| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact oxygen sensor having excellent gas responsiveness, capable of being rapidly heated up v.i. and presenting excellent strength even in the case of repeated rapid heating up. <P>SOLUTION: In the oxygen sensor having a measuring electrode 5 at an outer surface near a tip end of a long-length zirconia solid electrolyte board 3 having an air introduction hole for introducing air and a detection part equipped with a reference electrode 4 on a wall face of inside air introduction hole 3a for facing against the measuring electrode 5, sensor width w in an orthogonal direction to a longitudinal direction of the detection part 1 is from 2.0 to 3.5mm and ratio Vo/Vp of section area Vo of the air introduction hole 3a occupying in entire section area Vp of the entire sensor in an orthogonal direction of the longitudinal direction of the detection part 1 is in a range from 0.008 to 0.25. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
