Blower motor operation for an electrified vehicle
AssigneeFord Global Technologies, LLC
InventorsMark G. Smith, Chris George Oehring, Jasbir Jaglan, Angel Fernando Porras
Life of this patent
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Abstract
A method of operating a vehicle climate system includes, by a controller, responsive to a same blower motor request, operating a blower motor at a first speed responsive to a heater core isolation valve (HCIV) directing coolant used to heat a cabin to an engine. The method further includes, by the controller, responsive to the same blower motor request, operating the blower motor at a second speed less than the first speed responsive to the HCIV directing the coolant to an electric heater and not to the engine.
Claims6
A method of operating a vehicle climate system, comprising:
- by a controller, responsive to a same blower motor request,
- receiving a signal indicative of a cylinder head temperature (CHT) and a signal indicative of a heater core temperature (HCT);
- operating a blower motor at a first voltage when an engine coolant temperature (ECT) is higher than the HCT, wherein the ECT is based on the CHT;
- and
- operating the blower motor at a second voltage lower than the first voltage when the CHT is lower than the HCT.
A method of operating a vehicle climate system, comprising:
- by a controller responsive to the same blower motor setting,
- operating a blower motor according to a first blower motor voltage range having a first minimum voltage and a first maximum voltage responsive to the ambient temperature being lower than the first predefined threshold,
- operating the blower motor according to a second blower motor voltage range having a second maximum voltage that is less than the first maximum voltage responsive to the ambient temperature being lower than a second predefined threshold that is lower than the first predefined threshold, and
- operating the blower motor according to a third blower motor voltage range having a third maximum voltage that is less than the second maximum voltage responsive to the ambient temperature being lower than a third predefined threshold that is lower than the second predefined threshold.
A method of operating a vehicle climate system, comprising:
- by a controller, responsive to a same blower motor setting and ambient temperature being less than a first predefined threshold, the method further comprising:
- operating a blower motor according to a first blower motor voltage range having a first minimum voltage and a first maximum voltage responsive to the ambient temperature being lower than the first predefined threshold,
- operating the blower motor according to a second blower motor voltage range having a second maximum voltage that is less than the first maximum voltage responsive to the ambient temperature being lower than a second predefined threshold that is lower than the first predefined threshold, and
- operating the blower motor according to a third blower motor voltage range having a third maximum voltage that is less than the second maximum voltage responsive to the ambient temperature being lower than a third predefined threshold that is lower than the second predefined threshold.
Dependencies are inferred from the claim text.