PT99334A - Electronic oscillator circuit for internal-combustion engines - Google Patents

Abstract

This equipment has the advantage of reducing contaminant gases and better utilizing the energy consumed. It is composed of an oscillator and power circuit composed of two transistors and a time constant which maintains the ignition coil, producing new sparks for each cylinder and during the stroke of the piston in its active phase. The power transistor T2 controls while the transistor T1 is polarized by means of the closing of the rotor (Fig. 3) or the transistor T3 controls when the earth circuit is interrupted, producing an inverse wave which polarizes the transistor T1, the cycle being repeated. Fig. 1. <IMAGE>

Description

The present invention relates to an electronic oscillator circuit for the ignition of gasoline engines and which has been specially designed to increase the efficiency of the engine with a lower consumption and considerably reducing the toxic gases that are released and a imperfect combustion.

As is well known, in gasoline engines the ignition is produced by a spark that jumps through the spark plug inside the explosion chamber.

In this regard, the solutions known so far are based on a high voltage coil whose primary is powered by the battery's direct current (12 volts). The electrical contact is cut off or interrupted by so-called generally platinum contacts installed within a device called a distributor, these being a current of 4 Amps.

This current cut-off is produced in synchronization with the critical moment of the maximum compression of each cylinder, so that an overvoltage (rupture current) is produced, which when induced in the secondary winding of the coil produces a high voltage current, which through the dispenser (pipe and lid), is led to the candles producing inflammation of the compressed mixture inside the chamber 3

L of each cylinder at the time of the corresponding cycle.

With this type of ignition, the ignition of the compressed mixture takes place instantaneously in about 28.8% of its totality, initiating a flame front that propagates inside the cylinder chamber, creating turbulences of gas rich in hydrocarbons that do not they fully ignite before the opening of the exhaust valve, exiting through the exhaust pipe.

In order to partially obviate these drawbacks, high voltage coils with higher primary consumption (7 Amperes) and more secondary voltage appeared on the market. The spark that is produced has more duration being, therefore, more intense the front of flame, increasing in 1% the gases burned.

As the consumption that will support the rotor and the platinates is greater, these deteriorate quickly.

To remedy this drawback, the first electronic ignition appears incorporating a power transistor to effect current rupturing of the coil driven at its base by conventional platins, but with a large decrease of the operating intensity.

At present, several engine manufacturers are replacing the platinum rotor with some inductors or coils located inside the manifold (as many as the cylinders), which in the presence of a rotating magnet generate a pulse that controls the base of a power transistor that by its turn the primary coil.

In all cases mentioned above, only a spark is blown into the cylinder chamber. The electronic oscillator circuit object of the present invention solves to a large extent the current problems of atmospheric contamination and energy saving (fuel) and is based on the creation of several consecutive flame fronts, that at the same time (piston stroke) , ignites the compressed mixture nine times, because nine sparks are produced followed in each candle, accompanying the piston in its working period in 3/4 parts of its route and igniting up to 63.2% of the accumulated mixture, against the 28, 8% which are ignited with a single discharge or spark from the remaining ignitions.

In principle and in examining the previous paragraph, it seems to be apparent that if a candle throws a single

of 20,000 kms, launching nine will last much less.

However, after the tests carried out, we see that the exact opposite happens because they last more than 50,000 km.

When analyzing the electrodes of a candle, it is found that the part of the shell that results from the oxidation of the material itself of the electrodes which, being heated by the effect of the previous explosion, come into contact with the turbulences of rich gases in hydrocarbons, a chemical reaction takes place whereby it is converted into oxide.

In the present case, this phenomenon does not occur, because when the gases come into contact with the electrode, they find a new spark in the latter and ignite without giving rise to the reaction mentioned. It should be noted that a higher combustion increases the efficiency of the engine and a lower amount of fuel is required to maintain the same efficiency.

In this way, solid wastes (coal residues) and gaseous (carbon monoxide, sulfur, etc.) leaving the exhaust are much smaller and can be said to decrease by about 50% under more unfavorable conditions compared to detected on any other type of ignition.

DESCRIPTION OF THE DRAWINGS

To complete the description and in order to provide a better understanding of the features of the invention, the present description is accompanied by and forming an integral part of a scheme in which the electronic circuit of the present invention has been represented by way of non-limiting illustration.

PREFERRED EMBODIMENT OF THE INVENTION

When actuating the contact switch we have current in the circuit and when starting to rotate the motor and at a certain moment, the rotor closing (platinates) (FIG 3) or (electromagnetic rotor impulse) will take place (FIG 2 ) which causes the direct bias of the transistor T1, then a voltage of 12 Volts appears in the collector C of this transistor, thereby polarizing the base B and the transistor E of the transistor T2, which gives rise to the supply of the primary winding of the High coil.

At the same time, in the collector C of the transistor T2, an inverse damped oscillation is transmitted which is transmitted by the capacitor (C1) and by the resistance (Rl) (time constant) reaching the base B of the transistor T1, a new cycle is then repeated, which will be repeated a number of times, in this case nine times, during the time interval in which the platens remain open or, in the case of the electromagnetic rotor, the non-conduction time of Transistor T3.

When the platens are closed by the rotor, the oscillator is blocked and then polarized directly with the Transistor T1. It is not considered necessary to extend this description further so that any person skilled in the art will understand the scope of the invention and the advantages thereof.

The materials, components, shape, size and arrangement of the elements are susceptible to variation as long as such alteration does not imply the essence of the invention.

The terms of this description should always be taken in a broad, non-limiting sense.

Claims (5)

- 8 - 12. An electronic oscillator circuit for internal combustion engines, characterized in that it is essentially constituted by a power transistor which controls the ignition coil. An electronic oscillator circuit for internal combustion engines, according to claim 1, characterized in that for incorporating an oscillator transistor, it is set by a time constant composed of a capacitor and a resistor for the actuation of the power transistor. 32. An electronic oscillator circuit for internal combustion engines according to claims 1 and 2, characterized in that the polarization of the oscillator transistor benefits from a reverse oscillation phenomenon produced by the residual current of the overcurrent of the primary of the high voltage coil . 42. An electronic oscillator circuit for internal combustion engines according to claims 1 to 3, characterized in that it can operate with the conventional (platinum) rotor or the electromagnetic circuit Η 9 currently incorporated by many manufacturers. LISBON, OCTOBER 24, 1991