Effect of advanced injection timing on emission characteristics of diesel engine running on natural gas
There has been a growing concern on the emission of greenhouse gases into the atmosphere, whose consequence is global warming. The sources of greenhouse gases have been identified, of which the major contributor is the combustion of fossil fuel. Researchers have intensified efforts towards identifyi...
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Published in | Renewable energy Vol. 32; no. 14; pp. 2361 - 2368 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.11.2007
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | There has been a growing concern on the emission of greenhouse gases into the atmosphere, whose consequence is global warming. The sources of greenhouse gases have been identified, of which the major contributor is the combustion of fossil fuel. Researchers have intensified efforts towards identifying greener alternative fuel substitutes for the present fossil fuel. Natural gas is now being investigated as potential alternative fuel for diesel engines. Natural gas appears more attractive due to its high octane number and perhaps, due to its environmental friendly nature. The test results showed that alternative fuels exhibit longer ignition delay, with slow burning rates. Longer delays will lead to unacceptable rates of pressure rise with the result of diesel knock. This work examines the effect of advanced injection timing on the emission characteristics of dual-fuel engine. The engine has standard injection timing of 30° BTDC. The injection was first advanced by 5.5° and given injection timing of 35.5° BTDC. The engine performance was erratic on this timing. The injection was then advanced by 3.5°. The engine performance was smooth on this timing especially at low loading conditions. The ignition delay was reduced through advanced injection timing but tended to incur a slight increase in fuel consumption. The CO and CO
2 emissions were reduced through advanced injection timing. |
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ISSN: | 0960-1481 1879-0682 |
DOI: | 10.1016/j.renene.2006.12.006 |