Disclosed is a transport refrigeration system including: an engine that is dedicated to the transport refrigeration system; a primary battery that is dedicated to the transport refrigeration system, the primary battery being electrically connected to the engine; and a jumper battery electrically connected to the primary battery, the jumper battery configured to automatically boost the primary battery when the primary battery fails to start the engine.

A transport refrigeration system includes a transport refrigeration unit, an energy storage device, a supply refrigerant tube, a return refrigerant tube and at least one electrical pathway. The transport refrigeration unit is adapted to cool a container. The energy storage device is adapted to provide electrical energy for operating the transport refrigeration unit. The supply refrigerant tube flows a refrigerant from the transport refrigeration unit to the energy storage device, and the return refrigerant tube flows the refrigerant from the energy storage device back to the transport refrigeration unit. The electrical pathway extends between the transport refrigeration unit and the energy storage device, and supplies at least electrical energy to the transport refrigeration unit.

A method of operating a transport refrigeration system having a plurality of inverters configured to power a refrigeration unit includes placing a first inverter of the plurality of inverters in an active state; monitoring a load on the first inverter; comparing the load on the first inverter to an upper threshold; placing a second inverter of the plurality of inverters in an active state upon the load on the first inverter being greater than the upper threshold.

A refrigeration system 1a includes a refrigerated compartment 2 for storing perishable goods; a refrigeration unit 10 operably coupled to the refrigerated compartment 2; a plurality of sensors including an internal temperature sensor 4 configured to determine a temperature of the refrigerated compartment 2, and a weight sensor 5a configured to determine a weight of the goods located within the refrigerated compartment 2; and a controller 20 configured to: receive data from the plurality of sensors; determine a thermal inertia parameter of the goods located within the refrigerated compartment 2 based upon the temperature of the refrigerated compartment 2 and the weight of the goods; and adjust a mode of operation of the refrigeration unit 10 in accordance with the thermal inertia parameter of the goods.

A cargo (22) detection system for a refrigerated cargo container (10) includes a cargo sensor (50) body configured to detect presence of cargo (22) in a refrigerated cargo container (10) and a sensor bracket (56) configured for securing the cargo sensor (50) body at a refrigeration unit (24) of the refrigerated cargo container (10). A temperature sensor (72) is located at the cargo sensor (50) body and is configured to detect a temperature of the cargo sensor (50) body. A temperature controller (74) is operably connected to the temperature sensor (72) and is configured to activate the cargo sensor (50) body for collection of data when the temperature of the cargo sensor (50) body is above a threshold.

A transportation refrigeration unit (24) to provide a flow of supply air to a selected space includes a compressor to compress a flow of refrigerant and an engine (36) powered by a flow of fuel and operably connected to the compressor to drive the compressor. An evaporator circulates the flow of refrigerant therethrough to cool the supply air and includes a substantially unitary evaporator housing (50) having a supply air inlet opening (52) and a supply air outlet opening (56). An evaporator coil (32) is located in the evaporator housing, the flow of refrigerant circulating across the evaporator coil. An evaporator fan (34) is located in the evaporator housing to urge the supply airflow into the evaporator housing via the supply air inlet opening (52), across the evaporator coil (32) and out of the evaporator housing through the supply air outlet opening (56). The evaporator fan (34) can be located upstream or downstream of the evaporator coil (32).

A transport climate control system is disclosed. The system includes a compressor, a motor-generator-rectifier machine, a belt drive connected to the motor-generator-rectifier machine and the compressor, at least one condenser fan, at least one evaporator fan, and a DC to DC converter. The motor-generator-rectifier machine connects to the at least one condenser fan, the at least one evaporator fan, and the DC to DC converter. The motor-generator-rectifier machine includes a motor, a low voltage generator connected to the motor, and a rectifier connected to the low voltage generator. The motor-generator-rectifier machine can provide a first low voltage DC power to the at least one condenser fan, the at least one evaporator fan, and the DC to DC converter. The DC to DC converter can convert the first low voltage DC power to a second low voltage DC power that is different from the first low voltage DC power.

Technologies described herein pertain to delivering power to primary and accessory electrical components associated with a vehicle that is at least partially electrically powered, as well as to a power source of the vehicle itself. To operate one or more of accessory electrical components and deliver power to a vehicle battery, via a power distribution unit, the embodiments facilitate understanding of dynamic power available to the accessory electrical components as well as the vehicle battery, and distributing of the power in a prioritized manner to optimize the system for a most efficient power delivery process, with regards to power needs and power availability. Managing power supplied to a climate control unit that is used in a transport climate control system providing climate control to at least one of an internal space of a vehicle, may be performed by a controller that is electrically connected to at least the climate control unit.

A heating, ventilation, and air conditioning (HVAC) system for a cargo vehicle includes an evaporator, a first door, a condenser, a second door, a freezing room, a refrigerating room, a warming room, and a controller, wherein the controller is configured to control an amount of opening of each of the first internal air and external air door, the second internal air and external air door, the first door, and the second door and an amount of driving of each of the evaporator and the condenser in response to an outside air condition of a vehicle, controlling temperature of each of the freezing room, the refrigerating room, and the warming room.

A cover for a transportation refrigeration unit includes a substantially solid front panel and one or more airflow inlet openings located at a top of the cover to direct an airflow from outside the cover into the transportation refrigeration unit. A refrigerated container system includes a container having a cargo compartment for transportation of a cargo and a transportation refrigeration unit secured to the container and including a refrigeration unit operably connectible to the cargo compartment and configured to direct cooling airflow into the cargo compartment thereby cooling the cargo compartment to a selected temperature. A cover is secured to the refrigeration unit and includes a substantially solid front panel and one or more airflow inlet openings positioned at a top of the cover to direct an inlet airflow from outside the cover into the refrigeration unit.