| Patent application number | Description | Published |
|---|
| 20090301877 | Gas Sensor - A gas sensor for sensing the gas concentration in a measured gas mixture, particularly of a nitrogen compound, having a solid electrolyte which connects a first and a second electrode in an ion-conducting manner, the first electrode having a high activity with respect to oxidation or reduction of the gas component that is to be sensed, and the second electrode having a slight activity in this regard. The influence on the activity with regard to oxidation or reduction of the gas component to be determined, due to free oxygen present in the measured gas mixture, is approximately equally strongly pronounced at both electrodes. | 12-10-2009 |
| 20090308747 | AMMONIA SENSOR - A gas sensor, particularly an ammonia sensor, having a first sensor cell that is made up of a solid electrolyte, a first measuring electrode that is to be exposed to the measuring gas and a second measuring electrode. In order to reduce an NO | 12-17-2009 |
| 20100162790 | SENSOR ELEMENT FOR DETERMINING THE CONCENTRATION OF AN OXIDIZABLE GAS COMPONENT IN A MEASURING GAS - A sensor element is provided for a gas sensor for determining the concentration of an oxidizable gas component, especially ammonia, in a measuring gas, in particular in the exhaust gas of an internal combustion engine, the sensor element having at least one measuring electrode acted upon by the measuring gas. To eliminate the sensitivity of the sensor element with respect to nitrogen oxides, measuring-gas volumes acting on the measuring electrode are routed through a means for absorbing nitrogen oxides in the form of a regenerative nitrogen-oxide trap. | 07-01-2010 |
| 20100193356 | SENSOR ELEMENT AND METHOD AND MEANS FOR ITS PRODUCTION - A sensor element for gas sensors is described for determining gas components of a gas mixture, especially in exhaust gases of internal combustion engines, having at least one electrochemical measuring cell and at least one porous layer that is exposed to the gas mixture. The porous layer contains palladium, platinum, ruthenium, an alkali metal and/or an alkaline earth metal, the platinum being contained in the porous layer at a minimum concentration of 1.5 wt. %. Furthermore, a method and an impregnating solution are described for producing the sensor element. | 08-05-2010 |
| 20100230297 | GAS SENSOR FOR MEASURING A GAS COMPONENT IN A GAS MIXTURE - A ceramic gas sensor for measuring a gas component in a gas mixture, which includes a sensor element, which has at least one first electrode exposed to the gas mixture to be determined, and at least one further electrode. Only one shared electrical contacting is provided for the first electrode and for the additional electrode, an electrical resistor, which is situated inside the gas sensor, being preconnected to the first electrode and/or the additional electrode. | 09-16-2010 |
| 20110125414 | METHOD FOR OPERATING A GAS SENSOR - A method for operating a gas sensor is provided, wherein provision is made for determining the concentration of a gas component in a sample gas. In so doing, the gas sensor is operated in at least two different operational modes. A first operational mode ( | 05-26-2011 |
| 20120006692 | SOLID ELECTROLYTE GAS SENSOR FOR MEASURING VARIOUS GAS SPECIES - In a sensor element for a solid electrolyte gas sensor, comprising a gas-tight pumping chamber, a heater, a first pumping electrode arranged in the pumping chamber, and an at least second pumping electrode, an autonomous pumping cell is arranged as a gas inflow restrictor instead of a diffusion barrier. The autonomous pumping cell comprises an outer and an inner autonomous pumping electrode which are contacted or short-circuited from outside by means of a trimmable resistor. | 01-12-2012 |
