Method for the control of the switching on and off behavior of an air conditioning system
AssigneeGeneral Motors Corporation
InventorsGiles M. Brandon, Francois M. Bancon, Vincent M. Braunschweig, Jean Marie M. L'Huillier
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Abstract
In a method for the control of the switching on behavior of an air conditioning system having a condenser, an evaporator, an expansion device and a compressor, the stroke of which can be set via a valve, the compressor is driven by a drive via a clutch. The imminent or already accomplished engagement of the clutch is detected as an event by an electronic control system of the air conditioning system. In the method the valve for the control of the stroke of the compressor is actuated in dependence on the event by the control system in order to minimize the torque fluctuations transmitted to the drive.
Claims7
Method for the control of the switching on and off behavior of an air conditioning system having a compressor, the stroke of which is set via a variably activated valve, and a user operated A/C switch to turn the air conditioning system on and off, with the compressor being driven by a drive via a clutch that is engaged or disengaged, the imminent or already accomplished engagement or disengagement of which is detected as an event by an electronic control system of the air conditioning system, said method comprising the steps of:
- progressively adjusting the activation of said valve to a predetermined setting corresponding to a minimum compressor stroke when the imminent or already accomplished disengagement of the clutch is detected due to a turn off of the air conditioning system by the user operated A/C switch;
- and
- immediately adjusting the activation of said valve to said predetermined setting when the imminent or already accomplished disengagement of the clutch is detected due to a condition other than turn off of the air conditioning system by the user operated A/C switch.
Dependencies are inferred from the claim text.