Reduce NOx Emissions by Adsorber-Reduction Catalyst on Lean Burn Engine
Abstract: The effect of a new catalyst system composed
of traditional three way catalyst converter and adsorber-reduction catalysis
converter on the emission characteristics and BSFC (Breake Specific Fuel
Consumption- BSFC)of a lean burn gasoline engine operated were investigated in
this paper under different schemes of catalyst converter arrangement and
different speeds and loads. The results show that the position of Three Way
Catalyst is before the NOx adsorber Catalyst was the best scheme of catalyst
converter arrangement. Which has the highest converter efficiency of reduction
NOx emission in lean burn gasoline engine. The effects of speed on the exhaust
emission and BSFC were also related to the ratio of lean burn time to rich burn
time and the absolute value of both time of the adsorber-reduction catalyst
converter. The load of the engine was the main influential factor to the
exhaust emission characteristics and BSFC of lean burn gasoline engine, and the
more load of the engine was, the more NOx emission, the less NOx conversion
rate (CNOx) and the better BSFC were.
Author: Dongpeng Yue, Qing
Chang, Lei Liu, Wen Zhang, Shaoshu Chen, Zhijun Li
Journal Code: jptkomputergg130072
