Abstract: Provided are embodiments for a system and method for performing a battery health self-test protocol. The embodiments can include detecting a transport refrigeration unit (TRU) is connected to standby power, and charging the battery to a known charge level during a charge cycle. Embodiments can also include discharging the battery during a discharge cycle by coupling the battery to a battery test resistor, and calculating battery health assessment information for the battery.

Abstract: 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.

Abstract: A leak detection system includes a sensor assembly (30) having a sensor housing (32), a leak sensor (60), and a 36 collection housing (34). The sensor housing (32) defines a first fluid inlet (40). The leak sensor (60) is disposed within the sensor housing (32). The leak sensor (60) is arranged to provide a signal indicative of a presence of the first fluid within an interior space of the transport refrigeration unit. The collection housing (34) is spaced apart from the sensor housing (32) and defines a second fluid inlet (80).

Abstract: Embodiments are provided for a system configured to provide pre-trip sequence and diagnostics for refrigerant leak sensor. The system includes a sensor, a fan, and a controller. The controller is further configured to validate an operation of the sensor, operate the fan based at least in part on validating the operation of the sensor, and responsive to operating the fan, determine if a leak is present using the sensor. The controller is also configured to perform a refrigeration test, determine if a leak is present using the sensor, and provide an alarm based at least in part on determining the leak is present. Embodiments are also provided for a method for performing a pre-trip sequence and diagnostics for a leak sensor.

Abstract: Provided are embodiments for a system and method for performing a battery health self-test protocol. The embodiments can include detecting a transport refrigeration unit (TRU) is connected to standby power, and charging the battery to a known charge level during a charge cycle. Embodiments can also include discharging the battery during a discharge cycle by coupling the battery to a battery test resistor, and calculating battery health assessment information for the battery.

Abstract: A method for performing a regeneration cycle for regenerating a diesel particulate filter of a transport refrigeration system. The method includes increasing an air intake throttling level of an engine intake air flow by reducing an air control valve area. The method also includes supplementing the temperature increase of the air intake throttling by energizing an engine preheater.

Abstract: 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.

Abstract: A leak detection system includes a sensor assembly (30) having a sensor housing (32), a leak sensor (60), and a 36 collection housing (34). The sensor housing (32) defines a first fluid inlet (40). The leak sensor (60) is disposed within the sensor housing (32). The leak sensor (60) is arranged to provide a signal indicative of a presence of the first fluid within an interior space of the transport refrigeration unit. The collection housing (34) is spaced apart from the sensor housing (32) and defines a second fluid inlet (80).

Abstract: Disclosed is an adapter frame for attaching a transport refrigeration unit (TRU) to a railway car, the adapter frame having a window and a supporting section, the window having a rectangular shape, the supporting section extending from an edge of the window and comprising two or more truss members spanning from an edge of the window to a corresponding edge of the supporting section, wherein the adapter frame is configured for installation between the TRU and the railway car such that a distal end of a protruding evaporator section of the TRU protrudes into the window.

Abstract: Embodiments are provided for a system configured to provide pre-trip sequence and diagnostics for refrigerant leak sensor. The system includes a sensor, a fan, and a controller. The controller is further configured to validate an operation of the sensor, operate the fan based at least in part on validating the operation of the sensor, and responsive to operating the fan, determine if a leak is present using the sensor. The controller is also configured to perform a refrigeration test, determine if a leak is present using the sensor, and provide an alarm based at least in part on determining the leak is present. Embodiments are also provided for a method for performing a pre-trip sequence and diagnostics for a leak sensor.

Abstract: A method for performing a regeneration cycle for regenerating a diesel particulate filter of a transport refrigeration system. The method includes increasing an air intake throttling level of an engine intake air flow by reducing an air control valve area. The method also includes supplementing the temperature increase of the air intake throttling by energizing an engine preheater.

Abstract: A method for determining potential routes for perishable goods is provided comprising: storing container parameters of a container to store the perishable goods, vehicle parameters of a vehicle to transport the perishable goods within the container, transportation refrigeration unit (TRU) parameters of a transportation refrigeration unit (TRU) to control environment conditions within the container, and perishable good requirements for transporting the perishable goods within the container; receiving route parameters, weather parameters, and perishable good parameters, the route parameters including an origination location of the perishable goods, a destination location of the perishable goods, and a route time completion window; determining one or more potential routes in response to the route parameters; and determining predicted energy source consumption by the TRU for each of the one or more potential routes in response to the vehicle parameters, container parameters, TRU parameters, perishable good requir

Abstract: The performance of a transport refrigeration system having a transport refrigeration unit powered by a diesel engine is optimized by matching a capacity output of the transport refrigeration unit to an available shaft power of the diesel engine.

Abstract: A system for testing a particulate filter system includes a filter controller connected to the particulate filter system and a vehicular computer configured to determine at least one engine condition. The filter controller is configured to control a condition of a component of the particulate filter system and the vehicular computer is operatively connected to the filter controller to communicate therewith. The vehicular computer compares the condition of the component of the particulate filter system with the engine condition to determine whether the component of the particulate filter system is functioning properly.

Abstract: A unit, such as a transport refrigeration unit 12, may include a plurality of components arranged in multiple stages. At least a portion of the components 18,20 may be arranged in a serial or parallel manner. A position associated with the plurality of components may be selected to control a load on a power source, such as an engine 30. For example, a position for each of the components may be selected so as to maximize a delivery of available power from the power source to the unit. In some embodiments, one or more controllers 32,34 may measure a parameter associated with the power source and select a position for one or more of the components. In some embodiments, an economized refrigeration cycle may be used. Capacity may be staged from a single stage compression cycle or mode to a multistage compression cycle or mode, with a corresponding increase in capacity via subcooling.

Abstract: A system for testing a particulate filter system includes a filter controller connected to the particulate filter system and a vehicular computer configured to determine at least one engine condition. The filter controller is configured to control a condition of a component of the particulate filter system and the vehicular computer is operatively connected to the filter controller to communicate therewith. The vehicular computer compares the condition of the component of the particulate filter system with the engine condition to determine whether the component of the particulate filter system is functioning properly.

Abstract: The performance of a transport refrigeration system having a transport refrigeration unit powered by a diesel engine is optimized by matching a capacity output of the transport refrigeration unit to an available shaft power of the diesel engine.

Abstract: A method is provided for calibrating an engine throttle position sensor operation of a refrigeration system powered by a fuel fired engine.

Abstract: The performance of a transport refrigeration system (12) having a transport refrigeration unit powered by a diesel engine is optimized by matching a capacity output of the transport refrigeration unit to an available shaft power of the diesel engine. The power consumption of the transport refrigeration may be controlled by selectively limiting refrigerant mass flow through the refrigerant circuit of the transport refrigeration unit in response to an operating engine load and an operating speed of the diesel engine.

Abstract: A multi-compartment transport refrigeration system includes a compressor having suction port, discharge port and intermediate inlet port; a heat rejecting heat exchanger; an economizer heat exchanger having a first refrigerant flow path and a second refrigerant flow path therethrough; a first evaporator expansion device; a first evaporator having an inlet coupled to the first evaporator expansion device and an outlet coupled to a compressor inlet path, the first evaporator for cooling a first compartment of a container; a second evaporator expansion; a second evaporator having an inlet coupled to the second evaporator expansion device, the second evaporator for cooling a second compartment of the container; an economizer expansion device coupled to the first refrigerant flow path, the economizer expansion device directing refrigerant from the first refrigerant flow path to the second refrigerant flow path, the second refrigerant flow path coupled to the intermediate inlet port.