Fast Response CO2 Sensor for Automotive Exhaust Gas Analysis
Fast Response CO2 Sensor for Automotive Exhaust Gas Analysis
复制标题
用于汽车尾气分析的快速响应 CO2 传感器
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
T. Hands
中科院分区：
文献类型：
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作者：
C. Sutela;N. Collings;T. Hands
一种用于测量二氧化碳浓度的快速响应传感器已开发用于实验室研究并在火花点火发动机上进行了测试。该传感器采用众所周知的红外吸收技术，配有小型检测系统和短毛细管采样管，时间常数约为5毫秒；这足够快，足以在正常操作条件下逐周期观察二氧化碳水平的变化。该传感器可轻松安装在排气系统中并连续运行。该传感器在标准生产的四缸火花点火发动机上进行了测试，以观察稳态和瞬态工作条件下废气中二氧化碳浓度的变化。将处理后的传感器信号与排气流中的标准空燃比 (AFR) 传感器进行比较，结果如下所示。高频响应 CO2 测量为发动机和催化剂瞬态运行提供了新的见解。版权所有 © 1999 汽车工程师协会
A fast response sensor for measuring carbon dioxide concentration has been developed for laboratory research and tested on a spark ignition engine. The sensor uses the well known infra-red absorption technique with a miniaturized detection system and short capillary sampling tubes, giving a time constant of approximately 5 milliseconds; this is sufficiently fast to observe changes in CO2 levels on a cycle-by-cycle basis under normal operating conditions. The sensor is easily located in the exhaust system and operates continuously. The sensor was tested on a standard production four cylinder spark-ignition engine to observe changes in CO2 concentration in exhaust gas under steady state and transient operating conditions. The processed sensor signal was compared to a standard air-to-fuel ratio (AFR) sensor in the exhaust stream and the results are presented here. The high frequency response CO2 measurements give new insights into both engine and catalyst transient operation. Copyright © 1999 Society of Automotive Engineers, Inc.