Mathematical Problems in Engineering / 2013 / Article / Tab 2

Research Article

Simultaneous-Fault Diagnosis of Automotive Engine Ignition Systems Using Prior Domain Knowledge and Relevance Vector Machine

Table 2

Sample possible simultaneous faults of engine trouble reflected by ignition patterns.

Case numberSymptom or possible cause

1High resistance in secondary circuit and misfire due to extremely lean mixture
2Narrow spark-plug gap and carbon fouled in spark plug
3Partially broken spark-plug cable and wide spark-plug gap
4High resistance in secondary circuit cable and narrow spark-plug gap and rich mixture
5Partially broken spark-plug cable and engine knock and wide spark-plug gap