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Wu Guojiang
Tan Song
Huang Zhen
School of
Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200030, China |
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NUMERICAL SIMULATION OF EFFECTS OF
WALL THICKNESS AND CELL DENSITY ON THE THREE-WAY CATALYTIC
CONVERTER PERFORMANCE
Abstract:
The transient symmetric mathematical model is established, and the effects of the wall thickness and cell density on the performance of a three-way catalytic converter are studied using numerical modeling. The conclusions show that the light-off time and the pressure drop through a converter are decreased, and the conversion efficiency during the warm-up period keeps almost invariant with reduction of the wall thickness of substrates, and that the pressure drop through a converter and a conversion efficiency during the warm-up state increases, and the light-off time almost keeps invariant when increasing cell density of substrates. Therefore, future catalytic converters should develop in the direction of thin wall thickness and high cell density substrates simultaneously.
Key words:
Numerical simulations Advanced catalytic converter Emissions |