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