SU366319A1 - - Google Patents

Description

DEVICE FOR CONTROL OF IGNITION OF FUEL

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The invention relates to the automatic control of the supply of fuel to the combustion chambers, namely to devices for controlling the transfer of fuel.

Devices for controlling fuel ignition are known, comprising a flame dagger connected to a flame control unit, a fuel supply valve and an igniter.

The proposed device differs from those known in that a spark sensor connected to the igniter is connected to the flame control and clapaia control unit when the spark control unit P01 is used.

This makes it possible to increase reliability and prevent premature fuel supply to the combustion chamber.

The drawing is a diagram of the proposed device.

The starting device / generates the starting km pulse of a certain duration. The high voltage source 2 is a variable voltage generator, for example, the Tine generator of Roeger, the output of which transforms a high voltage | e. The igniter 3 serves to spark a fuel ignition. The spark sensor 4 is adapted to the high voltage source 2 of the XC circuit and serves to monitor the spark on the igniter 6. The RC-iKOHTypa of sensor 4 is matched to the high voltage source 2 to stop the supply of high voltage at. shunting the spark gap soprot: vlepiy less than 100 com.

This may occur during coking of the igniter, breakdown of the high voltage cable, etc. The spark control unit 5, which represents the logic circuit, controls the salt valve 6, which serves to feed the toner into the combustion chamber. Ionization sensor 7 is designed to signal the presence of a torch. Flame control unit 8 monitors the presence of a torch and connects to input 9, and spark sensor 4 is connected to input 10.

The solenoid valve is connected to the output of the node // control of the spark, which through the amplifier 12 is connected to the output of the logic

element 13 "OR. Each of the two inputs of the OR gate is connected to the outputs of the two circuits 14 and 15 coincidence. In the first circuit 14 of the match, one input gets sippal from the threshold element 16, which

connected to a spark sensor 4 connected to input 9. Simultaneously, the threshold element 16 receives a signal through the delay element 17 to the logic element 18 “MEMORY fixing the presence of a spark. The second input of the condominium 14 is connected to

output of the logic element / 5 "MEMORY, fixing the initial state of the device". The second input 9 of the spark control unit 5, which receives the signal from the flame monitoring unit 8, is connected to the first input of the coincidence circuit 15. The other input of the match 15 circuit is connected to the output of the logic element 18, which is also connected to one of the three inputs of the 20 "BAN. The output of the coincidence circuit 15 through the delay element 21 is connected to the input of logic element 19, ensuring its transition from the initial state AND: issuing a command to another input of the element 20 "BAN. Input 10 through the inverter 22 is connected to the third input of the element 10, the output of which is connected to the inputs "RESET elements 18 and 19.

The starter 1 receives the command pulses from the source 2 of the high voltage, which begins to generate oscillations. A high voltage is applied to the igniter 3, a spark is generated, and a current flows through the spark sensor 4. From the sensor of the spark signal nocrynaieT to the input 10 of the block 5 control the spark. If there is a spark on the igniter 3, then threshold element 16 is accumulated, and the signal through elements 14 and 13 is fed to amplifier 12. The latter turns on solenoid valve 6 and fuel is fed into the combustion chamber. The fuel is ignited, and the light sensor 7 is fed to the flame control unit 8. The latter is triggered and the starting device 1 turns off the high-voltage source 2, simultaneously giving a signal about the presence of flame to the input 9 of the node 5 controlling the spark.

Simultaneously with the switching off of the solenoid valve 6, the threshold element 16 receives a pulse to the delay element 17 and through it acts on the element 18 “MEMORY. The latter is triggered, and from the zero output a negative signal is fed to the circuit of 15 conjugation 5 | in element 20 "BAN. With

when the signal arrives at input 9, the latter now passes through a coincidence circuit 15, element 13 "OR, amplifier 12, and keeps the solenoid valve 6 in the open state only during the time the flame is present. The sigpal four element delay 22 arrives at the element 19 "MEMORY. The latter triggers and sends a signal to the element 20 "BANNER, and also removes the enabling signal from the coincidence circuit 14, eliminating the possibility of passing the control signals from input 10. When the signal at input 9 stops, the absence of a flame indicates that the inverter 22 is triggered and returns items 18 and 19 of the MEMORY to its original position. This time the solenoid valve 6 is closed, since at the output: the amplifier 12 will not have a command signal. Spark block 5 control circuit

ready for the new, mo launch. If the ignition of the fuel has not occurred, then the signal from the node 8 of the flame control unit to the input 9 of the spark control unit 5 is not received. In this case, the salt-like klanap 6 is automatically switched off at the end of the starting or pulse. IF there is no ignition spark in the igniter 3, then the spark control unit 5 will not open the solenoid clanan 6. The high-voltage source 2 is turned off

PYU about ki hI HI p ukavavogo and many others.

Subject invention

A device for controlling ignition of a fuel, comprising a flame sensor connected to a flame control unit, a fuel supply valve and an igniter, characterized in that, in order to increase reliability and prevent premature fuel supply to the combustion chamber, a spark sensor connected with a block is connected to the igniter. control of the spark, made by logic elements, to the flame control unit and the valve.

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