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US 11,274,595 B1Granted
System and method for engine cooling system
AssigneeFord Global Technologies, LLC
InventorsHassan Farhat, Ravi Gopal, Yixin Yao
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for adjusting operation of each of a pump and a fan of an engine cooling system. In one example, a method may include adjusting a speed of the pump and a speed of the fan based on one or more of a temperature of coolant entering a heat exchanger of the cooling system, a temperature of air exiting the heat exchanger, and a temperature of air entering the heat exchanger.
Claims19
A method for operating a vehicle, the method comprising:
- adjusting a speed of a cooling fan and a speed of a cooling pump of the vehicle based on a ratio of temperature differences of a heat exchanger;
- and
- in response to a temperature of the coolant entering the heat exchanger being between a first temperature threshold and a second temperature threshold, incrementally increasing each of the speed of the fan and the speed of the pump, and sampling the ratio.
A method for an engine cooling system of a vehicle, comprising:
- adjusting a speed of a fan coupled to a radiator of the engine cooling system based on a thermal load;
- estimating an effectiveness of the radiator as a function of each of a coolant temperature entering the radiator, an inlet air temperature, and an outlet air temperature;
- and
- adjusting a speed of a pump circulating coolant through the engine cooling based on the estimated effectiveness of the radiator.
1 more element
A system for an engine, the system comprising:
- a controller including executable instructions stored in a non-transitory memory that cause the controller to:
- during engine operation, adjust each of a speed of a fan and a speed of a pump of a cooling system based on one or more of an estimated effectiveness of a radiator of the cooling system and a temperature of coolant entering the radiator;
- populate a model relating the speed of the fan and the speed of the pump with an effectiveness of the radiator;
- and
- further adjust each of the speed of the fan and the speed of the pump based on the temperature of coolant entering the radiator and the model.
2 more elements
Dependencies are inferred from the claim text.