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首页> 外文会议>Proceedings of the 2009 spring technical conference of the ASME Internal Combustion Engine Division >VARIATIONS IN LONG-TERM EMISSIONS DATA FROM NSCR-EQUIPPED NATURAL GAS-FUELED ENGINE
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VARIATIONS IN LONG-TERM EMISSIONS DATA FROM NSCR-EQUIPPED NATURAL GAS-FUELED ENGINE

机译：NSCR装备的天然气发动机的长期排放数据的变化

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摘要

This paper describes work by Kansas State University's National Gas Machinery Laboratory and Innovative Environmental Solutions, Inc. on a project to characterize pollutant emissions performance of non-selective catalytic reduction (NSCR) technology, including a catalyst and air-to-fuel ratio controller (AFRC), applied to four-stroke cycle rich-burn engines. Emissions and engine data were collected semi-continuously with a portable emissions analyzer on three engines in the Four Corners area. In addition, periodic emissions measurements that included ammonia were conducted several times. Data collected from October, 2007, through August, 2008, shows significant variation in emissions levels over hours, days, and longer periods of time, as well as seasonal variation. As a result of these variations, simultaneous control of NO_x to below a few hundred parts per million (ppm) and CO to below 1,000 ppm volumetric concentration was not consistently achieved. Instead, the NSCR/AFRC systems were able to simultaneously control both species to these levels for only a fraction of the time the engines were monitored. Both semi-continuous emissions data and periodically collected emissions data support a NO_x-CO trade-off and a NO_x-ammonia tradeoff in NSCR-equipped engines.
机译：本文介绍了堪萨斯州立大学国家燃气机械实验室和Innovative Environmental Solutions，Inc.开展的一项工作，该项目旨在表征非选择性催化还原（NSCR）技术的污染物排放性能，其中包括催化剂和空燃比控制器（ AFRC），适用于四冲程富燃发动机。使用便携式排放分析仪在“四角”区域的三台发动机上半连续收集排放和发动机数据。此外，包括氨在内的定期排放测量也进行了数次。从2007年10月到2008年8月收集的数据显示，排放水平随小时，天数和较长时间的变化以及季节性变化。由于这些变化，不能始终如一地同时控制NO_x到百万分之几百（ppm）以下和CO到千分之千以下体积浓度。取而代之的是，NSCR / AFRC系统仅在监控发动机的一小部分时间内就能将两种物质同时控制在这些水平上。半连续排放数据和定期收集的排放数据都支持在装有NSCR的发动机中进行NO_x-CO权衡和NO_x-氨权衡。

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