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US 8,147,667 B2Granted
Exhaust gas sensor and method of manufacture
AssigneeRobert Bosch GmbH
InventorJohn Robison
Life of this patent
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Abstract
A method of manufacturing an exhaust gas sensor that includes positioning at least a portion of a subassembly of the exhaust gas sensor in a mold fixture, overmolding at least a portion of the subassembly with a ceramic material, and removing the overmolded subassembly from the mold fixture.
Claims24
An exhaust gas sensor assembly comprising:
- a housing;
- a sensor element partially received in the housing;
- a ceramic material overmolded to the housing to bond the ceramic material and the housing together and to encapsulate a portion of the sensor element;
- and
- a weld ring molded to the ceramic material to bond the ceramic material and the weld ring together, the weld ring being spaced apart from the housing.
2 more elements
An exhaust gas sensor assembly comprising:
- a housing;
- a sensor element partially received in the housing;
- a ceramic material molded directly to the housing to bond the ceramic material and the housing together at a first end of the ceramic material and to encapsulate a portion of the sensor element, the ceramic material extending away from the housing to a second end;
- a weld ring molded directly to the ceramic material at the second end to bond the ceramic material and the weld ring together, the weld ring being spaced apart from and connected to the housing by the ceramic material;
- and
- a wire harness subassembly, the wire harness subassembly including a wire and a sleeve, the sleeve of the wire harness subassembly being welded to the weld ring;
- wherein the ceramic material provides an insulating barrier between the housing and the sleeve of the wire harness subassembly.
4 more elements
Dependencies are inferred from the claim text.