This disclosure provides a control method and control system for two or more air-conditioning water chilling units, and air conditioning system. The control method includes: receiving generated by the air-conditioning water chilling units based on a standby condition; determining whether or not two or more standby requests are received; generating standby sequence numbers of the air-conditioning water chilling units according to the standby requests in case where two or more standby requests are received; and closing the air-conditioning water chilling units according to a preset rule based on the standby sequence numbers. When a plurality of air-conditioning water chilling units are used in combination, the control method, control system, and air conditioning system provided by this disclosure can avoid frequent start and stop of the air-conditioning water chilling units, increases the service time of the air-conditioning water chilling units and improves the overall equilibrium control effect.

A transport refrigeration unit system (26) for cooling a trailer compartment (24) is provided. The transport refrigeration unit system (26) includes an engine for controlling a cooling rate capacity, the engine operable at a nominal high speed and a nominal low speed. Also included is a controller (50) in operative communication with the engine to control an engine speed of the engine. Further included is a user interface (52) in operative communication with the controller (50), the user interface (52) providing a high capacity cooling mode to a user, wherein initiation of the high capacity cooling mode includes the engine operating at a speed greater than the nominal high speed to result in a high capacity cooling rate.

A vehicular cooling device capable of instant cooling, includes: a main cooling system including a compressor, a condenser, a liquid receiver, an expansion valve and an evaporator which are connected for circulating a refrigerant, and an instant cooling system for enabling the refrigerant to flow to the liquid receiver, the expansion valve, the evaporator and a pre-cooling means disposed between the evaporator and the compressor, wherein the vehicular cooling device is capable of instantly cooling an inside of the vehicle by enabling the refrigerant not to circulate through a line of the main cooling system when the instant cooling system operates, and enabling the refrigerant stored in the liquid receiver to flow to the pre-cooling means via the evaporator due to pressure difference between the liquid receiver and the pre-cooling means.

A vehicle air conditioner includes a bypass passage configured to cause a coolant to circulate while bypassing a heater core, a switching device set to switch between a first mode in which the coolant flows through the bypass passage and returns to an internal combustion engine while bypassing the heater core and a second mode in which the coolant flows to the heater core, a coolant-temperature sensor that detects a temperature of the coolant at a part through which the coolant flows in both the first mode and the second mode, and a control unit that controls an operation of a blower based on the coolant-temperature control data. Furthermore, first and second calculating portions are configured to calculate the coolant-temperature control data in the first and second modes, respectively. The first calculating portion calculates the coolant-temperature control data based on the temperature of the coolant detected at start-up of the internal combustion engine, and the second calculating portion sets, as the coolant-temperature control data, a temperature lower than the detected temperature of the coolant.

An externally-controlled variable displacement compressor (EVDC) cold-start method is described including, during an EVDC cold-start procedure, iteratively alternating an amount of a control current supplied to an electronic control valve (ECV) associated with the EVDC between no control current and a full control current. Systems for implementing the described method are provided.

Illustrative examples of a vehicle system and associated methods may be directed to monitoring one or more vehicle components to prevent excess temperatures or heat. A thermal controller may be configured to determine a timer based on a predicted thermal input, and based on the timer, compare a temperature of the vehicle component to a temperature threshold. The thermal controller may be further configured to send an instruction to reduce the temperature of the vehicle component based on the comparison of the temperature to the temperature threshold.

A temperature adjustment system for an electric vehicle includes: a compressor for compressing a CO.sub.2 coolant; a first heat exchanger for cooling the coolant compressed by the compressor; cooling expansion valves for expanding the coolant cooled by the first heat exchanger; a coolant passage for supplying the coolant expanded by the cooling expansion valve to an air conditioner when cooling the air; a coolant passage for supplying the coolant expanded by the cooling expansion valves to a motor when cooling the motor; a common rail and an injector for expanding and injecting the coolant into a battery case; coolant passages for supplying the coolant after cooling the air conditioner to the common rail and the injector when cooling the air conditioner and cooling a battery; and coolant passages for supplying the coolant that has passed through the air conditioner, the motor, and the battery to the compressor.