| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oxygen sensor control device configured to accurately calibrate relationship between output characteristics of an oxygen sensor and oxygen concentration. <P>SOLUTION: A CPU 2 of the oxygen sensor control device 10 determines and stores a peak value of an average output value Ipav in a RAM 4, while calculating the average output value Ipav averaged based on a residual value except for a value deviated from a predetermined first range R1 among a plurality of output corresponding values (a concentration corresponding value) Ipr of the oxygen sensor 20 when an air scavenging quantity (the total supply quantity of the atmosphere) becomes a predetermined quantity or more per one fuel cut of an internal combustion engine 100. The CPU 2 performs weighted average of a peak value of the average output value Ipav to be obtained every multiple fuel cuts when the number of F/Cs is 16 or more, and calculates a plurality of average output values Ipavf by performing arithmetic average when the number of F/Cs is less than 16, and determines a correction factor for correcting an actual output value Ip of the oxygen sensor 20 on the basis of the plurality of average output values and a preset reference output value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
