Exhaust gas sensor having porous, metal-impregnated ceramic...

Details Exhaust gas sensor having porous, metal-impregnated ceramic... Exhaust gas sensor having porous, metal-impregnated ceramic...

G - Physics

01

N

324/25, 73/69

G01N 31/00 (2006.01) G01N 27/12 (2006.01) G01N 27/26 (2006.01) H01C 7/04 (2006.01)

Patent

CA 1134442

28 ABSTRACT OF THE DISCLOSURE An improved sensor having a ceramic element that undergoes a change in an electrical characteristic in response to a change in the partial pressure of oxygen in a mixture of gases to which the ceramic element is exposed. Sensors of this type are used to detect the air/fuel ratio of mixtures supplied to internal combustion engines. Prior art sensors are characterized by little change in their respective elec- trical characteristics at low operating temperatures. A charge transfer meaterial, platinum or platinum/rhodium is applied to the ceramic element to facilitate or make possible the electron transfers required for sensor operation at low temperatures. Platinum/rhodium alloy is the currently preferred charge transfer material. This alloy, which pre- ferably is 90% platinum and 10% rhodium, reduces the minimum temperature of operation for the sensor as taught herein, and it also substantially eliminates vaporization loss of the charge transfer material.

344061

Affiliated with

Also associated with

Rating

Exhaust gas sensor having porous, metal-impregnated ceramic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exhaust gas sensor having porous, metal-impregnated ceramic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas sensor having porous, metal-impregnated ceramic... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-311914