An application of digital image processing techniques to the characterization of liquid petroleum gas (LPG) spray

Autor:	S L Cai, Bo Yan Xu, Y. L. Qi
Rok vydání:	2006
Předmět:	Materials science Applied Mathematics Acoustics Nozzle Injector Penetration (firestop) Combustion Fuel injection law.invention Spray nozzle law parasitic diseases Digital image processing Instrumentation Engineering (miscellaneous) Schlieren photography
Zdroj:	Measurement Science and Technology. 17:3229-3236
ISSN:	1361-6501 0957-0233
DOI:	10.1088/0957-0233/17/12/005
Popis:	To control fuel injection, optimize combustion and reduce emissions for LPG (liquefied petroleum gas) engines, it is necessary and important to understand the characteristics of LPG sprays. The present work investigates the geometry of LPG sprays, including spray tip penetration, spray angle, projected spray area and spray volume, by using schlieren photography and digital image processing techniques. Two types of single nozzle injectors were studied, with the same nozzle diameter, but one with and one without a double-hole flow-split head. A code developed to analyse the results directly from the digitized images is shown to be more accurate and efficient than manual measurement and analysis. Test results show that a higher injection pressure produces a longer spray tip penetration, a larger projected spray area and spray volume, but a smaller spray cone angle. The injector with the double-hole split-head nozzle produces better atomization and shorter tip penetration at medium and late injection times, but longer tip penetration in the early stage.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3c749373f7a74e0a05908771cbd5e126 https://doi.org/10.1088/0957-0233/17/12/005 Zobrazit plný text záznamu