Method for transitioning between vehicle climate control system modes
AssigneeFord Global Technologies, LLC
InventorsJohn Eric Rollinger, Jeffrey Allen Doering, Hugh Hamilton, Brent Jacobsen, Steve Pryor Perry
Life of this patent
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Abstract
A method for controlling transitions between activating and deactivating a vehicle air conditioner compressor is disclosed. In one example, displacement of the air conditioner compressor is adjusted before the air conditioner is coupled to an energy conversion device. The method may provide smooth transitions between different air conditioner compressor control modes.
Claims20
A method for controlling an air conditioner compressor of a vehicle, comprising:
- reducing a refrigerant pressurization capacity of the air conditioner compressor before engaging and disengaging the air conditioner compressor to an energy conversion device supplying rotational energy to the air conditioner compressor.
A method for controlling an air conditioner compressor of a vehicle, comprising:
- reducing a refrigerant pressurization capacity and negative torque to turn force of the air conditioner compressor before engaging the air conditioner compressor to an energy conversion device that supplies rotational energy to the air conditioner compressor;
- engaging a clutch to mechanically couple the air conditioner compressor to the energy conversion device;
- and
- increasing the refrigerant pressurization capacity and negative torque to turn force of the air conditioner compressor a predetermined amount of time after engaging said clutch.
A system for controlling an air conditioner of a vehicle, comprising:
- an energy conversion device;
- an air conditioner compressor including a piston and a variable displacement control valve for adjusting a stroke of the piston, the air conditioner also including a clutch that selectively couples the air conditioner compressor to the energy conversion device;
- and
- a controller including instructions for operating the variable displacement control valve to reduce a refrigerant pressurization capacity of the air conditioner compressor before the clutch is engaged.
Dependencies are inferred from the claim text.