Abstract: A spark detector indicates the presence of a spark by analyzing sound waves generated when an electrical spark is produced from an electrical spark generator located on an igniter rod. The spark detector includes an acoustic sensor that is in communication with the igniter rod to determine the time for the spark sound wave to travel through the igniter rod to the acoustic sensor. If a spark is not detected, the spark detector may output a signal indicating at least one of (i) the spark was not detected, (ii) to replace the electrical spark generator immediately, or (iii) replace the electrical spark generator soon such as at the next scheduled maintenance. Furthermore, the spark detector may be calibrated based on current temperature of the igniter rod based upon time of propagation of a pulse sound wave, generated by a pulse-echo generator, to reflect off an end of the igniter rod.

Abstract: An apparatus and method are provided for improved gas pilot burners, which are capable of simultaneous flame ignition and flame detection. More particularly, the invention provides for an apparatus and method capable of simultaneous high-energy ignition and flame ionization detection in a high-energy igniter that utilizes a spark rod located in a fuel channel.

Abstract: An apparatus and method are provided for improved gas pilot burners, which are capable of simultaneous flame ignition and flame detection. More particularly, the invention provides for an apparatus and method capable of simultaneous high-energy ignition and flame ionization detection in a high-energy igniter that utilizes a spark rod located in a fuel channel.

Abstract: An apparatus and method are provided for improved gas pilot burners, which are capable of simultaneous flame ignition and flame detection. More particularly, the invention provides for an apparatus and method capable of simultaneous high-energy ignition and flame ionization detection in a high-energy igniter that utilizes a spark rod located in a fuel channel.

Abstract: The disclosure pertains to ignition systems and more particularly to spark igniters for burners and burner pilots. The spark igniter provided, is configured such that an electric field concentration between two electrodes increases while keeping output voltage unchanged.

Abstract: The invention pertains to ignition systems and more particularly to spark igniters for burners and burner pilots. A spark igniter is provide, which is configured so that the spark gap is on the outer side surface of the spark igniter.