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1. 发明授权

US08858222B1 Low energy laser-induced ignition of an air-fuel mixture 有权
标题翻译：空气燃料混合物的低能量激光诱发点火
公开(公告)号：US08858222B1
公开(公告)日：2014-10-14
申请号：US12780324
申请日：2010-05-14
申请人： Steven F. Adams
发明人： Steven F. Adams
IPC分类号： F23N5/20
CPC分类号： F23C99/00 , F23C2900/99003 , F23N2027/28 , F23Q13/005 , F23R2900/00006
摘要： A new approach for igniting an air-fuel mixture in a turbine or other engine is disclosed. Resonance-enhanced multiphoton ionization (REMPI) is used to generate volume ionization within an air-fuel flow and induce an ignition arc. The output of a relatively low energy single pulsed ultraviolet laser is aimed across an electric field inside a volume of air to create a pre-ionized channel so that a smaller voltage electric field is sufficient to create an electrical arc that follows the pre-ionized channel and will ignite an air-fuel mixture. Because the arc follows the pre-ionized channel, it can be directed to an optimal location inside an ignition volume for igniting the air-fuel mixture. A specific example embodiment is described using a 287.5 nm wavelength pulsed ultraviolet laser to excite ground state oxygen molecules to a specific excited state having a coincident term energy with a specific nitrogen molecule excited state.
摘要翻译：公开了一种用于点燃涡轮机或其他发动机中的空气 - 燃料混合物的新方法。共振增强多光子电离（REMPI）用于在空气 - 燃料流中产生体积电离并引发点火电弧。相对低能量的单脉冲紫外激光器的输出是针对空气体积内的电场产生预电离通道，使得较小的电压电场足以产生遵循预电离通道的电弧并将点燃空气燃料混合物。因为电弧跟随预电离通道，所以它可以被引导到点火容积内部用于点燃空气 - 燃料混合物的最佳位置。使用287.5nm波长的脉冲紫外激光来描述具体的示例性实施例，以将基态氧分子激发到具有特定的具有特定氮分子激发态的重合项能量的特定激发态。

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