Diagnosing A Hydrogen Sensor
AssigneeSchaeffler Technologies AG & Co. KG
InventorsThorsten Knittel, Wolfgang Lauerer, Andreas Meyer, Stefan Pesahl
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Abstract
Various embodiments of the teachings herein include a method of diagnosing a hydrogen sensor having a measurement space, a heater and a temperature sensor, wherein the measurement space is fluidly connected to an environment of the hydrogen sensor by a measurement space opening closed by a gas-permeable and liquid-impermeable membrane. An example includes: changing the temperature in the measurement space using the heater; ascertaining a diagnosis value in the measurement space using the temperature sensor; and determining a diagnosis based at least in part on the diagnosis value.
Claims13
A method of diagnosing a hydrogen sensor having a measurement space, a heater and a temperature sensor,
- wherein the measurement space is fluid connected to an environment of the hydrogen sensor by a measurement space opening closed by a gas-permeable and liquid-impermeable membrane,
- the method comprising:
- changing the temperature in the measurement space using the heater;
- ascertaining a diagnosis value in the measurement space using the temperature sensor;
- and
- determining a diagnosis based at least in part on the diagnosis value.
(canceled)
(canceled)
A hydrogen sensor comprising:
- a measurement space;
- a heater;
- a temperature sensor;
- wherein the measurement space is fluid connected to an environment of the hydrogen sensor by a measurement space opening;
- a membrane closing the measurement space opening;
- wherein the membrane is gas-permeable and liquid-impermeable;
- and
- a controller operable to change the temperature in the measurement space using the heater, ascertain a diagnosis value in the measurement space using the temperature sensor, and determine a diagnosis based at least in part on the diagnosis value.
13-14. (canceled)
Dependencies are inferred from the claim text.