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ELECTRIC TRANSPORT REFRIGERATION UNIT WITH TEMPERATURE-BASED DIESEL OPERATION

  • US 20110301762A1
  • Filed: 06/03/2010
  • Published: 12/08/2011
  • Est. Priority Date: 06/03/2010
  • Status: Active Grant
First Claim
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1. A method of operating a transport refrigeration unit that is operable to regulate a temperature of a cargo space, the method comprising:

  • providing a controller;

    driving a refrigerant compressor of the transport refrigeration unit with an internal combustion engine to compress a refrigerant defining an engine operating state of the transport refrigeration unit;

    driving the refrigerant compressor of the transport refrigeration unit with an electric motor to compress the refrigerant defining a motor operating state of the transport refrigeration unit;

    sensing the temperature of the cargo space;

    receiving into the controller a signal indicative of the temperature of the cargo space;

    determining the temperature of the cargo space using the controller; and

    switching between the engine operating state and the motor operating state in response to a signal generated by the controller based on the temperature of the cargo space.

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