Experimental investigation of the effects of hydrogen enhanced combustion in Si and Ci engines on performance and emissions

dc.contributor.authorZammit, G.
dc.contributor.authorFarrugia, M.
dc.contributor.authorGhirlando, R.
dc.date.accessioned2014-12-15T07:40:49Z
dc.date.available2014-12-15T07:40:49Z
dc.date.issued2012
dc.description.abstractPaper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_ZA
dc.description.abstractHydrogen enhanced combustion (HEC) is promoted as an end-user add-on that has the capability of reducing both engine tailpipe emissions and fuel consumption. An experimental investigation was carried out to measure the effects of HEC in typical engines through laboratory dynamometer testing. Three engines – (1) a carburetted petrol engine, (2) a fuel injected petrol engine and (3) a diesel engine – were tested to investigate the effects of adding hydrogen to the air intake of the engines and measure the effects on performance and emissions (HC, CO and CO2). The engines were tested at different engine speeds and loads to simulate a wide range of operating conditions. The hydrogen was produced from the electrolysis of a solution of distilled water and sodium hydroxide using two different electrolyser designs. The electrolyser constructions were suitable for automotive applications, that is, small in size and consuming current within the capability of a typical car alternator. Both the hydrogen and oxygen that were produced by electrolysis were added to the engine‘s intake during the tests. Results showed that the addition of HHO is most effective in stabilizing and enhancing the combustion of lean air-fuel mixtures inside the petrol injected engine, allowing for lower HC, CO and CO2 emissions. Thus hydrogen enhanced combustion could play a role in stabilizing lean burn petrol engines.en_ZA
dc.description.librariandc2014en_ZA
dc.format.extent10 pagesen_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationZammit, G, Farrugia, M & Ghirlando, R 2012, Experimental investigation of the effects of hydrogen enhanced combustion in Si and Ci engines on performance and emissions, Paper presented to the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_ZA
dc.identifier.isbn9781868549863
dc.identifier.urihttp://hdl.handle.net/2263/43012
dc.language.isoenen_ZA
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_ZA
dc.relation.ispartofHEFAT 2012en_US
dc.rightsUniversity of Pretoriaen_ZA
dc.subjectHydrogen enhanced combustionen_ZA
dc.subjectHECen_ZA
dc.subjectLaboratory dynamometer testingen_ZA
dc.subjectCarburetted petrol engineen_ZA
dc.subjectFuel injected petrol engineen_ZA
dc.subjectDiesel enginesen_ZA
dc.subjectAdding hydrogen to the air intake of the engineen_ZA
dc.subjectElectrolyser designsen_ZA
dc.subjectStabilizing lean burn petrol enginesen_ZA
dc.titleExperimental investigation of the effects of hydrogen enhanced combustion in Si and Ci engines on performance and emissionsen_ZA
dc.typePresentationen_ZA

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
zammit_experimental_2014.pdf
Size:
495.98 KB
Format:
Adobe Portable Document Format
Description:
Presentation

License bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: