Variable-speed pump control for engine coolant system with variable restriction
AssigneeFord Global Technologies, LLC
InventorsOsama A. Abihana, Scott M. Robichaud, Scott J. Thompson
Life of this patent
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AssigneeFord Global Technologies, LLC
InventorsOsama A. Abihana, Scott M. Robichaud, Scott J. Thompson
Estimating the term…
A cooling system for an internal combustion engine in a vehicle comprises a variable-speed coolant pump for providing a coolant flow to a plurality of heat-transfer nodes coupled in a coolant loop with the pump. Each node generates a flow rate request based on an operating state of the node. The coolant loop is configurable to a plurality of restriction states. A pump controller receives the flow rate requests, maps each respective flow request to a pump flow rate that would produce the respective pump flow rate request, selects a largest mapped pump flow rate, identifies a restriction state in which the coolant loop is configured, selects a pump speed in response to the selected flow rate and the identified restriction state, and commands operation of the pump to produce the selected pump speed.
A vehicle apparatus comprising:
A method of controlling coolant flow rate provided by a variable-speed coolant pump in a coolant loop in a vehicle, the method comprising the steps of:
An apparatus comprising:
Dependencies are inferred from the claim text.