Method for reducing fuel consumption
AssigneeCarrier Corporation
InventorSuzankumar Danaiah Gongate
Life of this patent
Estimating the term…
Abstract
A method of operating a component of a transport refrigeration unit (TRU) of a vehicle is provided. The method includes determining whether an engine parameter value of the vehicle exceeds a predefined level, computing a vehicle parameter value from the engine parameter value if the engine parameter value exceeds the predefined level, obtaining a nominal value of the vehicle parameter value for which the component is rated, determining whether the vehicle parameter value is equal to or greater than the nominal value and switching the component off if the vehicle parameter value is equal to or greater than the nominal value.
Claims16
A method of operating a component of a transport refrigeration unit (TRU) of a vehicle, the method comprising:
- determining whether an engine parameter value of an engine of the vehicle exceeds a predefined level;
- computing a vehicle parameter value of the vehicle from the engine parameter value if the engine parameter value exceeds the predefined level;
- obtaining a nominal value of the vehicle parameter value for which the component is rated;
- determining whether the vehicle parameter value is equal to or greater than the nominal value;
- and
- switching the component off if the vehicle parameter value is equal to or greater than the nominal value,
- wherein:
- the computing of the vehicle parameter value comprises computing a speed of the vehicle from the engine parameter value, determining whether the speed of the vehicle is changing and computing the vehicle parameter value if the speed of the vehicle is changing, and
- the component comprises a condenser fan of the TRU, the engine parameter value comprises a revolutions per minute (RPM) of the engine and the vehicle parameter value comprises an air flow due to vehicle motion.
A method of operating a condenser of a transport refrigeration unit (TRU) of a vehicle, the method comprising:
- determining whether revolutions per minute (RPM) of an engine of the vehicle exceeds a predefined level;
- computing an air flow due to motion of the vehicle from the RPM of the engine if the RPM of the engine exceeds the predefined level;
- obtaining a nominal air flow due to motion of the vehicle for which the condenser is rated;
- determining whether the air flow due to motion of the vehicle is equal to or greater than the nominal value;
- and
- switching the condenser off if the air flow due to motion of the vehicle is equal to or greater than the nominal value.
A transport refrigeration unit (TRU) of a vehicle, the TRU comprising:
- a condenser fan;
- and
- a controller configured to switch off the condenser fan in an event a value of an air flow due to motion of the vehicle exceeds a nominal value for which the condenser fan is rated.
Dependencies are inferred from the claim text.