Stratified Mixture Formation and Piston Surface Wetting in a DISI Engine Ford Motor Company

Format:

Conference/Event

Author/Creator:

Han, Zhiyu, author.

Conference Name:

SAE Powertrain & Fluid Systems Conference & Exhibition (2002-10-21 : San Diego, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2002

Summary:

Development and research of a stratified-charge direct-injection SI combustion system was carried out at Ford. This paper presents the multidimensional engine CFD modeling analysis of mixture formation and piston surface wetting under the stratified-charge conditions. The effect of various design and operating parameters including piston shape, spray cone angle, swirl ratio, injection timing, engine speed and load on charge stratification and piston-wetting due to spray impingement were studied. The results led to design changes that warranted improvement of engine functions. Of particular interest, the model was shown to be capable to predict piston surface wetting and a qualitative correlation was found between the amount of the remaining liquid fuel on the piston surface and the engine-out smoke number

Notes:

Vendor supplied data

Publisher Number:

2002-01-2655

Access Restriction:

Restricted for use by site license