Effect of injection strategy on cold start firing, combustion and emissions of a LPG/methanol dual-fuel spark-ignition engine

Changming Gong, Zilong Liu, Hang Su, Yulin Chen, Junbo Li and Fenghua Liu

Energy, 2019, vol. 178, issue C, 126-133

Abstract: The spark ignition (SI) methanol engine is particularly difficult for cold start at low ambient temperature. Adding liquefied petroleum gas (LPG) can ensure a successful cold start of SI methanol engine. Based on a single-cycle fuel injection strategy, the effects of the amount and injection timings of methanol and LPG per cycle were experimentally investigated on cold start firing and emissions of a LPG/methanol dual-fuel SI engine. The results show that the minimum amount of LPG injected per cycle is the key factor to determine the reliable firing of LPG/methanol engines at low ambient temperatures. In order to form an ideal mixture in the firing cycle, 300 °CA injection interval between methanol and LPG is feasible to be used. Fuel injection parameters have great influences on the HC emissions, which are 74.4% lower under critical firing than that of misfiring mode. By altering injection parameters, unburned methanol shows opposite tendencies with formaldehyde emissions and similar tendencies with HC emissions.

Keywords: Spark-ignition engine; LPG/Methanol dual-fuel; Cold start; Single-cycle fuel injection; Firing; Emission (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544219307789
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:178:y:2019:i:c:p:126-133

DOI: 10.1016/j.energy.2019.04.145

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 ().