combustion chamber of the internal combustion engine formed by the piston bottom and the hollow in the head of the cylinder, distinguished by that the hollow has the form of a truncated cone with the smaller basis directed to the opposite to the piston bottom.

52. The chamber on item 51 distinguished by that it is carried out as at least one ring cavity.

53. The chamber on item 51 distinguished by that it contains in addition at least one hollow in the head of the cylinder.

54. The chamber on item 51 distinguished by that the piston bottom and the lateral surface of the truncated cone form an angle 40 — 50°.

55. The combustion chamber of the internal combustion engine formed by the piston bottom and the hollow in the head cylinder, distinguished by that the hollow has the form of half- sphere.

56. The chamber on item 55 distinguished by that it is carried out as at least one ring cavity.

57. The chamber on item 55 distinguished by that it contains in addition at least one hollow in the head of the cylinder.

58. The combustion chamber of the internal combustion engine formed by the head of the cylinder and the hollow in the bottom piston, distinguished by that the hollow has the conic form with top of the cone directed to the opposite head of the cylinder.

59. The chamber on item 58 distinguished by that it is carried out as at least one ring cavity.

60. The chamber on item 58 distinguished by that it contains in addition at least one hollow in the piston bottom.

61. The chamber on item 58 distinguished by that the head of the cylinder and lateral surface of the truncated cone form an angle 40 — 50°.

62. The combustion chamber of the internal combustion engine formed by the head of the cylinder and the hollow in the bottom piston, distinguished by that the hollow has the form of a truncated cone with the smaller basis directed to the opposite to the cylinder head.

63. The chamber on item 62 distinguished by that it is carried out as at least one ring cavity.

64. The chamber on item 62 distinguished by that it contains in addition at least one hollow in the piston bottom.

65. The chamber on item 62 distinguished by that the head of the cylinder and lateral surface of the truncated cone form an angle 40 — 50°.

66. The combustion chamber of the internal combustion engine formed by the head of the cylinder and the hollow in the bottom piston, distinguished by that the hollow has the form of half-sphere.

67. The chamber on item 66 distinguished by that it is carried out as at least one ring cavity.

68. The chamber on item 66 distinguished by that it contains in addition at least one hollow in the piston bottom.

69. The combustion chamber of the internal combustion engine formed by hollows — in the piston bottom and in the head of the cylinder, distinguished by that the hollow in the head of the cylinder has the form of a cone with top directed to the opposite to the piston bottom, and the hollow in the piston bottom has in section W-form formed by two cones with tops directed to the opposite to the head of the cylinder.

70. The chamber on item 69 distinguished by that it is carried out as at least one ring cavity.

71. The chamber on item 69 distinguished by that it contains in addition at least one hollow both in the piston bottom and in the head of the cylinder.