Oxygen content exhaust gas sensor, and method of its manufacture

Details Oxygen content exhaust gas sensor, and method of its manufacture Oxygen content exhaust gas sensor, and method of its manufacture

1980-03-25

1982-08-31

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

4271262, G01N 2758

Patent

active

043471137

ABSTRACT:
To improve operation and output voltage, particularly at 400.degree. C. and less, an oxygen sensor, especially adapted to determine oxygen content of automotive exhaust gases, is constructed by utilizing two electrodes applied on a body of stabilized zirconium dioxide, for example a closed tube, by making an electrode exposed to the exhaust gases in form of a mixture of finely dispersed ceramic material and a platinum-rhodium alloy, the ceramic material being present at about 40% (by volume) and 60% (by volume) platinum-rhodium alloy of 50-94% platinum and 50-6% rhodium (by weight). The second electrode, exposed to a reference gas comprises an alloy of palladium and another noble metal in a ratio of about 19-90% (by weight) Pd and 81-10% (by weight) noble metal. This electrode may also contain up to 40% (by volume) finely dispersed ceramic material. The electrode exposed to the exhaust gases is covered with a porous coating. The electrodes can be applied as aqueous or organic solutions of soluble noble metal compounds or suspensions, colloidal suspensions, with organic solvents, and the like, and subsequent sintering.

REFERENCES:
patent: 3843400 (1974-10-01), Radford et al.
patent: 3978006 (1976-08-01), Topp et al.
patent: 4199425 (1980-04-01), Sinkevitch

Affiliated with

Also associated with

Rating

Oxygen content exhaust gas sensor, and method of its manufacture 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 content exhaust gas sensor, and method of its manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen content exhaust gas sensor, and method of its manufacture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2183410