A fast response CO₂ analyzer has been developed to study transient characteristics of SI engine. The analyzer has 4.5 ms delay time and 2.8ms time constant, which is fast enough to measure CO₂ concentration on transient condition. Wide range of A/...
A fast response CO₂ analyzer has been developed to study transient characteristics of SI engine. The analyzer has 4.5 ms delay time and 2.8ms time constant, which is fast enough to measure CO₂ concentration on transient condition. Wide range of A/F ratio can be also estimated using the analyzer with an additional switch type oxygen sensor. The result of measurement of CO₂ concentration and A/F ratio on transient condition including rapid acceleration, rapid deceleration, and EGR on/off is presented and compared with commercial exhaust gas analyzer and UEGO sensor.