Review of multi-fuel Engine Concepts and Numerical Modeling of In-Cylinder Flow Processes in Direct injection Engines

The paper reviews the literature for methods of increasing fuel flexibility in diesel engines over a range of fuel properties representing alcohols to high viscosity diesels. It was conceived that the details of fuel-charge within the engine cylinder would help evaluate the requirements for multi-fuel engine design. It is therefore, attempted to model in-cylinder flows, fuel-air mixing and fuel property effects. The preliminary results of these calculations are presented.