Experiment on reduction of NOx emission in a lean-burn gasoline engine

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作者：
机构：
[1] Wang, Tian-You
[2] Liu, Shu-Liang
[3] Guan, Nai-Jia
[4] Xu, Hong-Jun
[5] Li, Lan-Dong
[6] Li, Xing
来源：
Wang, T.-Y. (tianyouwang@eyou.com) | 2005年 / Tianjin University卷 / 38期
关键词：
Fuel consumption - Gas emissions - Nitrogen oxides - Purification - Reduction - Zeolites;
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摘要：
The NOx emission of a 1.342 L lean-burn gasoline engine was studied. Both purification in cylinder and treatment after exhaust were adopted. On the one hand the new combustion method used lean-burn, fast burn (tumble) and delayed ignition to reduce the NOx emission. On the other hand it used Cu-ZSM5 zeolite catalyst which was in-situ synthesis to give the exhaust NOx an after-treatment. All these methods made the lowest NOx emission attain 133 × 10-6 at the typical experimental condition of lean-burn engine, and the NOx emission was below 250 × 10-6 when the exhaust temperature was at 220-450°C. The fuel consumption decreased by 14.8% at the same time.
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