放。In view of high cyclic variation and HC emissions of the lean-burn gasoline engine at idle conditions, an experimental investigation was carried out on a gasoline engine equipped with an electrical controlled hydrogen injection system. The hydrogen volume fraction in the total intake of 3% was adopted through adjusting hydrogen injection duration to study the effect of hydrogen enrichment on combustion and emission characteristics of a lean-burn gasoline engine at idle. The test results demonstrated that the indicated thermal efficiency was improved; flame development period and rapid burning duration were shortened after hydrogen enrichment. When the excess air ratio was 1.3, the coefficient of variation in indicated mean effective pressure was dropped from 33.9% of the original engine to 13.7% of the 3% hydrogen-enriched engine. Under idle and lean conditions, the addition of hydrogen was effective on improving HC, CO and NOx emissions performance of the SI engine.
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汪硕峰,纪常伟,张擘,张旻玥,罗建斌,范伯元.混氢对稀燃汽油机怠速性能的影响试验[J].农业机械学报,2010,41(7):1-5. Hydrogen Enrichment on the Performance of a Lean-burn Gasoline Engine at Idle[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(7):1-5.