清洁燃烧发动机先进点火系统的研究综述(英文)

Advanced Ignition Systems for Future Clean Combustion Engines:Review

综述了近年来在先进点火方法和系统方面的快速进展。介绍了发动机点火的基本物理原理(它决定了点火系统的改进方向)和相关发动机以及容弹的实验结果,主要包括:高能量火花放电点火﹑高压脉冲放电点火﹑射频等离子体点火﹑激光点火。根据大量研究报道以及本文作者的实验研究结果 ,对多种点火系统的效果及应用挑战做出综合评价。结论为:未来清洁燃烧内燃机趋向于采用稀释工质低温燃烧策略,以提高汽车发动机燃油经济性并降低排放。先进缸内混合气控制手段包括:降低工质活性﹑非均匀分布以及增强气流等,然而所有这些手段也会增加发动机着火控制的难度。先进的高能量点火系统能够用来改善未来高效清洁发动机的点火控制。

The rapidly progressing of advanced ignition methods and systems in recent years was summarized. The working principles of the primary types of advanced ignition systems, on which the ignition system improvement directions are highly based, and the test results of relevant engine and combustion vessel were introduced. The main advanced ignition systems, including the high-energy spark ignition, the high-voltage pulsed power ignition, the radio-frequency plasma ignition, and the laser ignition, were commented in terms of the ignition effectiveness and the implementation challenges according to the previous reports and the extensive empirical work at the author＇s laboratory. In conclusion, the future clean combustion engines tend to employ diluted charges using low temperature combustion strategies to improve the fuel economy and reduce the exhaust emissions. But all the future advanced mixture control activities inside an engine cylinder, including the reactivity suppression, the heterogeneous distribution, and the intensified motion, will increase the difficulties of ignition control. Advanced high energy ignition systems are considered being able to improve the ignition control of future hign efficiency clean combustion engines.