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首页> 外文期刊>Atmospheric environment >MTBE, methane, ethylene and regulated exhaust emissions from vehicles with deactivated catalytic converters
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MTBE, methane, ethylene and regulated exhaust emissions from vehicles with deactivated catalytic converters

机译：具有停用的催化转化器的车辆的MTBE，甲烷，乙烯和规定的废气排放

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摘要

In the present work, the effect of the gradual deactivation of a three-way catalytic converter on the exhaust emissions was studied. The exhaust gases were analyzed for CO, HC (i.e. total unburned organic compounds), MTBE, methane and ethylene, before and after their catalytic treatment, in a wide range of engine operating conditions. The thermal aging of the catalytic converter resulted in an increase in the required time for the start of its operation and loss of its auto thermal operation. The catalytic efficiency was significantly decreased after each thermal aging step, especially at idle conditions. As a result, CO and especially HC emissions were increased, whereas ethylene and MTBE emissions were multiplied by a factor of 6-7 at 3.81 hp, in the case of the deactivated catalyst.
机译：在目前的工作中，研究了三元催化转化器逐渐失活对废气排放的影响。在各种发动机工况下，对废气进行催化处理之前和之后，分析其中的CO，HC（即未燃烧的有机化合物总量），MTBE，甲烷和乙烯。催化转化器的热老化导致开始运行所需的时间增加以及自动热运行损失。在每个热老化步骤之后，尤其是在怠速条件下，催化效率均显着降低。结果，在催化剂失活的情况下，CO和特别是HC排放量增加，而乙烯和MTBE排放量在3.81 hp时乘以6-7倍。

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