Abstract: 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.

Abstract: 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.