| 摘要 |
<p>The invention relates to a catalytic converter system for cleaning diesel engine emissions, comprising a first and a second catalytic converter arranged in an emission control system. Said system is characterized in that both catalytic converters are reducing catalysts, the first being located close to the engine in an area of the emission control system where the emission temperature reaches 300 °C at full engine load, and the second being located away from the engine in an area of the emission control system where the emission temperature reaches a maximum of 500 °C at full engine load, whereby the maximum reduction of nitrogen oxide by the first catalytic converter occurs at temperatures which are lower than the maximum nitrogen oxide reduction of the second catalytic converter.</p> |
