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AssigneeRobert Bosch GmbH
InventorsHartmut Brammer, Joachim Kuhrau, Otto Schuster, Walter Schieferle, Anita Rose, Bernd Kuenzl, Hermann Bundschuh, Herbert Biederwolf
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A temperature sensor for measuring and/or monitoring the temperature of a medium flowing in a flow conduit of an internal combustion engine. The sensor has a one-piece plastic body with a sensor and plug part, a resistor element, connecting plug tongues, and a housing that receives the sensor part. In order to reduce production and installation costs and to attain other advantages as well, the housing is of temperature-resistant plastic that absorbs little moisture, sprayed directly onto the sensor part. For sealingly and securing the housing in a receiving bore in the wall of the flow conduit, a radially protruding annular bead is injection molded to the housing, and a sealing ring is plastic between the plug part and the annular bead.
A temperature sensor for measuring and/or monitoring the temperature of a medium flowing in a flow conduit (17) of an internal combustion engine, comprising a one-piece plastic body (11) that has a sensor part (111) and a plug part (112), on an end remote from the plug part, a NTC resistor element is disposed, and whose plug part (112) has two externally accessible electrical terminals (13), which are connected to the resistor element (12) via two electrical lines embedded in the sensor part (111), and having a housing (15) that completely surrounds the sensor part (111) and has means for sealing and securing the plastic body in a receiving bore (19) in the wall (18) of the flow conduit (17), the housing (15), of temperature-resistant plastic that absorbs little or no moisture, is applied directly onto the sensor part (111) to completely surround the sensor part (111).
Dependencies are inferred from the claim text.