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US 2017/0335751 A1Published application
Monitoring engine coolant
AssigneeFord Global Technologies, LLC
InventorCarl Stephen Newman
Life of this patent
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Abstract
An engine coolant temperature sensor configured to earth through the engine coolant such that an alarm will trigger when coolant is absent.
Claims20
An engine coolant temperature sensor comprising:
- an earth wire configured to earth through engine coolant in a coolant conduit and trigger an alarm when coolant is absent in the coolant conduit.
An engine system comprising:
- an engine coolant temperature sensor including,
- a plurality of temperature sensing wires enclosed in a housing, and
- an earth wire enclosed in the housing and spaced away from the plurality of temperature sensing wires.
A method for operating an engine system comprising:
- determining an engine temperature based on signals from a plurality of temperature sensing wires in an engine coolant temperature sensor;
- and
- determining if the engine coolant temperature sensor is grounded based on signals from an earth wire in the engine coolant temperature sensor.
Dependencies are inferred from the claim text.