Investigation into the operating range of a dual-direct injection engine fueled with methanol and diesel

Xiaojun Yin, Guangzhao Yue, Junlong Liu, Hao Duan, Qimeng Duan, Hailiang Kou, Ying Wang, Bo Yang and Ke Zeng

Energy, 2023, vol. 267, issue C

Abstract: Dual-fuel combustion mode suffers from poor fuel economy at low load and roar combustion at high load. Dual-fuel direct injection is one of the most promising strategies to control mixing process in a dual-fuel engine. In this paper, dual-fuel direct injection mode was developed by two decoupled injection systems. The experiments were conducted to investigate the operating range with regard to methanol energy substitution ratio (ESR) and engine load on combustion and emissions characteristics of dual-fuel direct injection mode. Results show that as the methanol injection quantity increases, the maximum ESR can reach up to 65.1%, while it is restricted by roar combustion at high engine load. The methanol/diesel dual-direct injection engine could achieve a globally optimized goal at 52.4% ESR with the highest indicated thermal efficiency (ITE) being 43.4%. At low engine load, the inhibition effect of the methanol addition on the combustion phasing and stability becomes more superior. At medium to high loads, the increasing ESR can increase the combustion rate and combustion stability together with decreased NOx emissions. However, the HC and CO emissions of dual direct injection mode are inferior to that of neat diesel mode.

Keywords: Methanol/diesel dual-fuel; Dual-direct injection; Operating range; Combustion and emissions (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223000191
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:267:y:2023:i:c:s0360544223000191

DOI: 10.1016/j.energy.2023.126625

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 ().