An engine control apparatus can significantly improve {TAIL ~ reliability} in misfire detection by preventing erroneous detection of the level of an ion current due to {HEAD ~ noise superposition} 
An engine control apparatus can significantly improve { TAIL ~ reliability } in misfire detection by preventing erroneous detection of the level of an ion current due to { HEAD ~ noise superposition }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD