Examination of a Methane/Diesel RCCI Engine Using Pele: Preprint

Research output: Contribution to conferencePaper


Multi-fuel, advanced injection strategies have become increasingly promising as a strategy to mitigate the emissions generated from internal combustion engines. By carefully controlling the combustion phasing in-cylinder, these new multi-pulse, multi-fuel injection strategies are able to burn in the low-temperature combustion regime where both NOx and soot are not readily produced, reducing the need for extensive exhaust gas recirculation systems. In this study, we examine a reactivity-controlled compression ignition (RCCI) strategy that uses an early pre-filled methane-air mixture with low turbulence background as the low-reactivity fuel and a direct injection of four discrete dodecane jets as a surrogate for the high-reactivity diesel fuel. We use the Pele software suite, a highly optimized, exascale-ready, adaptive mesh refinement codebase to perform high-resolution numerical simulations of a scaled down, single cylinder from the RCCI engine. Here, we resolve the ignition kernels down to micrometer scales and present several statistical quantities evaluating the development of the flow and detailing the onset of ignition and subsequent flame development. Particular attention is paid to the conditions surrounding the onset of the first ignition kernels and discussing what led to the development of those conditions.
Original languageAmerican English
Number of pages13
StatePublished - 2023
Event13th U.S. National Combustion Meeting - College Station, Texas
Duration: 19 Mar 202322 Mar 2023


Conference13th U.S. National Combustion Meeting
CityCollege Station, Texas

NREL Publication Number

  • NREL/CP-2C00-84700


  • CFD
  • combustion
  • compression ignition engine
  • exascale
  • Pele
  • RCCI


Dive into the research topics of 'Examination of a Methane/Diesel RCCI Engine Using Pele: Preprint'. Together they form a unique fingerprint.

Cite this