Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Atomization and Sprays
Factor de Impacto: 1.262 Factor de Impacto de 5 años: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

Volumes:
Volumen 29, 2019 Volumen 28, 2018 Volumen 27, 2017 Volumen 26, 2016 Volumen 25, 2015 Volumen 24, 2014 Volumen 23, 2013 Volumen 22, 2012 Volumen 21, 2011 Volumen 20, 2010 Volumen 19, 2009 Volumen 18, 2008 Volumen 17, 2007 Volumen 16, 2006 Volumen 15, 2005 Volumen 14, 2004 Volumen 13, 2003 Volumen 12, 2002 Volumen 11, 2001 Volumen 10, 2000 Volumen 9, 1999 Volumen 8, 1998 Volumen 7, 1997 Volumen 6, 1996 Volumen 5, 1995 Volumen 4, 1994 Volumen 3, 1993 Volumen 2, 1992 Volumen 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2018025304
pages 217-240

CHARACTERISTICS OF FREE SPRAY DEVELOPMENT, MIXTURE FORMATION, AND COMBUSTION UNDER HIGH-PRESSURE SPLIT INJECTION

Kang Yang
Jiangsu University
Hirotaka Yamakawa
Mazda Motor Corporation, 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima 730-8670, Japan
Keiya Nishida
Department of Mechanical System Engineering, University of Hiroshima, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
Youichi Ogata
Department of Mechanical System Engineering, University of Hiroshima, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan

SINOPSIS

The objective of this study is to gain an enhanced understanding of the characteristics of free spray development, mixture formation, and combustion under high-pressure split injection. The fuel was injected into a constant volume vessel by a single-hole nozzle with a hole diameter of 0.111 mm. The injection process comprised a pre-injection followed by the main injection. The main injection was carried out either as (i) a single main injection, with injection pressure of either 100 MPa or 160 MPa, or (ii) a split main injection with injection pressure of 160 MPa defined by the mass fraction ratio of 75:25. A high-speed camera was used to observe the spray development under non-evaporation conditions. The tracer LAS technique was used to observe the spray mixture formation process. The diesel spray combustion and soot formation processes were studied using a high-speed video camera and examined by two-color pyrometry. The experimental results revealed that split injection can make the vapor phase more homogeneous. Split injection could enhance the combustion and decrease the soot emissions. The soot evolution process was divided into three parts under the single main injection, but into six parts during the split main injection. The effect of the split injection on the soot evolution process ended at the same time when the injection duration is same.