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Brevet Année : 2018

Nox sensor with catalytic filter and polarisation

Capteur NOx à filtre catalytique et polarisation

Résumé

The invention relates to an NOx gas sensor which is intended for being arranged in a stream of gas of an exhaust device of a heat engine. The sensor includes a sensing element comprising a solid electrolyte having a first surface over which a work electrode, a reference electrode and a counter electrode extend. The work electrode is made of a material which has lower electrocatalytic and catalytic activity than the material of the reference electrode and the counter electrode, and the sensor includes a catalytic filter surrounding the sensing element and means for negatively polarising the work electrode. The invention also presents a detection device including a plurality of sensors of this type, and a corresponding catalytic exhaust device.

Mots clés

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Dates et versions

hal-01812629 , version 1 (11-06-2018)

Identifiants

  • HAL Id : hal-01812629 , version 1

Citer

Jean-Paul Viricelle, Philippe Vernoux, Christophe Pijolat, Philippe Breuil. Nox sensor with catalytic filter and polarisation. France, Patent n° : FR20150055600 20150618 ; WO2016EP64046 20160617. JP Viricelle FR20150055600. 2018. ⟨hal-01812629⟩
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