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MEASUREMENT OF $CO_2$ CONCENTRATION AND A/F RATIO USING FAST NDIR ANALYZER ON TRANSIENT CONDITION OF SI ENGINE  

Lee, S.W. (School of Mechanical Engineering, Ajou University)
Kim, W.S. (School of Mechanical Engineering, Ajou University)
Lee, J.H. (School of Mechanical Engineering, Ajou University)
Park, J.I. (School of Mechanical Engineering, Ajou University)
Yoo, J.S. (School of Mechanical Engineering, Ajou University)
Publication Information
International Journal of Automotive Technology / v.7, no.4, 2006 , pp. 385-390 More about this Journal
Abstract
A fast response $CO_2$ analyzer has been developed to study transient characteristics on an SI engine. The analyzer has the delay time of 4.5 ms and time constant of 2.8 ms, which is fast enough to measure $CO_2$ concentration on a transient condition. Wide range of A/F(Air/Fuel) ratio can be estimated using the analyzer with an additional switch type oxygen sensor. The results of measurement of $CO_2$ concentration and A/F ratio on a transient condition including rapid acceleration/deceleration and EGR(Ehxaust Gas Recirculation) on/off are presented and compared with a commercial exhaust gas analyzer and UEGO(Universial Exhaust Gas Oxyzen) sensor.
Keywords
FRNDIR(Fast Response NDIR); NDIR(Non-Dispersive Infrared); $CO_2$ concentration; A/F ratio; Transient condition;
Citations & Related Records

Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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