Optical Experimental Study on Knock Characteristics of Hydrogen-air Pre-mixture

摘要：

By means of schlieren method and gas pressure measurement, knock characteristics of hydrogen-air pre-mixture has been studied in constant volume combustion chamber. The effects of initial temperature, initial pressure and equivalence ratio on flame development process and pressure characteristics have been investigated. The experimental results show that knock caused by autoignition of unburned gas appears firstly in the angle region between the spherical flame front and the wall of combustion chamber on this papers condition;detonation occurs easilier with higher temperature, higher pressure and higher equivalence ratio;the higher the initial temperature is, the faster the pressure rises, but the lower the peak pressure is;pressure increases faster and meanwhile peak pressure is higher according to higher initial pressure;severe knock emerges on the conditions of low temperature and high pressure.

关键词： knock auto-ignition constant volume combustion bomb

作者: Liu Xinghua Fan Zhiqiang Liu Fushui Jiu Jiangang Wang Ruwei

作者单位: Lab. of Engine Technology, Beijing Institute of Technology, Beijing, 100081, China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 54-59

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）