Exhaust gas sensor for detecting a gas component in the exhaust gas of an internal combustion engine and method for operating an exhaust gas sensor

摘要

An exhaust gas sensor (1) for detecting a gas component in the exhaust gas of an internal combustion engine, comprising a control and evaluation unit and a sensor unit (2) having an electrode structure (20) with a first connection (4) and a second connection (5), is proposed , Further, a method for operating an exhaust gas sensor (1) for determining the concentration of a gas component in the exhaust gas of an internal combustion engine is proposed, wherein the exhaust gas sensor (1) has a gas-sensitive sensor unit (2) with an electrode structure (20) with a first terminal (4) and with a second connection (5). DOLLAR A According to the invention, the control and evaluation unit applies a bias voltage (17) to the first terminal (4) and / or the second terminal (5) of the electrode structure (20), wherein the height of the bias voltage (17) in dependence on a Sensor characteristic and / or in response to a sensor load is adjustable. For the method it is provided that a bias voltage (17) is applied to the first terminal (4) and / or to the second terminal (5) of the electrode structure (20), the height of the bias voltage (17) being dependent on a sensor characteristic and / or adjusted as a function of a sensor load.