Experimental investigation of a novel combined rapid compressionignition combustion and solid oxide fuel cell system format operating on diesel

Andrew Ahn, Thomas Stone Welles, Benjamin Akih-Kumgeh, Ryan J. Milcarek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Climate change concerns have forced the automotive industry to develop more efficient powertrain technologies, including the potential for fuel cell systems. Solid oxide fuel cells (SOFCs) demonstrate exceptional fuel flexibility and can operate on conventional, widely available hydrocarbon fuels with limited requirements for fuel reformation. Current hybrid powertrains combining fuel cell systems with internal combustion engines (ICEs) fail to mitigate the disadvantages of requiring fuel reformation by placing the engine downstream of the fuel cell system. This work, thus investigates the upstream placement of the engine, eliminating the need for fuel processing catalysts and the heating of complex fuel reformers. The ICE burns a fuel-rich mixture through rapid compression ignition, performing partial oxidation fuel reformation. To test the feasibility of a fuel cell system operating on such ICE exhaust, chemical kinetic model simulations were performed, creating model exhaust containing ~43.0% syngas. A micro-Tubular SOFC (T-SOFC) was tested for power output with this exhaust, and generated ~730 mW/cm2 (~86% of its maximum output obtained with pure hydrogen fuel). Combustion testing was subsequently performed in a test chamber, and despite insufficient equipment limiting the maximum pressure of the combustion chamber, began to validate the model. The exhaust from these tests contained all of the predicted chemical species and, on average, ~21.8% syngas, but would have resembled the model more closely given higher pressures. This work examines the viability of a novel combined ICE and fuel cell hybrid system, displaying potential for a more cost-effective/efficient solution than current fuel cell systems.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME 2021 Power Conference, POWER 2021
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885109
DOIs
StatePublished - 2021
EventASME 2021 Power Conference, POWER 2021 - Virtual, Online
Duration: Jul 20 2021Jul 22 2021

Publication series

NameAmerican Society of Mechanical Engineers, Power Division (Publication) POWER
Volume2021-July

Conference

ConferenceASME 2021 Power Conference, POWER 2021
CityVirtual, Online
Period7/20/217/22/21

ASJC Scopus subject areas

  • Mechanical Engineering
  • Energy Engineering and Power Technology

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