Transport refrigeration system and method of operation
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.
1. A method of operating a transport refrigeration unit system comprising:
providing a high capacity cooling mode on a user interface;
controlling a cooling rate capacity of the transport refrigeration unit system with an engine that is operable at a nominal high speed and a nominal low speed;
controlling an engine speed of the engine with a controller; and
initiating the high capacity cooling mode through a selection on the user interface, the high capacity cooling mode including operating the engine at a speed greater than the nominal high speed to result in a high capacity cooling rate;
wherein a transport operating mode of the engine includes operation of the transport refrigeration unit system within a temperature control band while the trailer compartment is moving;
wherein the high capacity cooling mode is not available during the transport operating mode.
2. The method of claim 1 , further comprising operating the high capacity cooling mode for a duration of a single temperature change from an ambient temperature to a set point temperature.
3. The method of claim 1 , further comprising operating the engine in an efficiency operating mode that includes the engine operating at a speed less than the nominal low speed.
4. The method of claim 3 , wherein the efficiency operating mode is available during operation of the transport refrigeration unit system within a temperature control band.
5. A transport refrigeration unit system for cooling a trailer compartment, the transport refrigeration unit system comprising:
an engine for controlling a cooling rate capacity, the engine operable at a nominal high speed and a nominal low speed;
a controller in operative communication with the engine to control an engine speed of the engine; and
a user interface in operative communication with the controller, the user interface providing a high capacity cooling mode to a user, wherein initiation of the high capacity cooling mode through a selection on the user interface includes the engine operating at a speed greater than the nominal high speed to result in a high capacity cooling rate;
wherein a transport operating mode of the engine includes operation of the transport refrigeration unit system within a temperature control band while the trailer compartment is moving;
wherein the high capacity cooling mode is not available during the transport operating mode.
6. The transport refrigeration unit system of claim 5 , wherein the user interface is located within a cab of a tractor operatively coupled to the trailer compartment.
7. The transport refrigeration unit system of claim 5 , wherein the user interface is a portable device.
8. The transport refrigeration unit system of claim 5 , wherein the high capacity cooling mode provides a single temperature change from a starting temperature to a set point temperature.
9. The transport refrigeration unit system of claim 8 , wherein the starting temperature is an ambient temperature.
10. The transport refrigeration unit system of claim 5 , further comprising an efficiency operating mode of the engine, wherein operation in the efficiency operating mode includes the engine operating at a speed less than the nominal low speed.
11. The transport refrigeration unit system of claim 10 , wherein the user interface allows a user to initiate the efficiency operating mode.
12. The transport refrigeration unit system of claim 10 , wherein the efficiency operating mode is available during operation of the transport refrigeration unit system within a temperature control band.