Parallel Session 7 – BIOEN Mobility and End Use

Wednesday 23 October 2024, 16.00-17.30 BRT

Moderator: Luiz Augusto Horta Nogueira (UNIFEI, Brazil)

Speakers:

  • Ronaldo Domingues Mansano (USP, Brazil): Plasma assisted ignition for application in internal combustion engines.
  • Guenther Carlos Krieger Filho (USP, Brazil): Experimental and numerical investigation of ethanol spray combustion for internal combustion engines
  • Roberto Matarazzo Braun (Toyota do Brasil): The role of biofuels for automotive industry decarbonization.
  • Erwin Karl Franieck (SAE4Mobility/UNICAMP, Brazil): MiBI-Made in Brazil Integrated, a full network to increase local added value.
  • Clayton Barcelos Zabeu (Instituto Mauá, Brazil): New perspectives of ethanol as fuel for heavy-duty engines.

Selected highlights:

  • There are many paths to carbon neutrality in transport, with diverse solutions for diverse customers and circumstances. Each region has unique market requirements, and at the same time has a different renewable energy situation. In Brazil, the combination of hybrid vehicles and biofuels is a practical, affordable and sustainable scenario.
  • For high-performance, lean-burn and low-emission engines, increasing the ignition volume and reducing the combustion temperature should be aimed at. Microwave assisted ignition has the potential for both space ignition and low temperature combustion. With further development of power semiconductors, the application in vehicles is foreseeable.
  • Since compression ignition (‘diesel’) engines offer higher efficiency and are better suited for heavy-duty applications, the ideal scenario would be to use ethanol in compression ignition engines. However, it is not simple to use ethanol (or methanol) in diesel engines. There are three options: (1) convert the engine to a spark ignited (‘Otto’) engine; (2) dual fuel operation (diesel injection to initiate the combustion); (3) use of ignition promotors and lubricity improvers (Scania approach); (4) use of thermal insulation in the combustion chamber; (5) use of hot spots for ethanol or methanol ignition. Nevertheless, many of these solutions still exhibit low technological maturity and require further developments and validations.