[0001] The invention relates to the energetics and may be used in the systems of ignation
and control of the process of burning-up the fuel mixtures, in particularly, in the
internal combustion engines.
It is known the methods of burning-up the fuel mixture wherein its inflamation is
effected by feeding the high-frequency pulses to the electrodes, connected to the
secondary winding of the ignition coil.
It is known also the system of ignition providing for forming the high-frequency voltage
pulses in the interelectrode gap, comprising the current source, ignition coil, electronic
switch, connected with the primary winding of the ignition coil, pulse generator,
output thereof is connected with the electronic switch, and at least one sparking
plug.
[0002] The drawback of the above mentioned methods and device is that they don't provide
for sufficient complete combustion of fuel and decrease of toxicity level of combustion
products, because at the forming of the high-frequency pulses of ignition the changes
of the parameters of the fuel mixture in the process of its burning-up are not taken
into account.
The object of the invention is the improvement of the effectiveness of the combustion
process and completeness of fuel burning-up and decrease of the toxicity of the combustion
products.
[0003] The object is achieved by the method of burning-up the fuel mixture, wherein its
inflamation by feeding the high frequency voltage pulses to the electrodes, connected
to the secondary winding of voltage, and in the process of burning-up the air fuel
mixture the frequency of voltage pulses is altered in relation to the breakdown voltage
of the burning fuel mixture.
The shaper of the feedback signal, input thereof is connected with the point of connection
of the ignition coil with the electronic switch and output is connected with the second
input of pulse generator is introduced into the ignition system of the embodyment
of this method, comprising current source, ignition coil, electronic switch, connected
with the primary winding of the ignition coil, pulse generator, output thereof is
connected with the electronic switch, and, at least, one sparking plug.
[0004] The figure presents the functioning scheme of the ignition system for embodyment
of the suggested method of burning-up the air fuel mixture.
[0005] Ignition system comprises current source 1, ignition coil 2, electronic switch 3,
connected with the primary winding of the ignition coil 2, pulse generator 4, the
output thereof is connected with the electronic switch 3, shaper of the ignition moment
5, connected with the first input of the pulse generator 4, shaper of the feedback
signal 6, input thereof is connected with the point of connection of coil ignition
2 with electronic switch 3 and output is connected with the second input of pulse
generator 4 and sparking plug 7, connected with the secondary winding of thr ignition
coil 2. The shaper of the feedback signal is made up, for instance, as serially connected
resistor and condenser.
[0006] The system of ignition operates as follows:
The shaper of the ignition moment 5 synchronously to the frequency of the drive shaft
rotation (is not shown in the figure) starts up the pulse generator for a period of
time inversely proportional to the speed of the drive shaft rotation. Pulse generator
4 formates pulses putting into action the electronic switch 3 commutating the electric
current in the primary winding of the ignition coil 2 with the frequency of pulse
sequency as a result pulses of high voltage are induced in the secondary circuit of
the ignition coil, providing for electrical discharges between electrodes of the sparking
plug.
As a result of interaction of plasma of the burning fuel with electromagnetic field
in the vicinity of the electrodes of the sparking plug, frequency parameters of the
secondary circuit of the ignition coil are changed, that, in its turn, causes the
current alteration in the secondary and primary windings of the ignition coil.
[0007] The current value causes by the alterations of the parameters of the burning environment
in the vicinity of the electrodes of the sparking plug is transformed in the shaper
of the feedback signal 6 into control signal, adjusting the pulse frequency, generated
by the pulse generator 4, and, consequently, the frequency of the electrical discharges
on the sparking plug 7. Owing to the suggested method it is provided the automatic
control of the process of ignition the air- fuel mixture, its stable burning and optimization
of the rates of chemical reactions, that promotes the efectiveness of the burning-up
processes and completness of the burning-up and reduction of toxicity of the combustion
products.
1. Method of burning-up the fuel mixture wherein its inflamation by feeding electromagnetic
pulses into the fuel mixture is characterized in that the pulses frequency is altered
relating to the breakdown voltage of the fuel mixture.
2. System of ignition comprising the source of current (1), ignition coil (2), electronic
switch (3) connected with the primary ignition coil, pulse generator (4), imput thereof
is connected with the electronic switch (3) and, at least, one sparking plug (7) ,
connected with the secondary ignition coil, is characterized in that the shaper of
the feedback signal (6) is incorporated into it, input thereof is connected with the
point of connection of the ignition coil (2) with the electronic switch (3) and output
is connected with the second input of the pulse generator (4).
