Publications by authors named "Qingwu Guan"
Article Synopsis
- The study addresses the challenge of improving NOx conversion and particulate combustion efficiency in catalytic gasoline particulate filter systems (CGPFs) during cold starts.
- Models for novel CGPFs were developed and tested using computational fluid dynamics, showing a 3.2% increase in NOx conversion and a 2.7% increase in particulate combustion efficiency compared to conventional systems.
- The research also investigated the impact of various exhaust parameters, revealing further improvements of 3.6% in NOx conversion and 16.7% in particulate combustion efficiency, providing valuable insights for enhancing vehicle emission purification.
NO catalytic performance analysis of gasoline engine tapered variable cell density carrier catalytic converter.
Environ Sci Pollut Res Int
January 2022
Article Synopsis
- Improving the uniformity of the flow field in catalytic converters enhances the conversion of NO to NO₂, as shown by experimental validation of developed models.
- The improved catalytic converters demonstrate significant performance gains: 0.0643 increase in gas uniformity, 6.78% reduction in pressure drop, and a 7.0% increase in NO conversion rate compared to standard converters.
- Optimal configurations, such as a cell density combination of 700 cpsi/600 cpsi and a tapered height of 20 mm, result in the highest NO conversion rates, exceeding 72%, indicating practical implications for reducing vehicle emissions.