In a heat management system for a vehicle, and a control method thereof, the control method includes: determining whether a delayed operation condition of a compressor is satisfied while the compressor is not operated; controlling an operation of the compr...

Provided is a refrigeration cycle suitable for an air conditioning system for vehicles, wherein a flow rate of refrigerant which is used to estimate a torque of a compressor can be precisely estimated by accurately detecting a difference between pressures ...

An air conditioner has a controller (24) that controls the operation of a refrigerant circuit that has a compressor (16), a condenser (18), an expansion valve (20) or orifice tube, and an evaporator (14). The condenser receives a compressed refrigerant fro...

A compressor torque estimate device is used for a variable displacement compressor whose displacement is variable based on a compressor control signal for estimating a compressor torque of the compressor. The compressor torque estimate device includes a to...

A non-linear control method for an air conditioning system (10) utilizes fuzzy logic to regulate the activation a displacement control valve (17) for a variable displacement compressor (12) for maintaining a system parameter, such as the evaporator outlet ...

The present invention relates to an air conditioning system for use in a motor vehicle powered by an internal combustion engine, comprising an electric motor powered by a battery; a capacity variable compressor arranged to be powered by at least one of sai...

A variable displacement type compressor circulates a refrigerant in an air conditioning circuit. The compressor has a compression mechanism and a displacement controller. The compression mechanism compresses and discharges the refrigerant. The displacement...

A method is presented for correcting estimates of accessory load torque. Engine output torque estimates are corrected (610) when the accessory is disengaged from the engine. Accessory load torque is learned, or corrected, when the accessory is engaged to t...