Hybrid internal combustion engine based auxiliary power unit

Vladimir Yuhimenko, Dmitry Baimel, Moshe Sitbon, Moshe Averbukh, Simon Lineykin, Alon Kuperman

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The brief presents some principles of the ON/OFF operational strategy applied to energy management of a hybrid internal combustion engine (ICE) based auxiliary power unit (APU). It is shown that significant reduction of fuel consumption (78% for the example system presented) and maintenance expenses (80% operation time decrease was attained by the system) may be achieved by such a strategy, shifting the system operation point towards corresponding optimal region. The side effect of aggravated amount of starting events is cured by employing an actively balanced supercapacitor (SC)-based emergency starter (SCS). The SCS operates as short-time energy storage device, charging from the battery at a low rate and then providing a current burst required for proper internal combustion engine starting. Current sensorless method of automatic connection (based on bus voltage sensing) and disconnection (based on sensing the voltage across bidirectional MOSFET-based switch) of the SCS is also proposed. The proposed circuitry, successfully validated by experiments, may be arbitrarily scaled up or down according to application rating.

Original languageEnglish
Article number438
Issue number4
StatePublished - 1 Apr 2020


  • Auxiliary power unit
  • Energy management
  • Internal combustion engine
  • Specific fuel consumption
  • Supercapacitors

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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