When a refrigerant evaporation temperature of an interior evaporator cannot be set lower than a dew-point temperature of air flowing into the interior evaporator in a heating operation, a refrigerant circuit is switched to a normal heating operation mode in which a flow rate of the refrigerant flowing into the interior evaporator is set to zero by allowing the refrigerant to flow toward a bypass passage. In a case where the air cannot be dehumidified by the interior evaporator, an unnecessary heat exchange between the air and the refrigerant in the interior evaporator can be suppressed. Thus, the energy of the vehicle air conditioner can be effectively prevented from being wasted.

A method for air-conditioning an interior of a vehicle to prevent fogging of the windows when at least one identifiable user enters the vehicle. The vehicle has a vehicle communication device which communicates with at least one user communication unit, a climate detection device for detecting the climate in the interior of the vehicle or for detecting the climate in the interior and in the area surrounding the vehicle, as well as a climate modification device for changing the climate in the interior of the vehicle. The method comprises steps of: checking by means of whether an identifiable user is approaching the vehicle, testing whether a fogging of at least one of the windows of the vehicle is to be expected when the user enters the vehicle, and air-conditioning the interior of the vehicle in such a way that fogging of the windows of the vehicle is prevented.

Disclosed in the present invention is a vehicle heat pump system capable of improving dehumidification performance by increasing the flow of a refrigerant toward an evaporator during heating and dehumidifying modes. The vehicle heat pump system comprises: a bypass line which branches off between a first expansion valve and an outdoor heat exchanger and bypasses through the outdoor heat exchanger and the evaporator; a first refrigerant flow control valve for adjusting the opening degree between the bypass line and a refrigerant line toward the outdoor heat exchanger; a dehumidification line branching off between the first expansion valve and the first refrigerant flow control valve to supply the refrigerant to the evaporator; and a control unit for controlling the amount of refrigerant supplied to the dehumidification line according to outdoor air temperature or compressor RPM.

Vehicle air conditioning device executes the dehumidifying mode in which a controller lets refrigerant discharged from compressor 2 radiate heat in radiator 4, decompresses the refrigerant from which heat has been radiated and then lets the refrigerant absorb heat in heat absorber 9 and outdoor heat exchanger 7, or lets the refrigerant discharged from compressor 2 radiate heat in radiator 4 and outdoor heat exchanger 7, decompresses the refrigerant from which heat has been radiated and then lets the refrigerant absorb heat in heat absorber 9. In the dehumidifying mode, the controller executes simple control to compare a target value of an index that is a basis of control of the outdoor expansion valve with an actual detected value and to change a valve position of the outdoor expansion valve from a magnitude relation between the value in an enlarging direction or a reducing direction as much as a constant value.

A suspension attachment structure for a motor vehicle is described, comprising a main body adapted to be fixed to a frame of the motor vehicle and adapted to support one or more suspensions of the motor vehicle; and a fluidic path adapted to be crossed, in use, internally by a fluid. The fluidic path comprises, in turn, an opening for the inlet of the fluid, an opening for the outlet of the fluid and a heat exchange portion fluidly interposed between the inlet opening and the outlet opening and supported by the main body. The heat exchange portion, in addition, is adapted to be hit, in use, on the outside by an air flow.

A control device is provided to make recognize an occupant that an operation by the occupant may affect an anti-fog performance of an air conditioner unit, and to control the anti-fog performance of the occupant's own will. When the occupant operates an air conditioner operation panel during self-driving in LV3 and when the operation possibly lowers the anti-fog performance of the air conditioner unit, the occupant is notified of; information that the operation possibly lowers the anti-fog performance; and information to preannounce lowering of the self-driving level to LV2 after elapse of a predetermined time. When the operation is cancelled before elapse of the predetermined time, the notification is terminated and the self-driving in LV3 is maintained. When the operation is not cancelled before elapse of the predetermined time, the self-driving level is switched to LV2 and an air-conditioning state is switched according to the operation.

A heat exchange system includes a core of cross flow passages having a reheater, and a condenser that is downstream of and directly interfaces the reheater. A first water extractor is downstream of the condenser, wherein the first water extractor turns a first fluid from the first pass of the condenser back towards the condenser and produces a second fluid that flows into the second pass of the condenser. A second water extractor is downstream the condenser, wherein the second water extractor turns a third fluid from the second pass of the condenser towards the reheater; and produces a fourth fluid that flows into the reheater.

A vehicle air conditioning apparatus is provided that can prevent temperature variations of the air after the heat exchange in a radiator to reliably control the temperature of the air supplied to the vehicle interior. During the heating operation and the heating and dehumidifying operation, target degree of supercooling SCt when target air-blowing temperature TAO is a predetermined temperature or higher is set to SCt1 that is greater than SCt2 when the target air-blowing temperature TAO is lower than the predetermined temperature. When amount of air Ga supplied from indoor fan 12 is lower than a predetermined value, the target degree of supercooling SCt is corrected, which is set such that the degree of supercooling is lower than target degree of supercooling corrected when the amount of air Ga supplied from the indoor fan 12 is a predetermined value or higher.

Methods and systems are provided for adjusting engine operating parameters to regulate condensate formation in a charge air cooler. Based on conditions conducive to condensate formation, one or more of throttle valve position, active grille shutter opening and compressor speed may be regulated in order to decrease dew point temperature and condensation at the charge air cooler.

A vehicle air conditioning apparatus is provided that can prevent temperature variations of the air after the heat exchange in a radiator to reliably control the temperature of the air supplied to the vehicle interior. During the heating operation and the heating and dehumidifying operation, target degree of supercooling SCt when target air-blowing temperature TAO is a predetermined temperature or higher is set to SCt1 that is greater than SCt2 when the target air-blowing temperature TAO is lower than the predetermined temperature. When amount of air Ga supplied from indoor fan 12 is lower than a predetermined value, the target degree of supercooling SCt is corrected, which is set such that the degree of supercooling is lower than target degree of supercooling corrected when the amount of air Ga supplied from the indoor fan 12 is a predetermined value or higher.