A heating apparatus of the invention executes a first heating control for heating a heater core by a heat generation device when a process of heating the heater core is requested while an engine operation is stopped. The heating apparatus executes a second heating control for heating the cooling water which cooled an internal combustion engine, by the heat generation device and supplying the heated cooling water to the heater core when a heater core temperature is not increased to a requested temperature only by the heat generation device. The heating apparatus executes a third heating control for stopping the engine operation, heating the cooling water which cooled the internal combustion engine, by the heat generation device, and supplying the heated cooling water to the heater core when an engine temperature becomes equal to or higher than a predetermined temperature while the second heating control is executed.

A control method for an integrated thermal management system of a vehicle includes: comparing an engine coolant temperature with a predetermined first set temperature after vehicle start; when the engine coolant temperature is greater than the first set temperature, comparing an ambient temperature with a set ambient temperature and comparing an air conditioner refrigerant pressure with a set pressure; and when the ambient temperature is greater than the set ambient temperature and the air conditioner refrigerant pressure is greater than the set pressure, controlling opening and closing operations of an integrated flow control valve based on the air conditioner refrigerant pressure so as to increase a flow rate of coolant that is supplied to a radiator through the integrated flow control valve.

A vehicle air-conditioning system and a method for operating that vehicle air-conditioning system in dependence on the difference between the temperature of the engine coolant at the inlet into the heating heat exchanger and the temperature of the air at the outlet out of the heating heat exchanger are provided. The measured or estimated temperatures of the coolant at the inlet into the heating heat exchanger and of the air at the outlet out of the heating heat exchanger are checked to determine whether their values indicate fault states of components of the air-conditioning system.

A vehicle air-conditioning system and a method for operating that vehicle air-conditioning system in dependence on the difference between the temperature of the engine coolant at the inlet into the heating heat exchanger and the temperature of the air at the outlet out of the heating heat exchanger are provided. The measured or estimated temperatures of the coolant at the inlet into the heating heat exchanger and of the air at the outlet out of the heating heat exchanger are checked to determine whether their values indicate fault states of components of the air-conditioning system.

A refrigerant cycle device includes a compressor, a radiator, a first expansion valve, a second expansion valve, a first evaporator, a second evaporator, and a controller. The controller is configured to switch between a first evaporator priority control and a second evaporator priority control. During the first evaporator priority control, the controller controls a throttle opening of the second expansion valve based on at least one of a temperature of a first evaporator, a temperature of a refrigerant flowing through the first evaporator, and a temperature of an air having exchanged heat in the first evaporator. During the second evaporator priority mode, the controller controls the throttle opening based on a refrigerant state of the second evaporator. When the at least one of the temperatures is equal to or greater than a switching temperature, the second priority mode is switched to the first priority mode.

A cooling system mounted in a vehicle includes a radiator exchanging heat with the outside air; first and second flow paths; and a control device. The first path is configured so that when the first pump is operating, a heat medium circulates through the radiator and a first heat exchanger exchanging heat with the inverter. The second flow path is connected to the radiator in parallel with the first flow path, and is configured so that when the second pump is operating, the heat medium circulates through the radiator and a second heat exchanger exchanging heat with the battery. The control device controls the outputs of the first and second pumps so that when making both of the outputs rise or fall, the flow rate of the heat medium flowing through the first flow path becomes temporarily larger than the target flow rate.

A cooling system mounted in a vehicle includes a radiator exchanging heat with the outside air; first and second flow paths; and a control device. The first path is configured so that when the first pump is operating, a heat medium circulates through the radiator and a first heat exchanger exchanging heat with the inverter. The second flow path is connected to the radiator in parallel with the first flow path, and is configured so that when the second pump is operating, the heat medium circulates through the radiator and a second heat exchanger exchanging heat with the battery. The control device controls the outputs of the first and second pumps so that when making both of the outputs rise or fall, the flow rate of the heat medium flowing through the first flow path becomes temporarily larger than the target flow rate.

A vehicle thermal management system including an engine, a vehicle cabin, a transmission thermal loop, and a controller is provided. The transmission thermal loop may include a transmission assembly in operational communication with the engine and a cabin thermal loop. The controller may be programmed to, responsive to detection of an engine off condition, output to a shut-off valve an open command such that heat from the transmission thermal loop transfers to the cabin thermal loop to warm the vehicle cabin. The controller may be further programmed to, responsive to detection of a cabin heater core having a temperature above a predetermined threshold, output a command to a coolant heater of an engine thermal loop to direct warm or cold fluid to the transmission assembly based on a detected transmission thermal loop temperature.

A vehicle thermal management system including an engine, a vehicle cabin, a transmission thermal loop, and a controller is provided. The transmission thermal loop may include a transmission assembly in operational communication with the engine and a cabin thermal loop. The controller may be programmed to, responsive to detection of an engine off condition, output to a shut-off valve an open command such that heat from the transmission thermal loop transfers to the cabin thermal loop to warm the vehicle cabin. The controller may be further programmed to, responsive to detection of a cabin heater core having a temperature above a predetermined threshold, output a command to a coolant heater of an engine thermal loop to direct warm or cold fluid to the transmission assembly based on a detected transmission thermal loop temperature.

Vehicular heat management system includes a refrigerant circulation line including a compressor, a high pressure side indoor heat exchanger, a heat pump mode expansion valve, an outdoor heat exchanger, an air conditioning mode expansion valve, low pressure side indoor heat exchanger and a refrigerant-cooling water heat exchanger; an air conditioning mode branch line branched from the refrigerant circulation line and configured to, in an air conditioning mode, form a cooling loop by circulating a refrigerant through the compressor, the high pressure side indoor heat exchanger, the outdoor heat exchanger, the air conditioning mode expansion valve and low pressure side indoor heat exchanger. Heat pump mode branch line branched from the refrigerant circulation line is configured, in heat pump mode to form a heating loop by circulating the refrigerant through the compressor, the high pressure side indoor heat exchanger, the heat pump mode expansion valve and the refrigerant-cooling water heat exchanger.