2015
DOI: 10.1016/j.ijhydene.2015.05.006
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Effects of hydrogen and oxygen enrichment on performance and emissions of an SI engine under idle operating condition

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Cited by 27 publications
(5 citation statements)
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“…Large amounts of NO formation under low engine speed conditions accelerated the backward reactions, resulting in a decrease after the peak value. Hydrogen additions in fossil fuel contributed to more NO x formation, as demonstrated by Karagöz [51] under idle conditions that NO x emissions increase was 4.6%, 6.2%, 27.7% and 44.6% compared to pure gasoline when hydrogen additions were 5%, 8%, 10% and 15%, respectively. In order to decrease NO formation during hydrogen combustion, spark timing should be slightly retarded for low speed conditions to decrease the maximum in-cylinder temperature although it would lead to power losses.…”
Section: Emissions Characteristicsmentioning
confidence: 83%
“…Large amounts of NO formation under low engine speed conditions accelerated the backward reactions, resulting in a decrease after the peak value. Hydrogen additions in fossil fuel contributed to more NO x formation, as demonstrated by Karagöz [51] under idle conditions that NO x emissions increase was 4.6%, 6.2%, 27.7% and 44.6% compared to pure gasoline when hydrogen additions were 5%, 8%, 10% and 15%, respectively. In order to decrease NO formation during hydrogen combustion, spark timing should be slightly retarded for low speed conditions to decrease the maximum in-cylinder temperature although it would lead to power losses.…”
Section: Emissions Characteristicsmentioning
confidence: 83%
“…Karagöz et al [15] investigated the effect of hydrogen enrichment on cyclic variations, emissions and performance of the SI gasoline engine under idle operating conditions. The hydrogen-oxygen gas mixture was used as an additional gasoline enhancer.…”
Section: Introductionmentioning
confidence: 99%
“…On-board solutions need small-scale devices, which are easy to start and effective in a wide range of load. Therefore, solutions like water electrolyzers [15,16,[18][19][20][21]; gasoline [14], ethanol [22] or ammonia [23] exhaust gases thermal reformers; or plasma and catalysis integrated technology [24] could be taken into account.…”
Section: Introductionmentioning
confidence: 99%
“…Jingding et al 22 investigated the emission formation mechanism of a hydrogen–gasoline engine and observed that HC and CO emissions were significantly reduced by supplying hydrogen during the lean burn. Karagöz et al 23 observed the performance and emissions of gasoline engines by varying the hydrogen energy fractions. The results revealed an improvement in the cyclic variation, indicated mean effective pressure, ITE, indicated specific fuel consumption, and peak temperature with an increase in hydrogen blending fractions.…”
Section: Introductionmentioning
confidence: 99%
“…Jingding et al 22 investigated the emission formation mechanism of a hydrogen− gasoline engine and observed that HC and CO emissions were significantly reduced by supplying hydrogen during the lean burn. Karagoz et al 23 observed the performance and emissions of gasoline engines by varying the hydrogen energy fractions.…”
Section: Introductionmentioning
confidence: 99%