Advanced Analysis - For the development of low emissons engines and vehicles

Today’s exhaust aftertreatment systems for combustion engines are getting more and more complex, especially since the introduction of SCR catalysts for diesel vehicles and the increased usage of alternative fuels. A more detailed knowledge about the chemical and physical processes during engine operation and at the catalyst is absolute necessary. Otherwise, wrong directions in the development and design of new powertrains will take place or much longer development times may occur. For that conventional exhaust gas measurement systems are not sufficient anymore.

AVL provides SESAM measurement systems to comply with these requirements and to support the developers of engines and catalyst systems.

AVL SESAM FTIR

SESAM FTIR (Fourier Transform Infrared Analyzer) is the most powerful multi component measurement system. Up to 25 pre-calibrated sample gases can be measured simultaneously and dynamically. Easy operation, connection to automation systems and low maintenance effort make the system perfectly suitable for test beds. Because of the excellent long term stability no re-calibration with span gases is necessary. SESAM FTIR is the ideal tool for catalyst system checks as well as for each kind of analysis of combustion processes.

AVL SESAM MS

SESAM MS (Mass Spectrometer) is specially used for measuring components which do not absorb within the infrared range and therefore, cannot be measured or at least be measured badly by a SESAM FTIR. The mass spectrometer is also suitable for multi component measurement and has a very fast response time. Often it is used for measurement on H2S (hydrogen sulphide) or H2 (hydrogen). Also very low concentrations of SO2 for e.g. Tracer-Oil consumption measurement can be detected with a SESAM MS. The SESAM MS has to be calibrated appropriately for each desired measurement component.

AVL SESAM DIOLA

SESAM DIOLA (Diode laser) is a high sophisticated high speed measurement system with a response time of only 5 milliseconds for parallel sampling of three gas components at up to four sampling points. The SESAM DIOLA can be integrated into the test bed automation. For calibration common calibration gases can be used. Because of four sampling points a high dynamic analysis of complex catalyst systems’ processes is possible to analyze effects which cannot be detected with other measurement methods.