Towards Multiplexed Fiber Delivered Laser Ignition for Natural Gas Engines
Towards Multiplexed Fiber Delivered Laser Ignition for Natural Gas Engines
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DOI：
10.1115/1.2906184
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发表时间：
2008-07
影响因子：
1.5
通讯作者：
A. Yalin;S. Joshi;M. Defoort;B. Willson
中科院分区：
文献类型：
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作者：
A. Yalin;S. Joshi;M. Defoort;B. Willson
激光点火用于先进的燃气发动机可以提供包括稀极限的扩展和在升高的压力下的更高效率操作的益处。这一贡献提供了一个简短的审查努力，发展一个实用的激光点火系统先进的多缸燃气发动机。该方法是使用一个单一的激光源与光纤电缆提供高功率脉冲从源到发动机气缸。光纤传输的光学要求使我们使用带涂层的空芯光纤。表征和结果的火花交付测试的纤维。总结了光纤激光点火在单缸发动机上的试验结果。对于多柱面操作，基于移动镜的多路复用器用于将激光输出脉冲路由到不同的光纤通道（柱面）。多路复用系统的台架测试和初始发动机测试。
The use of laser ignition for advanced gas engines may provide benefits including extension of the lean limit and higher efficiency operation at elevated pressures. This contribution provides a short review of efforts to develop a practical laser ignition system for advanced multicylinder gas engines. The approach is to use a single laser source with fiber optic cables delivering the high power pulses from the source to the engine cylinders. The optical requirements for the fiber delivery lead us to use coated hollow core optical fibers. Characterizations and results of spark delivery tests for the fibers are presented. Single-cylinder engine test results using fiber delivered laser ignition are summarized. For multicylinder operation, a multiplexer based on a moving mirror is used to route the laser output pulses to different fiber channels (cylinders). Benchtop testing and initial engine testing of the multiplexed system are presented.