Sealing element for sensors
AssigneeRobert Bosch GmbH
InventorsHelmut Weyl, Gerhard Schneider
Life of this patent
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Abstract
A seal for a sensor element of a gas sensor for determining the oxygen content in exhaust gases of internal combustion engines. The seal includes at least one sealing element that is inserted into a longitudinal bore of a housing and that includes a mixture of at least one ceramic compound and at least one fluoride compound.
Claims14
A seal for a sensor element of a gas sensor for determining an oxygen content in an exhaust gas of an internal combustion engine, comprising:
- a metallic housing;
- and
- at least one sealing element for sealing the sensor element in a longitudinal bore of the metallic housing, the at least one sealing element including a mixture of at least one ceramic compound and at least one fluoride compound.
A method for manufacturing a seal for a sensor element of a gas sensor for determining an oxygen content in an exhaust gas of an internal combustion engine, the method comprising the steps of:
- providing a metallic housing;
- and
- arranging at least one sealing element in a longitudinal bore of the metallic housing, wherein the at least one sealing element is formed according to the steps of:
- pressing a mixture including at least one ceramic compound and at least one fluoride compound to form a shaped element,
- performing one of a heat-treating step and a sintering step on the mixture, and
- deforming the shaped element into a plurality of powder constituents under an influence of a compressive force during an assembly of the gas sensor.
Dependencies are inferred from the claim text.