High-Efficiency Clean-Combustion Strategies

Ducted Fuel Injection (DFI) for Soot Mitigation

  • Direct-injection compression-ignition (diesel) engines have high thermal efficiency (~50%), but the stratified combustion process fosters soot formation, a harmful emission.
  • Diesel Particulate Filters reduce engine efficiency.
  • DFI (Ducted Fuel Injection) is a new breakthrough concept inspired by a Bunsen burner that aims to enhance air-fuel mixing and foster leaner combustion, which mitigates soot formation.
  • We are using state of the art optical diagnostics to research the governing physics of DFI and thereby optimize duct design.