RU2659006C1 - Fuel supply to the free-piston power module external combustion chamber by the single-cycle fuel injector drive control method - Google Patents

Abstract

FIELD: fuel combustion devices.

SUBSTANCE: compressed air for the fuel injector drive action is taken from the compressed air supply line into the common external combustion chamber 1, through the channel 29 passes to the pneumatic accumulator 31 and charges it. To supply fuel to the external combustion chamber 1, the control system sets the compressed air supply control spool valve 32 to the position, where, when compressed air enters the fuel injector drive piston cavity, the fuel injector drive piston 35 moves in one direction and the fuel injector plunger 36 supplies fuel into the external combustion chamber 1. For the next fuel supply cycle to the external combustion chamber, the control system sets the compressed air supply control spool valve 32 to the position, where, when compressed air enters the fuel injector drive piston cavity, the fuel injector drive piston 35 moves to the other direction and the fuel injector plunger 43 supplies the next fuel dose into the external combustion chamber 1.

EFFECT: disclosed is the fuel supply to the free-piston power module external combustion chamber 1 by the single-cycle fuel injector drive control method.

1 cl, 2 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to engine building, in particular to fuel equipment of internal combustion engines.

BACKGROUND

The closest prototype of the claimed invention patent 22591360 "Method for controlling the supply of fuel to the combustion chamber of an internal combustion engine with a single-stroke drive of a fuel injector"

OBJECT OF THE INVENTION

The prototype of the claimed invention provides fuel to the combustion chamber of an internal combustion engine (ICE), but the fuel is supplied in two strokes of the piston stroke, the piston of the fuel injector drive is the fuel injection cycle, and the cycle of preparing the drive for the next injection cycle. The purpose of the claimed invention is to provide fuel to the combustion chamber for each stroke of the piston of the fuel injector drive, which will simplify the drive and reduce its specific gravity.

SUMMARY OF THE INVENTION

The essence of the claimed invention is illustrated on the basis of RF patent 2422655 "Two-cylinder free-piston power module with a common external combustion chamber and a linear electric generator with opposed piston movement", which operates as follows. The combustion products (Fig. 1) from the common external combustion chamber 1 (hereinafter referred to as the external combustion chamber 1) through the channel 2 through the valve 3 enter the right (in Fig. 1) cavity of the piston 4 of the left expansion machine 5, and through the channel 6 the valve 7 - into the left cavity of the piston 8 of the right expansion machine 9. Under the action of expanding combustion products, the pistons 4 and 8 and the anchors of the linear generator 10 and 11 connected to them begin to diverge. Anchors 10 and 11 can be permanent magnets or electromagnets magnetized by a magnetizing coil 12. In both cases, the magnetic flux closes along the contour: anchor 11, stator magnet 13, anchor 10. When the anchors 10 and 11 diverge, the magnetic lines of their magnetic fields intersect, As a result, the magnetic flux changes in the stator magnet 13 and the anchors 10 and 11, and an electric pulse is generated in the stator coil 14. When the pistons and anchors reach the points of extreme divergence, the control system puts the valves 3, 7, 15, 16 in opposite positions. Now, the combustion products from the external combustion chamber 1 through the channel 2 and through the valve 15 enter the left cavity of the piston 17, and through the channel 6 and through the valve 16 into the right cavity of the piston 18. The pistons and anchors of the electric generators begin to converge. An opposite sign pulse is generated in the stator coil 14. The exhaust products of combustion when the pistons 17, 18 diverge, are released into the atmosphere through 15 and 16, and when converging through the valves 3 and 7. At the same time, from the corresponding piston cavities 4, 8, 17, 18 through the check valves 19, 20, 21, 22 pipelines 23, 24 into the external combustion chamber 1 to ensure the combustion process of the fuel air is supplied, and through the check valves 25, 26, 27, 28, air is sucked from the atmosphere.

A method for controlling the supply of fuel to the external combustion chamber of a free-piston power module with a single-stroke drive of a fuel injector is as follows. Compressed air for the fuel injector drive action is taken from the compressed air supply line (channels 23, 24) to the common external combustion chamber 1 (hereinafter referred to as the external combustion chamber) and through channel 29 (Fig. 2) through the check valve 30 enters the pneumatic accumulator 31 and charges it. To supply fuel to the external combustion chamber, the control system sets the control valve for the supply of compressed air 32 to a position as shown in FIG. 2. Compressed air from the pneumatic accumulator 31 through channels 33, 34 enters the left (in Fig. 2) cavity of the piston of the fuel injector 35. Under the action of compressed air, the piston of the fuel injector 35 moves to the right. Fuel from the right cavity of the plunger of the fuel injector 36 through the channel 37 through the check valve 38 is fed into the external combustion chamber. The exhaust air from the right cavity of the piston of the fuel injector 36 through the channels 39, 40 is discharged into the atmosphere. Fuel from a fuel tank (not shown) through a channel 41 through a non-return valve 42 is sucked into the cavity of the plunger of the fuel nozzle 36. For the next cycle of fuel supply to the external combustion chamber, the control system sets the compressed air control valve 32 to the left position. Compressed air from the pneumatic accumulator 31 through channels 33, 39 enters the right cavity of the piston of the fuel injector 35. Under the action of compressed air, the piston of the fuel injector 35 moves to the left. Fuel from the left cavity of the plunger of the fuel injector 43 is supplied through a channel 44 through a check valve 45 to an external combustion chamber. The exhaust air from the left cavity of the piston of the fuel injector 36 through the channels 34, 46 is discharged into the atmosphere. Fuel from the fuel tank through the check valve 47 is sucked into the cavity of the plunger of the fuel nozzle 36. The fuel nozzle is ready for the next, in this case the third, fuel supply cycle.

SUMMARY OF THE INVENTION

A method of controlling the supply of fuel to the external combustion chamber of a free-piston power unit with a single-stroke fuel injector drive, including a fuel injector drive, a compressed air supply line to the external combustion chamber, an air accumulator, a control system, a compressed air supply control valve, a fuel injector drive piston, a fuel injector plunger and a fuel injector plunger the combustion chamber is characterized in that the compressed air for the fuel injector drive action is taken from the compressed air supply line to the common external combustion chamber, enters the pneumatic accumulator and charges it, for supplying fuel to the external combustion chamber, the control system sets the compressed air control valve to the position in which, when compressed air enters the cavity of the fuel injector drive piston, the fuel injector drive piston moves one way and the fuel injector plunger supplies fuel to the external combustion chamber, for the next cycle of fuel supply to the external combustion chamber, the control system installs a spool systematic way supply of compressed air to a position in which, when entering the compressed air into the piston cavity fuel injector drive piston fuel injector actuator moves to the other side and the fuel injector plunger delivers another fuel dose into an external combustion chamber.

DETAILED DESCRIPTION OF THE INVENTION

Materials and technology for the implementation of the claimed invention do not go beyond the scope of modern capabilities.

GRAPHIC MATERIAL

Figure 2. Schematic diagram of a single-stroke drive of a fuel injector of a free-piston power module with an external combustion chamber.

29, 33, 34, 37, 39, 40, 41, 44, 46 - channel: 30, 38, 42, 45, 47 - check valve: 31 - pneumatic accumulator: 32 - control valve for compressed air supply; 35 - a piston of a fuel injector drive; 36, 43 - the plunger of the fuel injector.

Claims (1)

A method of controlling the supply of fuel to the external combustion chamber of a free-piston power unit with a single-stroke fuel injector drive, including a fuel injector drive, a compressed air supply line to the external combustion chamber, an air accumulator, a control system, a compressed air supply control valve, a fuel injector drive piston, a fuel injector plunger and a fuel injector plunger a combustion chamber, characterized in that the compressed air for the action of the fuel injector drive is taken from the compressed air supply line to The total external combustion chamber enters the pneumatic accumulator and charges it. To supply fuel to the external combustion chamber, the control system sets the compressed air control valve to the position in which, when compressed air enters the cavity of the fuel injector drive piston, the fuel injector drive piston moves to one side and the fuel injector plunger supplies fuel to the external combustion chamber, for the next cycle of fuel supply to the external combustion chamber, the control system installs a spool control the supply of compressed air to a position in which, when compressed air enters the cavity of the piston of the fuel injector drive, the piston of the fuel injector drive moves in the other direction and the fuel injector plunger delivers the next dose of fuel to the external combustion chamber.

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