Multi-Dimensional Modeling of Gas Exchange and Fuel-Air Mixing Processes in a Direct-Injection, Gas Fueled Engine Politecnico di Milano

Format:

Conference/Event

Author/Creator:

Lucchini, Lucchini, author.

Contributor:

D'Errico, Gianluca

Fiocco, Marco

Conference Name:

10th International Conference on Engines & Vehicles (2011-09-11 : Naples, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Direct-injection technology represents today a very interestingsolution to the typical problems that are generally encountered inSI, gas-fueled engines such as reduced volumetric efficiency,backfire and knock. However, development of suitable injectionsystems and combustion chamber geometry is necessary to optimizethe fuel-air mixing and combustion processes. To this end, CFDmodels are widely applied even if the influence of the meshstructure, numerical and turbulence models on the computed resultsare still matter of investigation.In this work, a numerical methodology for the simulation of thegas exchange and injection processes in gas-fueled engines wasdeveloped within the Lib-ICE framework, which is a set of librariesand applications for IC engine modeling developed using theOpenFOAM® technology. The gas exchange and fuel injection processeswere simulated into a four-valve, pent-roof hydrogen-fueled enginewith optical access. The availability of experimental optical dataof charge motions within the cylinder and equivalence ratiodistributions during injection allowed a detailed validation of theproposed approach. In particular the effects of differentturbulence models and mesh structures were investigated

Notes:

Vendor supplied data

Publisher Number:

2011-24-0036

Access Restriction:

Restricted for use by site license