The aviation igniter spark energy is an important parameter to the reliable firing, conveying and combustion. This system use “oscillograph test method” to measure the discharge current and voltage simultaneously and efficiency without affecting the system’s working condition. In the course of practical test, the value is distorted resulting from the EMI (the transient voltage 3～4KV,current 13KA) which generated by the ignition system. Through the research from the source of interference, the interference path, the interfered equipment three aspects and practice of the EMC of the system, proposed a series of effective measures to improve the EMC ability of the system. The research is worthwhile to resolve the system’s EMC ability which is under powerfull electromagnetic interference.
