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WASTE HEAT RECOVERY APPARATUS AND METHOD FOR CONTROLLING WASTE HEAT RECOVERY APPARATUS

  • US 20180266360A1
  • Filed: 03/15/2018
  • Published: 09/20/2018
  • Est. Priority Date: 03/17/2017
  • Status: Active Grant
First Claim
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1. A waste heat recovery apparatus comprising:

  • an evaporator configured to turn a liquid-phase refrigerant into steam through heat exchange with exhaust gas of an internal combustion engine;

    an expander configured to expand a gas-phase refrigerant passed through the evaporator to recover heat energy;

    a condenser configured to condense the gas-phase refrigerant passed through the expander such that the gas-phase refrigerant returns to the liquid-phase refrigerant;

    a liquid-phase refrigerant supply device configured to supply the liquid-phase refrigerant delivered from the condenser, to the evaporator; and

    a control device configured to control the liquid-phase refrigerant supply device so as to adjust an amount of the liquid-phase refrigerant to be supplied to the evaporator,wherein the control device is configured to control the liquid-phase refrigerant supply device so as to bring the supply of the liquid-phase refrigerant by the liquid-phase refrigerant supply device into a stopped state at least until an amount of the liquid-phase refrigerant stored in the evaporator becomes equal to or lower than a predetermined low refrigerant amount, during operation of the internal combustion engine.

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