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Hybrid Internal Combustion Engine based Auxiliary Power Unit.

Vladimir Yuhimenko1, Dmitry Baimel2, Moshe Sitbon3

  • 1School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel.

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|April 25, 2020
PubMed
Summary
This summary is machine-generated.

An ON/OFF strategy for hybrid internal combustion engine (ICE) auxiliary power units (APUs) significantly cuts fuel use and maintenance. A supercapacitor starter (SCS) manages frequent engine starts, optimizing APU energy management.

Keywords:
auxiliary power unitenergy managementinternal combustion enginespecific fuel consumptionsupercapacitors

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Area of Science:

  • Energy Systems Engineering
  • Automotive Engineering
  • Electrical Engineering

Background:

  • Hybrid auxiliary power units (APUs) often operate inefficiently, leading to high fuel consumption and maintenance.
  • Optimizing the operational strategy is crucial for improving the performance and longevity of internal combustion engine (ICE) based APUs.

Purpose of the Study:

  • To introduce and evaluate an ON/OFF operational strategy for hybrid ICE-based APUs.
  • To demonstrate significant reductions in fuel consumption and maintenance expenses.
  • To present a supercapacitor-based starter (SCS) solution for managing increased engine start events.

Main Methods:

  • Implementation of an ON/OFF operational strategy to shift the APU operation point to optimal regions.
  • Development and integration of an actively balanced supercapacitor (SC)-based emergency starter (SCS).
  • Proposal of a current sensorless method for automatic SCS connection and disconnection using bus voltage sensing.

Main Results:

  • Achieved a 78% reduction in fuel consumption in the example system.
  • Attained an 80% decrease in APU operation time, reducing maintenance needs.
  • Successfully validated the proposed circuitry and strategy through experimental testing.

Conclusions:

  • The ON/OFF operational strategy offers substantial benefits for hybrid ICE APU energy management.
  • The supercapacitor starter (SCS) effectively mitigates the challenge of frequent starts associated with the ON/OFF strategy.
  • The proposed sensorless connection/disconnection method and scalable circuitry provide a practical solution for APU optimization.