CS201265B1 - Device for conveyance and dosing of the fuel in the working space of the ignition engine - Google Patents

Description

SUMMARY OF THE INVENTION An object of the present invention is a device for accurately dispensing fuel and transporting it to a working space of an internal combustion engine which is capable of performing this function at a minimal, economically advantageous cost.

At present, the requirements for the function of an internal combustion engine are increasing. The greatest attention is paid to reducing pollutants in the exhaust gases, reducing fuel consumption and reducing engine noise. Experience has shown that it is necessary to change the mode of transport of fuel to the engine working space and to remove the fuel from toxic anti-knock additives. Various modifications are made to the combustion engine and the design of the fuel transport devices to the engine workspace. Common features of these solutions are the increasing demands for the octane fuel number, the more complex design of the internal combustion engine, and the more complex equipment for transporting fuel to its working space.

These drawbacks are overcome by a device according to the invention which consists of a pump, an electromagnet, a coupler, two regulators and one control member, a diode supply and suppression capacitor. The pump is designed so that with a small piston stroke it is able to exert a pressure of 15 MPa and the impulse-controlled solenoid is designed to perform a working stroke in times of times of less than 1 ms. The amount of fuel supplied is regulated by two elements: a mechanical (wedge, screw, cam, etc.) that changes the stroke of the electromagnet armature and thus the pump piston and an electrical one (diode, control, ohmic resistor or transistor) .

The principle of the invention is that the armature of the impulse-controlled electromagnet together with the strut are guided by two flexible arms which form a parallelogram and the pump piston with the intake valve and the spring are on a common axis coincident or parallel to the axis of the electromagnet core and its winding the circuit is closed by a diode with a control resistor, wherein the spring of the intake valve is located in the cavity of the piston. The wall thickness of the piston is selected so that the pressure in the pump is able to press it against the pump body, without disturbing the pumped medium film between the piston and the pump body. The pump piston is flush with the pump body and sealed with one or more resilient members. All movable members (piston, strut, anchor) are returned to the starting position by a pair of springs.

An exemplary embodiment of the invention is shown in the accompanying drawing. In FIG. 1 shows the overall configuration of the device, FIG. 2 shows a connecting member, FIG. 3 is a diagram of the electrical part of the apparatus.

The coupling 11 carries the pump 19, the electromagnet 13 and the winding 14, which in the desired position lock the windows 12 in the sidewalls 11b. The armature 15 of the electromagnet 13 with the strut 16 is supported by spring arms 17 which are firmly anchored in the middle part 11a of the coupling 11. At the bottom of the coupling 11 there is a stroke regulator 18 restricting the movement of the armature 15 of the electromagnet 13. In the cavity 20a of the piston 20, there is a spring 22 of the suction valve 23, which is guided by the cavity 24 in the pump body 19. The pumped medium 25 exits the pump 19 from the pump 19. The springs 26 return the entire mechanism (pump and solenoid) to the starting position determined by the stroke regulator 18. The coil 14 of the pulse-controlled solenoid 13 is fed via the control thyristor 35 from the supply capacitor 32. The control thyristor 35 receives a trigger signal from terminal 36. By changing the control resistor 40, the pull-in time of the armature 15 of the solenoid 13 is changed, thereby correcting the power of the pump 12. The power diode 34 rectifies the alternating current from terminal 33 for the power capacitor 32 and the suppression capacitor 38. compared to the supply condensate 32 with a very small capacity (1% o) and prevents the occurrence of repeated signals for the control thyristor 35. The entire device is grounded through terminal 31.

Claims (3)

SUBJECT An apparatus for conveying and dispensing fuel to a working space of an internal combustion engine, comprising a pump, an electromagnet, regulating and operating members, characterized in that the pump (19) is connected to a pulse-controlled electromagnet (13) whose anchor (15) with the strut (16) being guided by a pair of resilient arms (17) forming a parallelogram, wherein the piston (20) and the intake valve (23) with the spring (22) are on a common axis that is identical or parallel to the axis of the electromagnet core Operation of the device is conditioned by the capacity of the power capacitor 32 and the voltage to which it is charged. The electrical charge from the supply capacitor 32 passes after the control thyristor 35 is triggered by the winding 14 of the electromagnet 13 and creates a strong magnetic field that attracts the armature 15 of the electromagnet 13 to which the arm 16 is rigidly connected. they are suspended from a pair of resilient arms 17 which form a parallelogram. The movement of the armature 15 of the solenoid 13 is transmitted by the strut 16 to the piston 20, which is injected into the pump body 19, thereby reducing the volume of the working space 27 and expelling the medium contained therein via the discharge valve 25. After discharge of the supply capacitor 32 and in the winding 14 the magnetic field of the electromagnet 13 and the spring 26 disappear, the piston 20, the strut 16 and the armature 15 of the electromagnet 13 are brought back to contact with the stroke regulator 18. The power of the device is controlled by the armature 15 the residence time of the armature 15 of the solenoid 13 in the retracted position and the springing of the mechanical part of the device so pumped medium changes the pumped amount of medium. The device according to the invention is intended for transporting and dosing fuel into the working space of an internal combustion engine and is also suitable for pumping pressure medium for hydraulic motors. BACKGROUND OF THE INVENTION (13) and its windings (14), the circuit of which is closed by a diode (39) with a control resistor (40). Device according to claim 1, characterized in that the suction valve (23) is made of a polymethyl methacrylate-based plastic. Device according to claim 1, characterized in that the suction valve (23) is made of a plastic based on copolymethacrylonitrile-butadiene-styrene.