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AssigneeRobert Bosch GmbH
InventorsKlaus Muller, Ernst Linder, Helmut Mauer, Karl-Hermann Friese, Franz Rieger, Heinz Geier
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To facilitate mass production and permit ready introduction of a substance which provides an oxygen partial pressure reference level, for example the oxygen in ambient air, an elongated plane flat plate-like solid electrolyte body is provided with electrodes thereon, and one of the electrodes is covered by a trough-like cover element to form the reference electrode, the space beneath the trough-like element and the electrode itself being available for the substance which may, but need not be, the oxygen of air, and may be a solid material providing a reference oxygen partial pressure level. The cover plate may, itself, be made of solid electrolyte material and may form a portion of another sensing element, so that a plurality of sensing elements can be superimposed in sandwich-like fashion. A heater element can be applied to a flat plate element of the assembly where desired. The sensors can operate in the potentiometric or polarographic mode.
Electrochemical sensor, particularly for determination of oxygen content in combustion gases, especially from an internal combustion engine, having
Dependencies are inferred from the claim text.