Modeling of Unsteady Multiphase Flow in the Intake Manifold of Spark Ignition Engines Laboratoire De Thremodynamique Appliquee Aux Machines ET Thermique, University of Paris VI

Format:

Conference/Event

Author/Creator:

Benyettou, Fadila Maroteaux, author.

Conference Name:

International Congress & Exposition (1991-02-25 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

Experimental studies show that spark ignition engines under unsteady operation are subject to a temporary equivalence ratio excursion. This phenomenon can lead to lean misfiring and/or high pollution levels.In this paper, we propose a model that describes this phenomenon by an unsteady annular dispersed flow with two components, air and fuel (film and droplets).The results show that the modeling reproduces well the equivalence ratio excursions in transient operation, as well as response times comparable to those observed experimentaly. Besides, and although they have a small response time, the droplet population can play a great part into the equivalence ratio excursions. Furthermore, the model analyses the influence of some parameters such as:

Notes:

Vendor supplied data

Publisher Number:

910392

Access Restriction:

Restricted for use by site license