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首页> 外文会议>Proceedings of the 2009 spring technical conference of the ASME Internal Combustion Engine Division >MAPPING STUDY TO CHARACTERIZE NSCR PERFORMANCE ON A NATURAL GAS-FUELED ENGINE
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MAPPING STUDY TO CHARACTERIZE NSCR PERFORMANCE ON A NATURAL GAS-FUELED ENGINE

机译：表征天然气发动机的NSCR性能的映射研究

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摘要

Kansas State University's National Gas Machinery Laboratory and Innovative Environmental Solutions, Inc. are conducting a project to characterize pollutant emissions performance of field gas-fired four-stroke cycle rich burn (4SCRB) engines equipped with non-selective catalytic reduction (NSCR) technology. Engine emissions and operating parameters are being monitored on three engines over an extended period. In addition, a mapping study was conducted on one engine. The NSCR was operated at various controlled air-to-fuel ratios (AF) while emission measurements were conducted and engine operating parameters monitored. NO_X, CO, and oxygen were measured using both EPA reference method technology and the portable analyzer used in the long-term study. In the mapping study, ammonia, formaldehyde, and speciated hydrocarbon emissions were recorded in real-time using an extractive FTIR system. This paper focuses on the engine mapping phase. The mapping tests demonstrated a trade-off between NO_X emissions and CO, ammonia, and hydrocarbon emissions. Richer engine operation (lower AF) decreases NO_X emissions at the expense of higher CO, ammonia, and hydrocarbons. Leaner operation has the opposite effect. The results to date of the semi-continuous monitoring are presented in a separate paper.
机译：堪萨斯州立大学的国家燃气机械实验室和Innovative Environmental Solutions，Inc.正在进行一个项目，以表征配备有非选择性催化还原（NSCR）技术的野外燃气四冲程富燃（4SCRB）发动机的污染物排放性能。长时间监控三台发动机的发动机排放和运行参数。另外，在一个发动机上进行了映射研究。 NSCR在各种受控的空燃比（AF）下运行，同时进行排放测量并监控发动机运行参数。使用EPA参考方法技术和长期研究中使用的便携式分析仪测量了NO_X，CO和氧气。在制图研究中，使用萃取式FTIR系统实时记录了氨，甲醛和特定的碳氢化合物排放量。本文着重于引擎映射阶段。映射测试证明了NO_X排放与CO，氨和碳氢化合物排放之间的权衡。较高的发动机运行（较低的AF）可降低NO_X排放，但要以较高的CO，氨和碳氢化合物为代价。精益操作的效果相反。迄今为止，半连续监视的结果在另一篇论文中介绍。

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