Image Processing Applied to Flame Propagation and Ignition Delay Measurements in a Rapid Compression Machine Petróleo Brasileiro S.A. - PETROBRAS

Format:

Conference/Event

Author/Creator:

Villela, Villela, author.

Contributor:

Botero, Sergio William

Braga, Calos Valois M.

Braga, Leonardo C.

Braga, Sergio L.

Egúsquiza, Julio César

Machado, Guilherme Bastos

Conference Name:

22nd SAE Brasil International Congress and Display (2013-10-07 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

Regarding fuels research and development, some preliminary studies - low cost and short time - can be conducted before the traditional engine tests - more expensive and time consuming. Therefore, experimental apparatus, such as a rapid compression machine (RCM) and specific methodologies, such as imaging techniques, are very useful in order to simulate engine combustion with simplicity, agility and flexibility, reducing development time and costs.Imaging techniques allow flame front propagation and ignition delay analysis, which are important parameters to understand fuel performance in engines and also to improve fuel modeling in engine simulation softwares.A RCM was adapted to operate in a spark ignition engine mode. It was used to obtain high-speed photos of flame propagation and ignition delay. Contour plots of the flame front profiles were obtained in successive frames to analyze the flame development with gasoline-ethanol blends. Based on a software code, it was determined the flame size in each frame. The flame area, in pixels and the frame ratio were previously established. Then, it was possible to calculate the flame growth ratio, in pixels per frame. The results were compared to published propagation speed data

Notes:

Vendor supplied data

Publisher Number:

2013-36-0296

Access Restriction:

Restricted for use by site license