农业机械学报2011，Vol.42Issue(1)：12-15,94,5.
稀燃纯氢发动机怠速燃烧与循环变动试验
Combustion and Cycle-by-cycle Variation of Pure Hydrogen-fueled Spark Ignition Engine at Idle and Lean Conditions
摘要
Abstract
Experimental study focusing on the combustion and cyclic variation characteristics of a pure hydrogen-fueled engine at idle and lean conditions was introduced. The experiment was carried out on a modified four-cylinder spark-ignition engine equipped with an electronic controlled hydrogen injection system. The test results showed that when excess air ratio was varied within 2. 08 to 3. 20, the engine original electronic control unit could maintain idle speed of the pure hydrogen-fueled engine at its target value (790 r/min) by automatic adjusting the spark timing and idle bypass valve opening. The engine cooling loss was decreased with the increase of excess air ratio. However, the cyclic variation in indicated mean effective pressure and combustion duration were slightly raised when the engine was gradually leaned out. When excess air ratio rose from 2. 08 to 3. 20, the engine fuel energy flow rate was reduced by about 15. 4% .关键词
发动机/循环变动/燃烧/氢气/怠速/试验Key words
Engine/ Cyclic variation/ Combustion/Hydrogen/ Idle/ Experiment分类
能源科技引用本文复制引用
汪硕峰,纪常伟,张擘,张健,牛昭,范伯元..稀燃纯氢发动机怠速燃烧与循环变动试验[J].农业机械学报,2011,42(1):12-15,94,5.基金项目
国家自然科学基金资助项目(50976005) （50976005）
