Comparison of Measured and Predicted Combustion Characteristics of a Four-Valve S.I. Engine Ricardo North America

Format:

Conference/Event

Author/Creator:

Wahiduzzaman, Syed, author.

Conference Name:

International Congress & Exposition (1993-03-01 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1993

Summary:

An Place of publication not identified combustion model has been developed for application in phenomenological engine simulations. The model is based on a turbulent flame concept, linked to an in-cylinder flow and turbulence calculation. The flame front is assumed to spread from the spark plug and propagate through the cylinder, while interacting with the combustion chamber geometry. The model predictions were compared to combustion rate measurements made in a single cylinder four valve passenger car engine. The data spanned a wide range of operating conditions, from an idle timing sweep, to part load EGR and mixture ratio sweeps, to a wide open throttle speed sweep. The results of the comparisons showed a generally good agreement. Some difficulties were encountered at idle, where cycle-to-cycle variability makes modeling difficult especially at early timing settings. Also, some improvements can still be made in refining the geometrical representation of the combustion chamber, which affects the predicted shapes of the heat release curves

Notes:

Vendor supplied data

Publisher Number:

930613

Access Restriction:

Restricted for use by site license