Combustion Imaging and Analysis in a Gasoline Direct Injection Engine University of Oxford

Format:

Conference/Event

Author/Creator:

Wyszynnski, Lukasz P., author.

Conference Name:

SAE 2004 World Congress & Exhibition (2004-03-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2004

Summary:

A single cylinder Direct Injection Spark Ignition (DISI) engine with optical access has been used for combustion studies with both early injection and late injection for stratified charge operation. Cylinder pressure records have been used for combustion analysis that has been synchronised with the imaging. A high speed cine camera has been used for imaging combustion within a cycle, while a CCD camera has been used for imaging at fixed crank angles, so as to obtain information on cycle-by-cycle variations. The CCD images have also been analysed to give information on the quantity of soot present during combustion.Tests have been conducted with a reference unleaded gasoline (ULG), and pure fuel components: iso-octane (a representative alkane), and toluene (a representative aromatic). The results show diffusion-controlled combustion occurring in so-called homogeneous combustion with early injection. The CCD images show substantial cycle-by-cycle variations in combustion, especially in terms of the incandescent soot. The chromatic information in the CCD images has been analysed, so as to obtain estimates of the temperature at different crank angles

Notes:

Vendor supplied data

Publisher Number:

2004-01-0045

Access Restriction:

Restricted for use by site license