Comparative study of the spray and combustion characteristics of diesel engine dual injection with cross and horizontally opposed settings

Zhanming Chen, Xiaorui Xu, Haibin He, Guoqing Chai, Xiaochen Wang, Jie Wu, Lei Wang, Hua Lou and Hao Chen

Energy, 2025, vol. 318, issue C

Abstract: This study aims to clarify the spray and combustion characteristics of dual diesel jet collisions. Two spray angles, 90° and 180°, were analyzed using the schlieren method in a constant volume combustion chamber. The injection pressures were set at 60 MPa, 80 MPa, and 100 MPa, while the ambient pressure was maintained at 4 MPa, and the ambient temperatures were set at 500 K and 800 K for the spray and combustion analyses, respectively. The results indicated that, compared to the 90° spray angle, the diffusion radius, gas spray area, and liquid spray area of 180° spray angle decreased. This reduction is primarily attributed to the higher momentum loss rate of the impact spray at greater injection angles. Regarding combustion characteristics, as the injection angle increased, the flame lift-off length, flame area, and soot emissions from the dual diesel combustion exhibited a decreasing trend. These findings suggest that altering the arrangement angle of the dual injectors can effectively improve the atomization, ignition, combustion, and emission characteristics of the fuel in the cylinder.

Keywords: Diesel jet collision; Dual injection; Spray characteristics; Combustion characteristics (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S036054422500581X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:318:y:2025:i:c:s036054422500581x

DOI: 10.1016/j.energy.2025.134939

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().