WO1997043541A1

WO1997043541A1 - A device for distribution and regulation of fuel

Info

Publication number: WO1997043541A1
Application number: PCT/BG1996/000011
Authority: WO
Inventors: Panteley Ivanov Bahchevanov
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-13
Filing date: 1996-10-23
Publication date: 1997-11-20
Anticipated expiration: 1998-11-13
Also published as: BG100588A; AU7271496A

Abstract

A device for distribution and regulation of the fuel, having utilization in petrol and diesel internal combustion engines. It is resolved a problem to create simplified construction, that to function on a principle, different than the volume principle. It consists of a working cylinder (1), mounted in an outer pipe (3), together placed in a supporting pipe (6). On the outer cylindrical surface (14) of the working cylinder (1) is hollowed out a functional cutting (15), whose space communicates to a peripheral fuel feeding groove (18) from its wide side and a balance peripheral fuel groove (20) from the side of its vertex. In the outer pipe (3) is hollowed out an axial fuel feeding groove (21), connected to a radial fuel feeding hole (22). By its outer surface of the pipe (3) are situated fuel outlet holes (27) and grooves (28). Against every groove (28) in the supporting pipe (6) is screwed a socket (30) and on it is mounted the outlet pipe (31).

Description

A DEVICE FOR DISTRIBUTION AND REGULATION OF FUEL

AREA OF THE TECHNICS

The invention is related to a device for distribution and regulation of fuel, having an application into the fuel system of the injection petrol or diesel internal combustion engines.

PREVIOUS STATE OF THE TECHNICS

A device is known for distribution and regulation of the fuel with the next construction. It consists of a cylinder, in which is bored a central passable hole. In the upper side of the cylinder two coaxial cone holes are made, situated opposite towards the diameter of the cylinder. One hole is used to feed the fuel, the other is for the fuel

to overflow. Inside of the central hole of the cylinder a piston is assembled. The piston has a radial groove, connected to the face of the piston by an longitudinal peripheral groove. The space of the radial groove is enlarged in the area of the longitudinal groove by means of an additional hollow, limited in its upper side by a surface with an inclined edge.The piston is moved by means of camshaft and is able to move axial forwards and backwards and to rotate, by which it is pressing a different portions of a fuel. Disadvantages of the described construction of a device for distribution and regulation of fuel are the following. It works on an volume principle. A separated device is necessary for every combustion chamber, thus making the construction complex. Another disadvantage is the use of an camshaft, by which the contact of the forced couple is in a line and the wear and tear in work is increased.

TECHNICAL ESSENCE

The technical problem to be solved is to create the construction of a device for distribution and regulation of fuel which works on a principle different than the volume principle and for the construction to be simplified.

This technical problem is solved by creating a device for distribution and regulation of fuel with the following construction. It consists of a working cylinder, fitted into the hole of an outer pipe, closed on both of its sides with caps. The working cylinder together with the outer pipe are fitted into a supporting pipe.The working cylinder has an input shaft that is extended out through the corresponding cap. The input shaft is connected to an rotary moving device, geared to the crank shaft of the motor. The working cylinder is also set in an axial motion. On the outer cylindrical surface of the working cylinder is hollowed out a functional cutting with a shape of a wedge.The one side of the wedge shaped cutting is a straight line, parallel to the axis of the cylinder; the other side is inclined by a wind line and has a configuration that corresponds to the desired characteristic of injection of the fuel.The space of the wedge-shaped cutting is connected to a peripheral feeding fuel groove from its wide side and a peripheral balance fuel groove from the side of its vertex.The both radial grooves are with a variable section, increased in area, being diametrically opposed to the said wedge-shaped cutting with a purpose a balance equality of the areas by the high pressure of the fuel. In the outer pipe, an axial fuel feeding groove is cut parallel to the axis of the pipe. The axial fuel feeding groove is connected to an radial fuel feeding hole, through which the fuel from the fuel pump proceeds into the axial fuel feeding groove in the pipe. By the outer surface of the outer pipe, symmetrically to the both sides of the fuel feeding hole and perpendicular to its axis, a groove is made. Against this groove in the supporting pipe is bored a thread hole, in which is screwed a socket and on it is mounted a pipe for fuel supplied from the fuel pressure pump. The axial fuel feeding groove corresponds in length to the straight line of the said cutting in the working cylinder. It overlaps such a part of this length, that it provides a communication of the fuel with the peripheral fuel feeding groove at every axial position of the cylinder. Over the outer pipe, fuel outlet holes are situated. They are made in a plane, perpendicular to the axis of the outer pipe near to the axial fuel feeding groove. The number of holes is equal to the number of the cylinders of the motor and they are phased at equal angles. Grooves are made against the fuel outlet holes in the supporting pipe. In the middle of every groove is bored a thread hole in which is screwed a socket and in it is mounted a fuel outlet pipe. On both sides of the working cylinder, seals are situated outside of both the peripheral fuel groves. Also on both sides of the fuel outlet holes seals are incorporated and a third seal provides a hermetic of the space around the fuel inlet hole.. The outer pipe on its free side has a mounted gear ring, coupled to a moving rack. The outer pipe is axially fixed towards the supporting pipe

BRIEF DESCRIPTION OF THE DRAWINGS

An available performance of an device for distribution and regulation of the fuel according the description is illustrated in figure 1. Figure 1 illustrates the device in an longitudinal section.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

According the description and the figures the preferred embodiment of the device for distribution and regulation of the fuel has the following construction.lt consists of an working cylinder 1 , mounted into a hole 2 of the outer pipe 3, closed on both its sides by caps 4 and 5. The working cylinder 1 together with the outer pipe 3 are placed into supporting pipe 6. The working cylinder 1 has an input shaft step 7, extended out through its corresponding cap 4. The input shaft step 7 by a spline joint 8 is coupled to shaft 9 of a gear (not shown). The working cylinder 1 also has an axial motion device 10, made up of a bearing cap 11, in which is mounted a radial-axial bearing 12. To the bearing 12 is connected the rod 13, whose edge is protruding from the cap 5 and has a possibility for joining to a lever for an axial operation (not shown). Over the outer cylindrical surface 14 of the working cylinder 1 is hollowed out a functional cutting 15 with a shape of a wedge with walls 16 and 17. The wall 16 of the wedged cutting 15 is sraight, parallel to the axis of the cylinder 1 , and the inclined by an winding line wall 17 has a configuration, corresponding to the desired characteristic of injection of the fuel. The space of the wedge shaped cutting is connected to a peripheral fuel feeding groove 18 from its open wide side 19 and balance peripheral fuel groove 20 from the side of its vertex. Both the radial grooves 18 and 20 have a variable section, increased in the zone, placed diametrically opposite towards the said wedge shaped cutting 15. In the outer pipe 3 is cut an axial fuel feeding groove 21 , parallel to the axis of the pipe 3. The fuel feeding groove 21 is connected to a radial fuel feeding hole 22. By the outer surface of the pipe 3, symmetrically towards both sides of the fuel feeding hole 22 and perpendicularly towards its axis a groove 23 is made. Against the groove 23 in the supporting pipe 6 is bored a thread hole 24, in which is screwed a socket 25 and on it is mounted a pipe 26 for the supplied fuel. The fuel feeding groove 21 corresponds by its length to the sraight side 16 of the said cutting 15 in the working cylinder 1. It overlaps such a part of it, that provides a communication of the fuel with the peripheral fuel feeding groove 18 at every axial position of the cylinder 1. Over the outer pipe 3 are situated fuel outlet holes 27. They are made in a plane, perpendicular to the axis of the outer pipe 3 near to the axial fuel feeding groove 21. Their number is equal to the number of the cylinders of the motor and they are phased at equal angles. By the outer surface of the pipe 3, symmetrically towards both sides of the fuel outlet holes 27 and perpendicularly towards its axis, grooves 28 are made. Against every groove 28 in the supporting pipe 6 is bored a thread hole 29, in which is screwed a socket 30 and on it is mounted an outlet pipe 31. On both sides of the working cylinder 1 out of both the peripheral fuel grooves 18 and 20 are situated seals 32 and 33. Also on both sides of the fuel outlet holes 27 are incorporated seals 34 and 35, and a third seal 36 provides hermetic of the space around the fuel inlet hole 22. The outer pipe 3 on its free side 37 has a mounted gear ring 38, coupled to a moving rack 39. The outer pipe 3 is axially fixed towards the supporting pipe 6 by means of a groove 40 and fixture 41 made in it.

APPLICATION (UTILIZATION) OF THE INVENTION

The utilization of the device for distribution and regulation of the fuel is realized in the following way. It is fixed by means of a supporting pipe 6 to the body of the motor, so that the input shaft step 7, by a spline joint 8 is geared to shaft 9 of a gear, moved by the crank shaft of the motor (not shown). Also mounted to the body of the motor is a fuel pump (not shown), whose shaft is moved by a shaft of the motor. The fuel pump feeds the fuel with the necessary pressure to the device for distribution and regulation of the fuel through fuel pipe 26. The fuel proceeds in the axial fuel feeding groove 21 and from there in the peripheral fuel feeding groove 18 and in the space of the wedged cutting 15. By the rotating of the cylinder 1 the wedged cutting 15 reaches a fuel outlet hole 27 and passes sequentially under the fuel outlet holes 27. The phase of injection depends on the arc, that the cutting 15 circumscribes, passing under the corresponding hole 27. The said arc depends on the axial position of the cylinder 1 towards the outer pipe 3. The initiation of injection begins from the moment when the edge of the incoming side 16 of the cutting 15 crosses the hole 27, and the end of injection is when the outgoing side 17 of the cutting 15 leaves the hole 27. The regulation of the initial moment of the injection is by means of rotation of the outer pipe 3, by which the fuel outlet holes 27 dislocate towards the phase of the crankshaft. The lubrication and the cooling of the precision couple cylinder 1 and outer pipe 3 is done by the fuel in the zone between the side seals 32 and 33.

Literature: Technishes Handbuch Dieselmotoren, VEB Verlag Technik Berlin-1966

Claims

PATENT CLAIMS

A device for the distribution and regulation of fuel, connected to a fuel pump by means of a pipe, and from which outlet pipes extend , characterized by this, that it consists of a working cylinder (1) mounted into an outer pipe (3), and the working cylinder together with the outer pipe (3) are placed in a supporting pipe (6), whereupon the working cylinder (1) has an input shaft step (7), extend out of its corresponding cap (4) and by means of a spline joint (8) it is geared to a shaft (9) of a moving gear, and the working cylinder (1) has also an axial motion (10), and on the outer cylindrical surface (14) of the working cylinder (1) a functional wedged cutting (15) is hollowed out, and the space of the wedged cutting is connected to a peripheral fuel feeding groove (18) from its open wide side (19) and a peripheral balance fuel groove (20) from the side of its vertex, and in the outer pipe (3) an axial fuel feeding groove (21 ) is hollowed out, parallel to the axis of the pipe (3) and joined to a radial fuel feeding hole (22) and by the outer surface of the pipe (3) symmetrically on both sides of the fuel feeding hole (22) and perpendicular to its axis a groove (23) is made, and against the groove (23) in the supporting pipe (6) a thread hole (24) is bored, into which a socket (25) is screwed and on it a pipe (26) is mounted for the fuel proceeding from the fuel pump, at that on the outer pipe (3) are situated fuel outlet holes (27), and by the outer surface of the pipe (3), symmetrically towards both sides of the fuel outlet holes (27) and perpendicularly to its axis are made grooves (28), at that against every groove (28) in the supporting pipe (6) is bored a thread hole (29), into which a socket (30) is screwed and on it the outlet pipe (31) is mounted.

2. A device, as in claim 1 , characterized by this, that the axial movement (10) is made up by a bearing cap (11), in which is mounted a radial-axial bearing (12) and in it a rod (13) is joined whose end extends beyond the cap (5) and has the possibility for a joining to a lever for an axial operation.

3. A device, as in claim 1 , characterized by this, that the functional cutting (15) is wedge shaped with walls (16) and (17), and the one wall (16) of the cutting (15) is a straight line, parallel to the axis of the cylinder (1 ), and the wall inclined by a winding line (17) is with a configuration, corresponding to the desired characteristic of injection of the fuel.

4. A device, as in claim 1 , characterized by this, that both the radial grooves (18) and (20) have a variable section, increased in the zone, situated diametrically opposite of the wedge shaped cutting (15), so that the surfaces are balanced on both of the sides.

5. A device as in claim 1 , characterized by this, that the axial fuel feeding groove (21 ) corresponds by its length to the straight side (16) of the cutting (15) in the working cylinder (1), as it overlaps such a part of it, that provides a communication of the fuel to the peripheral fuel feeding groove (18) at every axial position of the cylinder (1).

6. A device, as in claim 1, characterized by this, that the fuel outlet holes (27) are made in a plane, perpendicular towards the axis of the outer pipe (3) near to the axial fuel feeding groove (21), as their number is equal to the number of the cylinders of the motor and are phased at equal angles.

7. A device as in claim 1 , characterized by this, that upon both sides of the working cylinder (1) out of both of the peripheral grooves (18) and (20) are placed seals (32) and (33).

8. A device as in claim 1, characterized by this, that between the inner pipe (3) and the supporting pipe (6) on both sides of the fuel outlet holes (27) are incorporated seals (34) and (35), and a third seal (36) provides hermetic of the space round of the fuel feeding hole (22).

9. A device as in claim 1 , characterized by this, that the outer pipe (3) in its free end (37) has a gear ring (38) mounted, geared to a moving rack (39).

10. A device as in claim 1 , characterized by this, that the outer pipe (3) is axially fixed towards the supporting pipe (6) by means of a groove (40) made in it and a fixture (41).

AMENDED CLAIMS

[received by the International Bureau on 24 Apri l 1997 (24.04.97) ; original claims 1 -10 replaced by amended claims 1 -8 (2 pages ) ]

1. A device for the distribution and regulation of fuel, connected to a fuel pump by means of a pipe, and from which high pressure outlet pipes extend, consist of a working cylinder, mounted into a pipe, whereupon the working cylinder has an input shaft step, extend out of its corresponding cap and by means of a spline joint it is geared to a shaft of a moving gear, and the working cylinder has also an axial motion, and on the outer cylindrical surface of the working cylinder a functional wedged cutting is hollowed out, and the space of the wedged cutting is connected to a peripheral fuel feeding groove from its open wide side, whereupon by means of sockets high pressure pipes are mounted, characterized by this, that the working cylinder (1 ) is mounted into an outer pipe (3), thus the working cylinder (1 ) together with the outer pipe (3) are placed in a supporting pipe (6) and in the outer pipe (3) an axial fuel feeding groove (21 ) is hollowed out, parallel to the axis of the pipe (3) and joined to a radial fuel feeding hole (22) and by the outer surface of the pipe (3) symmetrically on both sides of the fuel feeding hole (22) and perpendicular to its axis a groove (23) is made, whereupon against the groove (23) in the supporting pipe (6) a thread hole (24) is bored, into which a socket (25) is screwed and on it a pipe (26) is mounted for the fuel proceeding from the fuel pump, the space of the wedged cutting (15) is connected to a peripheral balance fuel groove

(20) from the side of its vertex, and on the outer pipe (3) are situated fuel outlet holes (27), and by the outer surface of the pipe (3), symmetrically towards both sides of the fuel outlet holes (27) and perpendicularly to its axis are made grooves (28), at that against every groove (28) in the supporting pipe (6) is bored a thread hole (29).

2. A device, as in claim 1 , characterized by this, that the axial movement (10) is made up by a bearing cap (11 ), in which is mounted a radial-axial bearing (12) and in it a rod (13) is joined whose end extends beyond the cap (5) and has the possibility for a joining to a lever for an axial operation.

3. A device, as in claim 1 , characterised by this, that both the radial grooves (18) and (20) have a variable section, increased in the zone, situated diametrically

AMENDED SHEET (ARTICLE 13) opposite of the wedge shaped cutting (15), so that the surfaces are balanced on both of the sides.

4. A device as in claim 1 , characterized by this, that the axial fuel feeding groove (21 ) corresponds by its length to the straight side (16) of the cutting (15) in the working cylinder (1), as it overlaps such a part of it, that provides a communication of the fuel to the peripheral fuel feeding groove (18) at every axial position of the cylinder (1 ).

5. A device as in claim 1 , characterized by this, that upon both sides of the working cylinder (1 ) out of both of the peripheral grooves (18) and (20) are placed seals (32) and (33).

6. A device as in claim 1 , characterized by this, that between the inner pipe (3) and the supporting pipe (6) on both sides of the fuel outlet holes (27) are incorporated seals (34) and (35), and a third seal (36) provides hermetic of the space round of the fuel feeding hole (22).

7. A device as in claim 1 , characterized by this, that the outer pipe (3) in its free end (37) has a gear ring (38) mounted, geared to a moving rack (39).

8. A device as in claim 1, characterized by this, that the outer pipe (3) is axially fixed towards the supporting pipe (6) by means ot a groove (40) made in it and a fixture (41).