Abstract
The laser mass spectrometry (LAMS) is used here as a tool for dynamic exhaust analytics. The high sensitivity (dependent on the laser wavelength) of this method makes the trace analysis of individual components down to the ppt range achievable. The time resolution for the measurement is determined by the repetition rate of the laser (20 Hz). Substances of interest are the nitrogen oxides, aromatic components and Carbon monoxide, whose concentrations are determined at different points of the emission cleaning process both of spark-ignited and of diesel engines. Further the burn procedures in the cylinder are examined, whereby statements about time of origin and concentration of NO or CO can be made.
| Translated title of the contribution | Test facility-suited, dynamic on-line measuring method for nitrogen oxides, ammonia and aromatic components in the exhaust gas of petrol and diesel engines |
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| Original language | German |
| Pages (from-to) | 361-366 |
| Number of pages | 6 |
| Journal | VDI Berichte |
| Issue number | 1755 |
| State | Published - 2003 |