METHOD FOR CONTROLLING CAPACITIVE IGNITION SYSTEM OF AIRCRAFT ENGINES Russian patent published in 2021 - IPC F02P17/12 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to capacitive ignition systems for monitoring their technical condition during and between engine starts. A method for monitoring the capacitive ignition system of aircraft engines is proposed, in which the time interval between successive pulses of the discharge current of the storage capacitor per spark plug is measured, the performance of the ignition system is judged by the time interval exceeding the set value, starting from the time of the supply voltage supply, the initial pulse of the control signal is formed with a duration equal to the control value of the time interval corresponding to the minimum established frequency of neoplasm on the spark plug, if there is an initial pulse of the monitoring signal with a duration equal to the control value of the time interval, the performance of the built-in monitoring system is judged. If the time interval between successive discharge current pulses is less than the specified reference value, a continuous monitoring signal is generated and the ignition system is judged to be operational. If the time interval between successive discharge current pulses of the specified reference value is exceeded, the built-in monitoring system generates monitoring signal pulses with a frequency equal to the actual frequency of generation of discharge current pulses by the ignition system. If there is an initial pulse of the control signal with a duration equal to the control value of the time interval, compliance with the values of the supply voltage, resistance of the power supply circuits, and others set for the engine is checked, and a decision to continue operating the ignition system is made. In the absence of generation of discharge current pulses by the ignition unit and the presence of an initial pulse of the control signal with duration equal to the control value of the time interval, the failure of the ignition unit is judged.

EFFECT: increased reliability and depth of monitoring the technical condition of the ignition system elements, providing a high degree of reliability in the shortest possible time to check their performance.

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