Air conditioning system for a motor vehicle and method for its operation
AssigneeFord Global Technologies, LLC
InventorsMarkus Markowitz, Dietmar Fischer
Life of this patent
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Abstract
In an air-conditioning system for a motor vehicle, having a coolant circuit formed from a compressor for compressing the coolant, a condenser for cooling the compressed coolant, an expansion device for reducing the pressure of the coolant and an evaporator for evaporating the coolant, a control unit is provided which is connected to at least one of the coolant circuit components and which is set up to adapt an operating characteristic of the component to at least two different coolants.
Claims17
An air-conditioning system for a motor vehicle, having a coolant circuit formed at least from the components:
- compressor for compressing the coolant;
- condenser for cooling the compressed coolant;
- expansion device for reducing the pressure of the coolant;
- and
- evaporator for evaporating the coolant, wherein
- a control unit is provided which is connected to at least one of the coolant circuit components and which is set up to adapt an operating characteristic of the coolant circuit component to at least two different coolants;
- said control unit further including a different characteristic curve or characteristic map or calculation algorithm associated with each different coolant for controlling an operating characteristic of the compressor wherein selecting one of said characteristic curves or characteristic maps or calculation algorithms associated with a different coolant adapts said control unit to said different coolant;
- and
- said control unit set up to monitor the temperature at the evaporator and the pressure at the compressor to determine the coolant in said coolant circuit and correspondingly use said different characteristic curve or characteristic map or calculation algorithm associated with the determined coolant to control said operating characteristic of said compressor.
An air-conditioning system for a motor vehicle, having a coolant circuit formed at least from the components:
- compressor for compressing the coolant;
- condenser for cooling the compressed coolant;
- expansion device for reducing the pressure of the coolant;
- and
- evaporator for evaporating the coolant, wherein
- a control unit is provided which is connected to at least one of the coolant circuit components and which is set up to adapt an operating characteristic of the coolant circuit component to at least two different coolants;
- and
- the control unit is set up such that it can determine a coolant which is filled into the coolant circuit on the basis of stored correlations of a pressure at the compressor and of a temperature at the evaporator, in particular taking into consideration an ambient temperature.
Dependencies are inferred from the claim text.