CFD-Driven Preliminary Investigation of Ethanol-Diesel Diffusive Combustion in Heavy-Duty Engines 2019-01-2192
The introduction of renewable alcohols as fuels for heavy-duty engines may play a relevant role for the reduction of the carbon footprint of the transport sector. The direct injection of ethanol as main fuel and diesel as pilot fuel in the engine combustion chamber through two separate injectors may allow good combustion controllability over the entire engine operating range by targeting diffusive combustion. Closed-cycle combustion simulations have been carried out using AVL FIRE coupled to AVL TABKIN for the implementation of the Flamelet Generated Manifold (FGM) chemistry reduction technique in order to investigate the influence of the injection system geometry and the injection strategy of pure ethanol and diesel fuel on ignition characteristics and combustion at different operating conditions.
Citation: Giramondi, N., Mihaescu, M., Erlandsson, A., and Jäger, A., "CFD-Driven Preliminary Investigation of Ethanol-Diesel Diffusive Combustion in Heavy-Duty Engines," SAE Technical Paper 2019-01-2192, 2019. Download Citation
Nicola Giramondi, Mihai Mihaescu, Anders Christiansen Erlandsson, Anders Jäger
KTH Royal Institute of Technology, Scania CV AB
2019 JSAE/SAE Powertrains, Fuels and Lubricants