Evaluation of catalytic converter aging for vehicle operation with ethanol

Almeida, Poliana Rodrigues de; Nakamura, Akira; Sodré, José Ricardo

doi:10.1016/j.applthermaleng.2014.06.069

Cited by 13 publications

(1 citation statement)

References 12 publications

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“…The research indicated that supported 3 nm ceria NPs were found to lower the light-off temperature for CO by 200 and 100°C compared to inactivated and activated ceria micro-powders, respectively. Almeida et al (2014) investigated the impact of temperature on the aging of catalytic converters, and claimed that higher temperatures would reduce the conversion efficiency and accelerate the aging of the catalytic converters. Liu et al (2020) measured the distribution of catalytic converter particles by DMS500 and analyzed the particle characteristics.…”

Section: Introductionmentioning

confidence: 99%

NO catalytic performance analysis of gasoline engine tapered variable cell density carrier catalytic converter

Zuo

Yang

Zhang

et al. 2021

Environ Sci Pollut Res

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Improving the flow field uniformity of catalytic converter can promote the catalytic conversion of NO to NO2. Firstly, the physical and mathematical models of improved catalytic converter are established, and its accuracy is verified by experiments. Then, the NO catalytic performance of standard and improved catalytic converters is compared, and the influences of structural parameters on its performance are investigated. The results showed that: (1) The gas uniformity, pressure drop and NO conversion rate of the improved catalytic converter are increased by 0.0643, 6.78% and 7.0% respectively. (2) As the cell density combination is 700 cpsi/600 cpsi, NO conversion rate reaches the highest, 73.7%, and the gas uniformity is 0.9821. (3) When the tapered height is 20 mm, NO conversion rate reaches the highest, 72.4%, the gas uniformity is 0.9744. (4) When the high cell density radius is 20 mm, NO conversion rate reaches the highest, 72.1%, the gas uniformity is 0.9783. (5) When the tapered end face radius is 20 mm, NO conversion rate reaches the highest, 72.0%, the gas uniformity is 0.9784. The results will provide a very important reference value for improving NO catalytic and reducing vehicle emission.

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Section: Introductionmentioning

confidence: 99%