农业机械学报2012，Vol.43Issue(5)：22-26,5.DOI:10.6041/j.issn.1000-1298.2012.05.004
混氢改善汽油机低怠速性能研究
Effect of Hydrogen Addition on Improving Low Idle Speed Performance of SI Engine
摘要
Abstract
An experiment was carried out on a four-cylinder spark-ignited (SI) gasoline engine to investigate the effect of hydrogen addition on the engine performance at low idle speed conditions. The engine was run at three idle speeds of 800 r/min, 700 r/min and 600 r/min. At the specified idle speed and stoichiometric conditions, the hydrogen volumetric fraction in the total intake was gradually increased from 0 to about 6%. The experimental results showed that the engine fuel energy flow rate was.reduced from 30. 8 MJ/h at the idle speed of 800 r/min and a hydrogen volumetric fraction in the intake of 0 to 18. 6 MJ/h at the idle speed of 600 r/min and a hydrogen volumetric fraction in the intake of 6. 0%. For different idle speeds, the engine combustion duration was shortened, cyclic variation was eased and HC, CO and N0x emissions were decreased with the increase of hydrogen volumetric fraction in the intake. All in all, the addition of hydrogen was effective for enhancing the engine performance at tow idle speed conditions.关键词
汽油机/混氢/怠速/燃烧/排放Key words
Gasoline engine/ Hydrogen/ Idle/ Combustion/ Emissions分类
能源科技引用本文复制引用
汪硕峰,纪常伟,焦磊,张旻玥,张擘,黄霄楠..混氢改善汽油机低怠速性能研究[J].农业机械学报,2012,43(5):22-26,5.基金项目
国家自然科学基金资助项目(50976005) （50976005）
