A transportation refrigeration unit TRU (26) and power system. The TRU (26) and power system including a compressor (58) operatively coupled to an evaporator heat exchanger (76) and an evaporator fan (98) configured to flow a return airflow (134) over the evaporator (76). The system also includes a return air temperature RAT sensor (142) disposed in the return airflow (134) and configured measure the temperature thereof, a TRU controller (82) connected to the RAT sensor (142) that executes a process to determine an AC power requirement for the TRU (26) based on the RAT sensor (142); a generator power converter (164) configured to receive three phase AC power (163) from a three phase AC generator (162) and transmit a second DC power (165b) to an energy storage system (150); a power management system (124a) configured to receive three phase AC power (157) from at least the energy storage system (150) and generate a TRU DC power (129), and directing the TRU DC power (129) to the TRU system (26).

A transportation refrigeration unit for cooling a cargo compartment includes a compressor configured to compress a refrigerant, a compressor motor configured to drive the compressor, an evaporator heat exchanger operatively coupled to the compressor and an evaporator fan configured to provide return airflow from a return air intake and flow the return airflow over the evaporator heat exchanger. A drive unit is configured to deliver variable frequency electrical power between a minimum frequency and a maximum frequency to the compressor motor and the evaporator fan. A frequency of the electrical power is based on one or more sensed parameters of the transportation refrigeration unit.

A power system architecture configured to power a transport refrigeration system (20) based on a determined an AC power requirement. The system (20) includes a generator power converter (164) configured to receive the generator three phase AC power (163) from an AC generator (162), and provide a generator DC power (165). The system (20) also includes a grid power converter (184) configured to receive the grid three phase AC power from a grid power source (182), and provide a grid DC power (185), an energy storage device (152), the energy storage device (152) operable to provide a DC power (157) and connected to a variable DC bus, and a power management system (190) operably connected to direct power (195) the TRU (26) based on at least the AC power requirement.

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.

Methods and systems are provided for optimizing engine climate control performance and fuel economy in engines configured with start/stop capabilities. Climate control inhibits of start/stop actions are adjusted as a function of operator driving habits and climate control inputs and preferences. The approach enables climate performance to be improved while also allowing for frequent idle-stop operation.

A vehicle air-conditioning device is a heat pump type vehicle air-conditioning device including an external heat exchanger that performs heat exchange between refrigerant flowing the inside thereof and outside air. With the vehicle air-conditioning device, a controller functions as a temperature-difference calculation unit that calculates the temperature difference ΔT between the refrigerant in a refrigerant flow path on the exit side of the external heat exchanger and the outside air, and in addition, the controller functions as a frost formation determination unit that determines that frost formation is caused on the external heat exchanger on the basis of the elapsed time to of a state in which the temperature difference ΔT is equal to or larger than a frost-formation temperature difference at which the frost formation may be caused on the external heat exchanger.

Disclosed is a transportation refrigeration unit (TRU 104) for conditioning air in a cargo box (106), the TRU including a TRU controller (108) that is electronically connected to a truck engine controller (170), wherein when a delta between a cargo box temperature and a cargo box set point temperature is greater than a predetermined threshold, the TRU controller actuates the truck engine (168) when the truck engine is off, and conditions air in the cargo box to return the cargo box temperature to the set point temperature.

A control system (300) for a transport engineless refrigeration unit (301), the control system including: a controller (302) for communication between a vehicle (307) and a plurality of vehicle devices, the controller comprising: a vehicle data connection (306) for transmitting data to and from a vehicle; a vehicle engine on/off connection (308) for triggering start-up of the vehicle engine; a plurality of device data connections (314), each device data connection transmits data to and from at least one device external to the controller; and a device power connection (313), the device power connection supplies power from the controller to at least one device external to the controller.

The present disclosure relates to an electrical equipment cooling system for a vehicle. For this, an embodiment relates to an electrical equipment cooling system for a vehicle, in which a condenser 300 and a fan unit 400 are disposed to be tilted with respect to a direction in which a running wind is inhaled.

A first evaporator cools air-conditioning air. A second evaporator cools an object. A first orifice unit and a second orifice unit are capable of changing a refrigerant amount of the first evaporator and the second evaporator, respectively. A control unit controls both the first orifice unit and the second orifice unit so that a temperature of the second evaporator approaches a target temperature. The control unit, in a first mode, performs control not to evaporate a refrigerant at the first evaporator and to evaporate the refrigerant at the second evaporator. The control unit, in a second mode, performs control to evaporate the refrigerant at both the first evaporator and the second evaporator. The control unit sets the target temperature in a first mode higher than that in a second mode.