Oxygen sensor

Details Oxygen sensor Oxygen sensor

G - Physics

01

N

G01N 27/407 (2006.01) F01N 3/20 (2006.01) F01N 9/00 (2006.01) G01N 27/409 (2006.01)

Patent

CA 2260341

An oxygen sensor is disposed behind an exhaust gas purifying catalyst for an internal combustion engine and which suppresses the influence of unburnt hydrocarbon on the output voltage. A sensor element 1 is provided with a detection electrode 4 on the outer face of a zirconia ceramic body 2, a reference electrode 3 on the inner face of the ceramic body 2 and a spinel protective layer 5 on the outer surface of the detection electrode 4. The tip end of the sensor element 1 is covered with a protective cover 10 which is provided with an outer partition wall 11 having through holes 11a and an inner partition wall 12 having through holes 12a. In a case where the pressure difference between the inside and outside of the protective cover 10 is .DELTA.P(atm) when the atmospheric air with a volume flow rate Q(1/min) is passed into the protective cover 10 from the outside, the ratio .DELTA.P/Q2 is 3.2×10 -5(atm.cndot.min2.cndot.1 -2). When the surface temperature of the sensor element 1 is changed in a range of sensor active temperature, the reversing time is substantially constant. Therefore, the catalyst deterioration can be detected by the oxygen sensor with high accuracy.

Affiliated with

Also associated with

Rating

Oxygen sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Oxygen sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1811421