System and method for cooling fan control
First Claim
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1. A thermal management system for a vehicle, comprising:
- first and second fans connectable to a heat exchanger arrangement having a plurality of separated cooling loops therein such that the first fan is operable to move air through at least two of the cooling loops, and the second fan is operable to move air through at least one of the cooling loops, the at least one of the cooling loops being different from the at least two of the cooling loops, the heat exchanger arrangement being connectable to a heat-producing system of the vehicle, and the heat exchanger arrangement and the fans forming a part of a cooling system for the heat-producing system; and
a control system including at least one controller and operable to control the fans, the control system being configured to control the first fan at least in part according to temperature values correlated with a first set of fan outputs, and to control the second fan at least in part according to the temperature values correlated with a second set of fan outputs, at least some of the second set of fan outputs being higher than the first set of fan outputs at the same respective temperature values, the temperature values correlated with the first set of fan outputs and the temperature values correlated with the second set of fan outputs being based on a temperature parameter that is the same for both fans.
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Abstract
A plurality of fans is connectable to a heat exchanger arrangement having a plurality of separated cooling loops. At least one of the fans is operable to move air through at least two of the cooling loops, and at least one other fan is operable to move air through at least one of the cooling loops. A control system includes at least one controller and is operable to control each of the at least one fan using a respective control strategy correlating temperature values with fan outputs, and to control each of the at least one other fan using a respective control strategy that is different from each control strategy used to control the at least one fan.
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Citations
22 Claims
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1. A thermal management system for a vehicle, comprising:
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first and second fans connectable to a heat exchanger arrangement having a plurality of separated cooling loops therein such that the first fan is operable to move air through at least two of the cooling loops, and the second fan is operable to move air through at least one of the cooling loops, the at least one of the cooling loops being different from the at least two of the cooling loops, the heat exchanger arrangement being connectable to a heat-producing system of the vehicle, and the heat exchanger arrangement and the fans forming a part of a cooling system for the heat-producing system; and a control system including at least one controller and operable to control the fans, the control system being configured to control the first fan at least in part according to temperature values correlated with a first set of fan outputs, and to control the second fan at least in part according to the temperature values correlated with a second set of fan outputs, at least some of the second set of fan outputs being higher than the first set of fan outputs at the same respective temperature values, the temperature values correlated with the first set of fan outputs and the temperature values correlated with the second set of fan outputs being based on a temperature parameter that is the same for both fans. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 21, 22)
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14. A thermal management system for a vehicle, comprising:
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a plurality of fans connectable to a heat exchanger arrangement having a plurality of separated cooling loops therein such that at least one fan of the fans is operable to move air through at least two of the cooling loops, and at least one other fan of the fans is operable to move air through at least one of the cooling loops, the at least one of the cooling loops being different from the at least two of the cooling loops, the heat exchanger arrangement being connectable to a heat-producing system of the vehicle, and the heat exchanger arrangement and the fans forming a part of a cooling system for the heat-producing system; and a control system including at least one controller and operable to control each of the at least one fan using a respective control strategy correlating temperature values of a temperature parameter with fan outputs, and to control each of the at least one other fan using a respective control strategy correlating temperature values of the temperature parameter with different fan outputs. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification