Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1994-09-21
1996-02-20
Bell, Bruce F.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204426, 204428, 204424, G01N 2726
Patent
active
054926122
ABSTRACT:
The invention includes the use of a pre-equilibration zone on an exhaust gas sensor to provide catalytic site to catalyze non-reacted components of the exhaust gas prior to the gas sample reaching the sensor's outer electrode. The pre-equilibration zone preferably includes a precious metal on the surface of a porous carrier. The invention also includes a method of making an exhaust sensor including a pre-equilibration zone, and a method of sampling an exhaust gas by passing the same through a pre-equilibration zone.
REFERENCES:
patent: 3935089 (1976-01-01), Togawa et al.
patent: 4199425 (1980-04-01), Sinkevitch
patent: 4240890 (1980-12-01), Watanabe et al.
patent: 4249156 (1981-02-01), Micheli
patent: 4279782 (1981-07-01), Chapman et al.
patent: 4307061 (1981-12-01), Sarholz
patent: 4318828 (1982-03-01), Chapman
patent: 4331631 (1982-05-01), Chapman et al.
patent: 4382323 (1983-05-01), Chapman et al.
patent: 4394301 (1983-07-01), Gardner
patent: 4507397 (1985-03-01), Buss
patent: 4552739 (1985-11-01), Kuhl
patent: 4704494 (1987-11-01), Inui
patent: 4832824 (1989-05-01), Vaughan et al.
patent: 4863583 (1989-09-01), Kurachi et al.
patent: 4888105 (1989-12-01), Huss, Jr. et al.
patent: 4950828 (1990-08-01), Shum
patent: 5077970 (1992-01-01), Hamburg
patent: 5083427 (1992-01-01), Anderson
patent: 5160598 (1992-11-01), Sawada et al.
patent: 5169513 (1992-12-01), Mase et al.
J. E. Anderson et al., "Mass transfer effects on ZrO.sub.2 oxygen concentration cells exposed to non-equilibrium H.sub.2 -O.sub.2 mixture"--Journal of Applied Electrochemistry 12 (1982) 463-467.
Keiichi Saji et al., "Voltage step characteristics of oxygen concentration cell sensors for nonequilibrium gas mixtures"--Toyota Central Research and Development Laboratories, Inc., Nagakute-cho, Aichi-gun, Aichi, 480-11 Japan, vol. 135, No. 7; pp. 1686-1691.
A. D. Colvin et al, "Catalytic effects on ZrO.sub.2 oxygen sensors exposed to non-equilibrium gas mixtures"--J. Electroanal. Chem., 136 (1982) 179-183.
L. Eltinge, "Fuel-Air Ratio and Distribution from Exhaust Gas Composition", SAE Paper 680114, pp. 425-450.
G. Baier et al, "Non-Nernstian Zirconia Sensors for Combusion Control", Appl. Phys. A57, 51-56 (1993).
J. E. Anderson et al, "Steady-State Characteristics of Oxygen Concentration Cell Sensors Subjected to Nonequilibrium Gas Mixtures", J. Electrochem. Soc., vol. 128, No. 2, Feb. 1981, pp. 294-300.
Kennard III Frederick L.
Valdes Carlos A.
Bell Bruce F.
Brooks Cary W.
General Motors Corporation
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