초록 ▼

An process and method for monitoring and selectively implementing an operator selected economy mode in a transport refrigeration system is disclosed. The system includes a microprocessor control which, in response to operator selection of the economy mode, increases the base superheat setting, lower

An process and method for monitoring and selectively implementing an operator selected economy mode in a transport refrigeration system is disclosed. The system includes a microprocessor control which, in response to operator selection of the economy mode, increases the base superheat setting, lowers the engine speed, limits the system current, and reduces the compressor capacity in order to optimize the fuel consumption of the system. The controller further monitors for the presence of an out of range alarm, and issues override commands reversing the superheat, compressor, current limit and engine speed economy mode settings at least until the out of range condition no longer exists.

대표청구항 ▼

[ We claim:] [1.] A process for reducing fuel consumption in a transport refrigeration unit under partial load conditions, said process comprising the steps of:i increasing the desired superheat setting, thereby restricting the electronic expansion valve so as to decrease the mass flow of the refrig

[ We claim:] [1.] A process for reducing fuel consumption in a transport refrigeration unit under partial load conditions, said process comprising the steps of:i increasing the desired superheat setting, thereby restricting the electronic expansion valve so as to decrease the mass flow of the refrigeration unit;ii lowering the current limit of said refrigeration unit to a predetermined set point;iii energizing a unloader so as to lower the displacement of the compressor;iv limiting the engine to low speed; andv selectively overriding said superheat setting, removing the restriction of said current limit to said predetermined set point, deenergizing said loader, and removing the limit to said low engine speed in the event of an out of range alarm.