Provided is a system and a method for estimating capacity. The system includes one or more sensors, a compressor coupled to one or more sensors, and a controller. The controller is configured to receive one or more parameters of a cooling system, receive system state information and one or more measurements from the cooling system (306, 308), and compute a cooling capacity (304) based at least in part on the one or more parameters, one or more measurements and system state information. The system is also configured to estimate cooling capacity based on one or more computed capacity over a period of time (310), and provide the estimated capacity of the cooling system to a device in real-time.

The refrigeration system is configured to adjust a temperature inside a vehicle compartment of the transport vehicle, the refrigeration system including an evaporator disposed in the vehicle compartment and the evaporator including evaporator coils (120) through which a refrigerant flows and a housing (110) for accommodating the evaporator coils; wherein the housing is further provided with a heating element (130); and the refrigeration system further includes a control module (140) configured to control the heating element. According to the refrigeration system for a transport vehicle, the control method thereof and the transport vehicle of the present disclosure, by disposing the heating element inside the housing of the evaporator, which is controlled to perform heating and stop heating according to actual situations, ice is prevented from being formed on the inner side of the housing, and condensation water is prevented from being formed on the outer side of the housing, thereby effectively improving the reliability of the preservation of goods.

A closed loop feedback control and diagnostics system for a transport climate control system is provided. The closed loop feedback control and diagnostics system includes a plurality of source current sensors configured to monitor current received from a high voltage three-phase AC power source. The closed loop feedback control and diagnostics system also includes a plurality of compressor current sensors configured to monitor current drawn by an electrically powered compressor of the transport climate control system. The closed loop feedback control and diagnostics system also includes a controller configured to receive source current signals from each of the plurality of source current sensors, configured to receive compressor current signals from each of the plurality of compressor current sensors, and configured to control operation of the transport climate control system based on the received source current signals and the received compressor current signals.

Proactive temperature maintenance in a temperature controlled unit of a delivery vehicle can be based on a computer data analysis of multiple temperature factors. A computer can receive route environmental data from a multiplicity of sources regarding temperatures outside a vehicle, including a temperature at a current location and temperatures at another location along a route of the vehicle. Route environmental data can be analyzed to determine when to initiate a proactive cooling action for maintaining a cooling requirement within a refrigerated space within the vehicle, and the cooling requirements can include a threshold temperature in the refrigerated space. A proactive cooling action can be initiated based on the analysis before the threshold temperature is reached by assessing temperature variations in the route environmental data for determining a temperature effect on the vehicle at one or more locations along the route.

A transport refrigeration system includes a transport refrigeration unit having a refrigerant circuit through which a refrigerant is circulated in heat exchange relationship with air drawn from a cargo box, a fuel-fired engine for powering the refrigeration unit and having an exhaust system through which exhaust gases generated by the engine are discharged and an engine coolant circuit, an engine exhaust gases to engine coolant heat exchanger, and an engine coolant circuit to refrigeration unit heat exchanger.

A transport vehicle having a refrigerated container and system of refrigeration is provided.

A system for protecting an engine from damage due to vibration while the engine is not operating is provided. The system includes an engine having a crankshaft, at least one piston, at least one bearing, a lubricating fluid source, and a fluid pump associated therewith and a controller operationally connected to and configured to control the fluid pump. When the system is in a first mode, the controller is configured to control the fluid pump in a duty cycle to maintain a predetermined minimum fluid pressure of the lubricating fluid such that a lubricating fluid film is present between the at least one bearing and the crankshaft while the engine is not operating.

A transport refrigeration system (TRS), a refrigerated transport unit, and a method of charging a thermal accumulator in a TRS are disclosed. The TRS includes a thermal accumulator including a phase change material (PCM) configured in a first state, to absorb thermal energy from the interior space of the transport unit during transformation to a second state. A heat exchanger, a portion of which is disposed within the thermal accumulator, is in thermal communication with the PCM. The TRS also includes an expansion device and a transport refrigeration unit (TRU). A heat transfer fluid circuit connects the TRU and the heat exchanger, and is configured to direct a heat transfer fluid from the TRU to the heat exchanger via the expansion device for charging the PCM.

A transport refrigeration unit (TRU) for a transport refrigeration system (TRS) is described. The TRU can be configured to have an upper compartment to accommodate a compressor and an engine, and a condenser compartment that is generally positioned below the upper comportment. The condenser compartment can include a condenser and a fan at a bottom portion of the condenser compartment. The fan can be configured to blow air out of the condenser compartment in a downward direction from the bottom portion of the condenser compartment. The TRU can also have an evaporator compartment that is generally positioned behind the condenser compartment. The evaporator compartment can accommodate an evaporator that is generally positioned below the upper compartment. The evaporator compartment can have an air inlet and an air outlet that is positioned higher than the air outlet. In operation, airflow through the evaporator compartment is directed in a downward direction.

A smart electric temperature-controlled system connected to a vehicle, such as a vehicle-transported refrigeration system, includes a power management system and an energy storage module. The power management system and energy storage module can manage power delivered to the temperature-controlled system components by monitoring temperatures and voltages (and possibly other factors) and by delivering power as a function of the things monitored. In a typical implementation the power management system and an energy storage module can supply power to a vehicle-transported refrigeration system when the vehicle is stopped and/or power from the vehicle electrical system is electrically isolated or otherwise unavailable.