Measurement of Gasoline Exhaust Hydrogen Emissions

Collier, Tony; Burgess, Chris; Brogan, Mark S.; Campbell, Bruce; Finch, Alex; Reavell, K.

doi:10.4271/2004-01-0592

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…The mass spectrometer, employed in this study had a magneticsector mass filter, which allows quantitative measurement of H 2 [12] as well as H 2 O, total NO x , O 2 , and CO 2 . A minimally invasive capillary inlet system (sampling rate = ca.…”

Section: Methodsmentioning

confidence: 99%

Intra-channel evolution of carbon monoxide and its implication on the regeneration of a monolithic Pt/K/Al2O3 NOx storage-reduction catalyst

et al. 2006

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Section: Methodsmentioning

confidence: 99%

Intra-channel evolution of carbon monoxide and its implication on the regeneration of a monolithic Pt/K/Al2O3 NOx storage-reduction catalyst

et al. 2006

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“…They had seen that as the O 2 content was increasing in the exhaust manifold, the mass flow rate and enthalpy generated was also increasing which in the end contributed to higher pressure and temperature which led to better actuation of post-oxidation reaction. [14][15][16][17][18] Besides scavenging, second factor by the name of VVT also played a key role in the reaction. According to a study, VVT tuning had greatly aided in the post-oxidation reaction and towards turbo-lag reduction as well.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of turbocharged SI engine by post-oxidation enhancement in exhaust gas in-homogeneity

Kumar

Moeeni

Kuboyama

et al. 2020

International Journal of Engine Research

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In this research, the improvement of mixing and pulsation in exhaust manifold with a design and implementation of bypass adapter at exhaust port were deeply investigated. This in-turn can improve the post-oxidation phenomena and hence emissions and engine performance could be enhanced. This research investigation includes 1-D, 3-D simulations and experimental validation on a 4-cylinder turbocharged spark ignition (SI) engine. Firstly, the 1-D and 3-D simulation models were developed and calibrated with the experimental results. Then, the simulations were used for the detailed investigation of mixing and pulsation in exhaust manifold with and without bypass adapter. Thereafter, experimental test for the post-oxidation were conducted with and without consideration of the bypass adapter and results were compared. From the simulation and experimental results, it was proven that by using bypass adapter at the exhaust port, the mixing of exhaust gas species was observed to be significantly improved to some extent. Also, the unbalance between exhaust port and turbocharger upstream gas species were reduced. This also reduced the exhaust gas pulsation. By the improvement of mixing between scavenged O2 and unburned gas species, the post-oxidation reaction was also noted to have improved and consequently the emissions and turbo-speed were found to be better that led to an improved IMEP and thermal efficiency of the engine.

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