SU1698476A2 - Electronic magneto for i c carburetor engine - Google Patents

Abstract

The invention allows to increase the fuel efficiency of the engine, to improve the conditions of combustion of fuel, to reduce the toxicity of exhaust gases. A rheostat 11 is inserted into the electron magneto between resistor 10 and inductance coil 9, the slider of which is kinematically connected to the throttle valve of the carburetor with the possibility of its displacement depending on the position of the latter01 silt.

Description

This invention relates to an ignition system for internal combustion engines.

By AvtoSv, I 647455 known electronic magneto, containing a magnetoelectric generator with primary and secondary windings, sensors on the burner, electronic switch, resistor and inductance coil.

However, this electronic magneto does not provide a relationship between the ignition advance angle and the carburetor throttle opening angle.

The aim of the invention is to increase the efficiency of the magneto operation by providing a connection between the ignition time and the throttle opening angle

The goal is achieved by the fact that in an electronic magneto containing a magnetoelectric generator, sensors on a reed switch, an electronic switch, a resistor and an inductor, a new one is that a rheostat is inserted between the resistor and the inductance, and its slider is kinematically connected to the throttle valve of the carburetor .

The drawing shows an electronic magneto.

The electronic magneto includes a magnetoelectric generator 1 with a rotating magnet 2, the stator of which contains primary 3 and secondary 4 windings. Parallel to the primary winding 3, the emitter – collector sections of transistors 5 and 6 of different types of conductivity are connected, to the bases of which are fixed contacts of the reed switch 7 controlled by an additional permanent magnet 8, inductance 9 and resistor 10

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A resostat 11 is connected to the magneto and connected in series with the inductance coil 9 and a resistor 10, the slider of which is kinematically connected to the throttle valve of the carburetor.

Electronic magneto works as follows.

As the permanent magnet 2 rotates in the primary winding 3, an alternating voltage of approximately sinusoidal form is induced. When negative half-voltage with respect to mass is induced in winding 3, transistor 6 is opened, since contacts 12 and 13 of the reed switch 7 are closed at that time. The primary circuit current will flow through the open transistor 6 and the primary winding 3. How only the current of the primary circuit reaches a maximum, and this will occur at a certain position of the permanent magnet 8, the contact 13 of the reed switch 7 will switch, as the elastic force of the contact will exceed the total force of the magnetic fields of the inductor 9 and constant nit 2. As a result, contacts 12 and 13 razomknuts and the contacts 13 and 14 zamknuts. In this case, the current will not flow along the base circuit of transistor 6 and it will close. The current in the Primary Magneto Circuit disappears, and a high voltage is induced in the secondary circuit, which is supplied to the candles by the distributor

The transistor 5 remains open, since at its base there is a positive potential relative to the base.

When a positive half-wave voltage occurs in the primary winding 3, the transistor 5 opens and a current flows in the winding 3, which is interrupted when the maximum is reached. The current interruption is determined by the position of the magnet 8 and the magnitude of the current in coil 9.

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With an increase in the frequency of rotation of the magnet 2, the front of the current rise becomes steeper, the amplitude increases, which causes a weakening of the field of the magnet 2 acting on the reed switch 7, with decreasing frequency the reverse process occurs.

When the angle of opening of the carburetor throttle is changed, the resistance of the kinematically connected rheostat 11 associated with it changes, changing, respectively, the amount of current flowing through the inductance 9, which causes a change in the magnitude of the magnetic field acting on the reed switch

Thus, the moment of switching the contacts of the reed switch 7 is automatically corrected depending on the frequency of rotation of the engine crankshaft and the angle of opening of the throttle valve. Carburetor

The electronic magneto of the proposed design will increase the fuel efficiency of the engine, improve the completeness of combustion of fuel, thereby reducing the toxicity of exhaust gases.

Claims (1)

Invention Formula Electronic magneto for carburetor internal combustion engine according to the auto St. No. 647455, which is based on the fact that, in order to increase efficiency by forming the ignition advance angle taking into account the load, the magneto is equipped with an adjustable resistor in the form of a rheostat installed in the ignition pulse torque shaping circuit between the variable resistor and an inductance coil, the slider of the adjustable resistor is kinematically connected with the ЈЈ ° csolning carburetor damper with the possibility of its movement depending on the position of the latter.