[关键词]
[摘要]
个绍了国内外近年来在降低二冲程摩托车废气排放方面所采取的主要技术措施,分析比较了各种措施在结构、净化效果和成本等方面的特点,指出:对现有二冲程摩托化油器进行高速使混合气变稀,并改进化油器进气道形状,是降低二冲程摩托车废气排放的最简单且有效的措施;采用缸内燃料直接喷射技术是唯一能很好解决二冲程摩托车废气排放的技术措施;与采用缸内燃料直接喷射技术相比,分层扫气的结构简单、成本低,净化效果比化油器混合气稀化好,是一种值得进一步研究的净化措施。
[Key word]
[Abstract]
The main technological measures for reducing two stroke motorcycle exhaust emission in China and foreign country are introduced. The characteristics of the measures in structure, effect, cost, etc., are analysed. The results show that the enleanment of conventional carburetor mixture and the improvement of the carburetor intake passage shape is a simple and effective measure, the adoption of the electronically controlled in cylinder direct fuel injection technique is a unique measure to completely improve emissions from two stroke motorcycles. The structure and cost of a stratified scavenging system is lower than that of in cylinder direct fuel injection, but its effect is better than that of the enleanment of carburetor mixture, so, it is worth investigating further. The factories of two stroke motorcycles may select the reduction measures of the exhaust emission by referring to the analyses and comparisons.
[中图分类号]
U483
[基金项目]