Temperature control system for a motor vehicle controlling the temperature of drivetrain components of a motor vehicle
Methods and systems are provided for a temperature control system of a vehicle In one example, a system includes an evaporator directly upstream of a heat exchanger and a plurality of valves configured to adjust flow of air passing through one or more of the evaporator and the heat exchanger.
1 . A system, comprising an evaporator arranged directly upstream of a heat exchanger;
a first valve configured to control air flow from the evaporator to a vehicle interior;
a second valve configured to control air flow from the evaporator to the heat exchanger;
a third valve configured to control air flow from the heat exchanger to the vehicle interior and to a vehicle environment; and
a controller with instructions stored on memory thereof that when executed enable the controller to:
select one or more of a plurality of operating modes in response to a vehicle interior temperature request and a drivetrain component temperature;
wherein the instructions cause the controller to select a first mode in response to an ambient temperature being less than a lower threshold ambient temperature and the drivetrain component temperature being less than an upper threshold component temperature, the first mode comprising deactivating the evaporator, the first valve being fully closed, the second valve being fully open, and the third valve positioned to allow air flow from the heat exchanger to the vehicle interior while blocking air flow to the vehicle environment.
2 . The system of claim 1 , where the instructions cause the controller to select a second mode in response to the ambient temperature being less than the lower threshold ambient temperature, the drivetrain component temperature being less than the upper threshold component temperature, and a humidity being greater than an upper threshold humidity, the second mode comprising activating the evaporator, the first valve being fully closed, the second valve being fully open, and the third valve positioned to allow air flow from the heat exchanger to the vehicle interior while blocking air flow to the vehicle environment.
3 . The system of claim 1 , wherein the instructions cause the controller to select a third mode in response to an ambient temperature being greater than an upper threshold ambient temperature and a drivetrain component temperature being less than an upper threshold component temperature, the third mode comprising activating the evaporator, the first valve being fully open and the second valve being fully closed.
4 . The system of claim 1 , wherein the instructions cause the controller to select a fourth mode in response to the drivetrain component temperature being greater than an upper threshold component temperature, the fourth mode comprising activating the evaporator, the first valve being fully closed, the second valve being fully open, and the third valve positioned to block air flow to the vehicle interior while flowing air to the vehicle environment.
5 . The system of claim 1 , wherein the instructions cause the controller to select a fifth mode in response to the drivetrain component temperature being less than an upper threshold component temperature and greater than a lower threshold component temperature, the fifth mode comprising deactivating the evaporator, the first valve being fully closed, the second valve being fully open, and the third valve positioned to block air flow to the vehicle interior while flowing air to the vehicle environment.
6 . The system of claim 1 , wherein the instructions cause the controller to select a sixth mode in response to the drivetrain component temperature being less than an upper threshold component temperature and greater than a lower threshold component temperature and a request for the vehicle interior to be cooled, the sixth mode comprising activating the evaporator, partially opening the first valve, partially opening the second valve, and the third valve positioned to block air flow to the vehicle interior while flowing air to the vehicle environment.
7 . The system of claim 1 , wherein the heat exchanger is a second heat exchanger of a vehicle, wherein a first heat exchanger is positioned upstream of the second heat exchanger adjacent to a vehicle grill, and wherein the second heat exchanger is positioned in a portion of the vehicle in line with a downstream end of a front wheel well.
8 . The system of claim 1 , wherein the vehicle environment is arranged downstream of a front wheel well.