摘要:
An air conditioning device for vehicle includes a first water-refrigerant heat exchanger, a second water-refrigerant heat exchanger, a first bypass passage, and a second bypass passage. The first bypass passage branches at a point of a coolant passage from a cooling portion of a heating component in the vehicle to the second water-refrigerant heat exchanger, and the first bypass passage is capable of being communicated with the coolant passage at an upstream side of the first water-refrigerant heat exchanger. The second bypass passage branches at a point of the coolant passage from a heater core to the first water-refrigerant heat exchanger, and the second bypass passage is capable of being communicated with the coolant passage at a downstream side of the first water-refrigerant heat exchanger. A part of the first bypass passage which includes a downstream end and a part of the second bypass passage which includes an upstream end are shared.
摘要:
A method for operating a refrigeration system for a mobile unit includes steps of: 1) providing a refrigeration unit having a compressor, an evaporator, and at least one fan operable to move air towards the evaporator, a generator dedicated to the refrigeration unit, and a battery; 2) determining at least one environmental parameter in one or both of the mobile unit and the refrigeration unit; and 3) selectively operating the refrigeration unit in one of a plurality of modes based on the environmental parameter. The plurality of modes includes a first mode wherein at least the fan is powered by the battery, and a second mode wherein the compressor and the fan are powered by the generator.
摘要:
The present invention relates to a controlling method of an air conditioning system for vehicles. The method of the present invention includes the steps of: setting up a target indoor temperature of a vehicle determined by a user; inputting the indoor and outdoor temperature of the vehicle and solar radiation with referencing to a sensor mounted on a certain position of the vehicle; calculating a target discharge temperature (T1) of a vent; inputting the maximum evaporator temperature (T2); setting up a target evaporator temperature by comparing the T1 with the T2; calculating the opening degree of a temperature control door; measuring actual evaporator temperature while controlling the discharge capacity of a compressor; calculating an output value of each operation part by using the actual evaporator temperature and the opening degree of the temperature control door determined by the target discharge temperature; and outputting the calculated output value of the operation part.
摘要:
Described herein is a automotive air-conditioning system (1) configured to implement a sub-critical refrigerating cycle and comprising a condenser (5) and a fan (17) associated thereto, a compressor (14), an evaporator (10), an expansion valve (16) of the non-electronically-controlled type, and an electronic control system (2) configured to receive a signal indicative of the ambient temperature (T ext ) outside the vehicle and to generate a control signal (S c ) for the fan (17) of the condenser () on the basis of the ambient temperature (T ext ) outside the vehicle.
摘要:
An air conditioner for a vehicle comprises a refrigeration cycle including a variable displacement compressor for refrigerant which uses an engine as a drive source, a condenser, and an evaporator, a displacement adjustment means for outputting a displacement control signal to the compressor, and a compressor torque calculation means for calculating the torque of the compressor. The compressor torque calculation means includes at least two torque estimation means of a saturation region torque estimation means corresponding to a case where the compressor is driven at a maximum discharge displacement and a displacement control region torque estimation means corresponding to a case where it is driven at a discharge displacement other than the maximum discharge displacement, and also includes a correction means for correcting the calculation of the torque of the compressor when a change in engine rotational speed greater than a set value is detected. Even when the engine rotational speed changes rapidly, the torque of the compressor in the refrigeration cycle can be precisely calculated.
摘要:
In a vehicle equipped with an air conditioning system (1) including a heat exchanger for heating or cooling supply air to a cabin of the vehicle by heat exchange with heat transfer medium supplied from an accessory (6, 8) driven by a vehicle engine, a value relating to the capability of the heat transfer medium to heat or cool the supply air is detected, and the engine is automatically stopped for a predetermined period when the vehicle is stopping, the air conditioning system ( 1 ) is in operation and the detected value meets a specified condition (a condition that the engine cooling water temperature is equal to or higher than a specified temperature).