用于汽车测试的 FTIR 气体分析仪性能评估/鉴定

[中文适用范围]： “本文件的范围侧重于 EPA 要求的测试，以验证 FTIR 系统的性能，遵循联邦法规第 1065 部分（40CFR1U.1065，以下简称“EPA 第 1065 部分”）中关于各种受管制气体的指南和性能标准。本文件重点介绍在发动机和车辆测试中使用连续排放采样。未来的附录将需要涵盖袋子和其他采样技术。目前没有性能标准但有性能标准的气体成分注意到可能很快会受到监管，并应用 EPA 关于应要求的建议。这将有助于确保 FTIR 被认为是发动机废气排放测试的有效替代工具。在该文件包括：一氧化碳（CO）@二氧化碳（CO2）@氮氧化物（NO@NO2和N2O）@氨（NH3）@甲烷（CH4）@和甲醛（H2CO）。通过遵循本标准操作程序并根据需要确定 EPA 或其他管理机构的认证要求，可以根据需要添加其他内容。该 SAE 标准参考了 EPA Part 1065 认证测试要求（截至 2014 年 4 月 23 日）中的特定部分，了解提供性能证明所需的所有步骤。该文件为用户提供了应用于发动机或车辆排放测试的 FTIR 气体分析仪指南。本文件适用于多种燃料，包括@但不限于@柴油@汽油@天然气@液化石油气（LPG）@混合物@生物燃料和生物燃料混合物。虽然本文档特别引用 191 作为用于性能验证的温度@，但情况可能并非总是如此。该温度规范特别适用于未经稀释的原始气体排放。如果要对排放气体处于较低温度的稀释气流进行分析，则分析仪也可以在较低温度下运行，前提是感兴趣的组分在到达分析仪之前不会冷凝或反应。目的 本文件的目的是提供一套使用 FTIR 系统进行发动机排放测试的指南和测试程序（如 EPA 第 1065 部分所定义）。每个 FTIR 系统制造商都需要向最终用户提供一套程序，在排放测试之前进行时，将证明并确认 FTIR 已保持其校准并正常运行。下面没有描述这些程序，因为它们取决于仪器制造商。” [外文原描述]： The scope of this document focuses on the tests required by EPA to validate the performance of the FTIR system following the section in the Code of Federal Regulations Part 1065 (40 CFR 1U.1065 and hereafter referred to as “EPA Part 1065”) on the guidelines and performance criteria for various regulated gases. This document focuses on the use of continuous emissions sampling for both engine and vehicle testing. Future addenda will be needed to cover bag and other sampling techniques.Gas components that do not currently have performance criteria but may soon be regulated are noted and EPA suggestions as to what should be required are applied. This will help ensure that the FTIR will be recognized as a valid and alternative tool for engine exhaust emissions testing. Components in engine exhaust that are specifically called out in this document include: carbon monoxide (CO), carbon dioxide (CO 2 ), oxides of nitrogen (NO, NO 2 , and N 2 O), ammonia (NH 3 ), methane (CH 4 ), ethane (C 2 H 6 ), and formaldehyde (H 2 CO). Others (for example, hydrocarbons for non-methane, non-ethane hydrocarbons (NM NE HC) or volatile organic compounds (VOC)) may be added as needed by following this standard operating procedure and determining the certification requirements from EPA or other governing bodies as required.This SAE standard references the specific sections in the EPA Part 1065 certification test requirements (current as of April 23, 2014) for all of the steps required to provide proof of performance. The document provides the user a guideline for the FTIR gas analyzer as applied to engine or vehicle emissions testing. This document is applicable to a wide range of fuels including, but not limited to, diesel, gasoline, natural gas, liquid petroleum gas (LPG), blends, bio-fuel, and bio-fuel blends.While this document specifically references 191 °C as the temperature used for performance validation, this may not always be the case. The temperature specification applies specifically to the raw gaseous emissions that have not been diluted. If the analysis is to be performed upon a diluted gas stream where the emission gas is at a lower temperature, then the analyzer can also be run at a lower temperature, provided that the components of interest do not condense or react prior to reaching the analyzer.Cross Reference: