RU2093689C1 - Feed system for internal combustion engine - Google Patents

Abstract

FIELD: engine engineering. SUBSTANCE: feed system has fuel pipe line, inlet and outlet systems, and combustion chamber. The mixture generator is provided in the seat of the inlet valve of the engine made up as a ring groove with orifices that are brought to the surface of the working chamfering of the seat at a right angle to the chamfering at its center. The swirler is made inside the cylinder of the engine as a deflecting ring groove on the head of the bank, as a guide deflecting ring groove on the sucking valve, and as a ring groove on the bottom of the engine piston. The batcher is provided in the fuel pipe line and is made up as solenoid valve, which operates as a valving device, idling valve provided with adjustable screw for idling passage and working diaphragm, pressure regulator-accelerator with eccentric member for setting the regulator-accelerator in operation when the engine idles, and fuel pump with a reducing valve for maintaining working pressure in the fuel system of the engine. EFFECT: enhanced reliability. 5 dwg

Description

 The invention relates to mechanical engineering, in particular to engine building, and in particular to a power system of an internal combustion engine and can be widely used on all internal combustion engines.

A known power system for a carburetor engine containing a fuel tank, fuel pipe, filter sump, fuel pump, carburetor, intake, exhaust system, where the carburetor is the body of the mixture and dosing [1]
The known carburetor engine power system has significant drawbacks, such as: design complexity, difficulty in manufacturing and maintenance, poor mix preparation and dosing at all engine operating modes, and as a result, fuel overruns, reduced engine life, poor environmental factor.

A known power system for an internal combustion engine operating on liquid light fuel using electronics for dosing injected fuel, where fuel is injected into each cylinder or a pair of cylinders by a nozzle into the flow of sucked air when the suction valve is opened [2]
The known fuel supply system of an internal combustion engine by injection has significant disadvantages, such as: poor quality of mixture formation, design complexity, poor environmental factor.

Closest to the proposed invention is a power supply system for an engine running on liquid light fuel, comprising a fuel line, a fuel transfer element located in the connecting channel and made in the form of ejectors placed in one another, and a combustion chamber [3]
The specified engine power supply system is characterized by a low quality of mixture formation and poorly controlled, uncontrolled fuel metering, has high fuel consumption and a poor environmental factor.

 The technical problem solved by the invention is to create a power supply system for an internal combustion engine with a high-quality, controlled, metered mixture preparation, while simplifying the design and improving engine performance.

 The problem is solved in that the power supply system of the internal combustion engine is equipped with a mixer, made directly in the engine cylinder, on the inlet valve seat in the form of an annular groove with calibrated holes, of which at least one, facing the surface of the seat facet, at right angles to this facet and in its center. In this case, the holes in the seat are calibrated and their number is calculated with the aim of dosing fuel at full engine load, the calibrated holes in the valve seat are made at right angles to this chamfer so that when the fuel is injected, the trickle beats at right angles to the surface of the suction valve and breaks to the smallest drops, and the intake air also at a right angle to the fuel stream carried it to the swirl, calibrated holes are made in the center of the chamfer on the valve seat in order to increase their wear resistance spine, and in order to increase the throughput of the calibrated hole in the valve seat and not reduce its wear resistance, they are performed by several pieces, but not less than one, with a diameter, for example, three tenths of a millimeter, each hole. The fuel dispenser is made on the fuel line of the engine power system in the form of series-connected devices: an electromagnetic valve, which acts as a shut-off device included in the ignition circuit, and which opens, closes when the ignition is turned on and off, and opens or closes the fuel passage to the mixer, valve idling is made with an adjustable cross-section, screwing or unscrewing the screw channel idle, designed to operate the engine at idle companies, and with a working diaphragm made of, for example, oil and petrol resistant rubber and working as a kind of locking and regulating device, the role of which is to fit tightly to the plane of the idle valve so that fuel is not allowed to pass to the mixer when the engine is idling, and at the same time, rising above the plane of the idle valve, pass fuel at the appropriate pressure of this fuel to the mixture former when the engine is operating under load conditions. The reducer-accelerator acts as an accelerator, with its help the driver controls the operation of the engine, when the pedal is pressed, the fuel is reduced, for example, with pressure from zero to two kilograms, which through the idle valve enters the engine cylinder to the mixer. The reducer-accelerator is made single-chamber from a non-ferrous metal alloy (for example, when we made the prototype, we used the BAO-5-2 serial acetylene reducer, which worked perfectly on gasoline) with an idle eccentric engine switch, which you can turn on the accelerator reducer for operation the engine at idle or turn off when the engine is stopped for a long time. The stem of the gearbox-accelerator can be adjusted in length, if necessary during operation. The fuel pump is made with a pressure reducing valve and is designed to maintain the working pressure of the fuel in the engine power system, for example, at the level of two kilograms. The swirl of the mixture is made in the engine cylinder in the form of a breakaway ring groove on the block head, in the form of a guide breakaway ring groove on the suction valve and in the form of an annular groove made on the piston bottom, which in turn also improves the mixture preparation in the engine cylinder.

 In FIG. 1 is a general diagram of the engine power system; in FIG. 2 is a schematic cross-sectional view of the engine mix generator as shown in AA in FIG. one; in FIG. 3 is a schematic sectional view of the idle valve BB-B in FIG. one; in FIG. 4 is a schematic sectional view of the idle valve according to G-D in FIG. one; in FIG. 5 is a schematic sectional view of a blender according to AA in FIG. 2.

 An example of the implementation of the proposed solution.

 The power supply system of an internal combustion engine contains a fuel tank 1 for fuel supply, a fuel filter 2 sitting on the main fuel line, a fuel pump 3 for supplying fuel to the main line, a pressure reducing valve 4 for maintaining operating pressure in the power system, with a fuel bypass channel 5, a gearbox accelerator 6 for controlling the operation of the engine of reduced fuel supply using the pedal 7 and using the eccentric switch 8 of the gearbox-accelerator, idle valve 9 to ensure operation the engine at idle is equipped with a fuel inlet channel 10, which regulates the screw being screwed into 11 a section with an idle channel, a fuel outlet channel 12, a fuel inlet hole 13 under the diaphragm, an aperture 14 for fuel exit from the diaphragm, an idle valve diaphragm 15 for fuel to pass into engine modes, the diaphragm casing 16 to limit the diaphragm lift, the idle valve mounting bolts 17, the solenoid valve 18 acting as a shut-off device, the fuel supply manifold 19 for distributing fuel over cylin drum, internal combustion engine 20, mixture generator 21 for mixture formation directly in the engine cylinder, block head 22, air inlet 23, fuel supply channel 24 to the mixture generator in block head, annular fuel groove 25 on seat 26, calibrated hole 27 facing the surface chamfers 28 of the saddle at right angles to this chamfer and in its center, the suction valve 29, the mixing guide ring groove 30 on the suction valve, the swirl ring groove 31 on the block head, the piston 32 of the engine, swirling annular groove 33 on the piston bottom, valve guide sleeve 34, fuel supply fitting 35.

 The power supply system of an internal combustion engine operates as follows.

 To start the engine, after prolonged stopping, turn the eccentric switch 8 of the gearbox-accelerator 6 up, preparing the gearbox-accelerator 6 for engine idling, then turn on the ignition switch, as a result, the power circuit of the electromagnetic valve 18 is closed and the fuel passage to the mixer is opened and in parallel the starter circuit will be closed, which will begin to turn the engine shaft, and therefore, will bring the fuel pump 3 to work. Fuel from the tank 1 through the filter 2 is pumped into the fuel the highway, and the pressure reducing valve 4 maintains a constant working pressure, and passes the excess to the suction valve of the fuel pump 3 through the bypass channel 5. The reducer-accelerator 6, due to the fact that the eccentric switch 8 is turned on, will reduce the fuel necessary for the engine to idle revolutions, and as a result, the fuel will go to the idle valve 9, where it will pass through the fuel inlet channel 10, and through the channel 11 regulated along the screw cross-section, and then through the fuel exit channel 12, through an open electric the solenoid valve 18 will enter the fuel manifold 19, from where it will be supplied through the cylinders to the mixers 21, through the channel 24 in the head of the block 22, and the annular groove 25 of the seat 26, and through the calibrated hole 27, during the suction stroke, when the valve 29 opens, the fuel in a thin stream at right angles to the chamfer 28 and at its center, they will flow out at a high speed from the calibrated hole 27 during the entire suction stroke, and the trickle of fuel, hitting the plate of the suction valve 29, will break into small droplets that are sucked by air a, moving at high speed and at right angles to the stream of injected fuel, is carried to the mixing hole 30 on the suction valve 29, and, swirling, is directed to the annular groove 31 on the head of the block 22, with which the mixture of fuel and air is directed to the center of the cylinder of the engine and to the piston head, where further turbulence occurs with the help of an annular groove 33 on the piston bottom 32. It is important to note that the dose of injected fuel with calibrated holes 27 is evenly distributed over the entire suction stroke, in ultate mixture obtained high quality. After the end of the suction stroke, the suction valve 29 closes, closes both the calibrated openings 27, and the air inlet 23 and after the compression stroke, a stroke of the stroke occurs, and then the cycles are repeated, and the engine is idling.

 To switch the engine to work under load, the driver presses the pedal 7 of the gearbox-accelerator 6, which increases the pressure of the reduced fuel, up to the maximum, depending on the pressure applied to the pedal 7, which enters the idle valve 9 and the fuel inlet channel 10 and through the hole 13, by raising the diaphragm 15 with its pressure, it passes into the channel 12 through the hole 14 and enters the cylinders of the engine 20 to the mixers 21, and the engine 20 operates under load at medium and high speeds in the manner described above.

 To stop the engine 20 turns off the ignition, the solenoid valve 18 breaks the power circuit, and it shuts off the fuel, the engine 20 stops. When the engine 20 is stopped for a long time, by turning the eccentric switch 8, the gearbox-accelerator 6 is turned off and the engine 20 goes into long-term storage.

 The proposed power system of the internal combustion engine can successfully work on all internal combustion engines.

Claims (1)

 An internal combustion engine power supply system comprising a fuel line, a fuel supply member, a combustion chamber, characterized in that the mixture former is made in the seat of the engine intake valve in the form of an annular groove with at least one openings facing the surface of the seat facet, at right angles to this chamfer and in its center, the swirl of the mixture is made in the engine cylinder in the form of a jack ring groove on the head of the block, in the form of a guide jack ring groove on the suction and in the form of an annular groove on the piston bottom, the fuel dispenser is made on the fuel line in the form of sequentially connected devices of an electromagnetic valve, an idle valve, made with an adjustable idle channel screw and with a working diaphragm, an accelerator gearbox with an eccentric engine idle switch, fuel pump made with a pressure reducing valve.

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