Electrochemical sensor for trace gases in a fluid-mixture, and regulation system of the air-fuel ratio in an air-fuel mixture using such a sensor

Abstract

Abstract Electrochemical sensor for the concentrations of species in a fluid mixture comprising a measuring cell of the type having a partial pressure internal reference electrode incorporating a catalysis region in which the gaseous mixture is brought into thermodynamic equilibrium and functioning according to the so-called "assay" process, so that only a small quantity of the gaseous mixture to be analyzed is admitted into the sensor. It also comprises a supplementary cell functioning as an ionic pump, so as to continuously modify the composition of the gaseous mixture admitted into the sensor under the control of a regulatable electric current.

Inventors

• 👤 Michel Croset
• 👤 Noel Nouailles
• 👤 Joel Perret
• 👤 Jean-Philippe Schnell
• 👤 Gonzalo Velasco

Bibliographic Details