Analysis of the effect of the hydrogen as main fuel on the performance of a modified compression ignition engine with water injection

J. Serrano, F.J. Jiménez-Espadafor and A. López

Energy, 2019, vol. 173, issue C, 911-925

Abstract: The currently available technologies for controlling emissions in internal combustion engines may not be sufficient to achieve the very low emission levels imposed by future legislation. The utilisation of gaseous hydrogen (H2) in CI engines is a viable option for simultaneously solving the problems of energy efficiency improvements and emissions reduction, including greenhouse gases (GHG). This paper is a part of a wider study devoted to the analysis of dual combustion (diesel-hydrogen) in internal combustion engines. In this paper, a diesel engine is modified to run using a hydrogen-diesel mixture as fuel, with diesel fuel used alone as the ignition source. This mode of operation is studied for two speeds and various injection strategies, with hydrogen as the main fuel and diesel for ignition, up to a hydrogen/diesel mass ratio of 1.75. In order to control NOx emissions, intake self-ignition and combustion knocking, water was injected into the intake manifold (WI). The test results show that smoke emissions decrease with an increase in the hydrogen/diesel ratio. Conversely, NOx emissions increase with the hydrogen fraction, but water injection produces a reduction in the NOx emissions of around 50%. An almost flat efficiency of close to 40% is observed.

Keywords: Hydrogen; Water injection; Diesel engine; Dual fuel; Emissions; Heat release rate (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544219303159
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:173:y:2019:i:c:p:911-925

DOI: 10.1016/j.energy.2019.02.116

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 ().