| Zugriffsnummer | 28331 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Evaluation of measuring methods for particle emissions from modern diesel vehicles in periodicemissions control |
| Autor(in); Institution |
Jordan-Gerkens, Anke; 3.2, Gasanalytik und Zustandsverhalten, PTB-Braunschweig
Nowak, Andreas; 3.2, Gasanalytik und Zustandsverhalten, PTB-Braunschweig
Mamakos, Athanasios; Joint Research Center, Institute for Energy and Transport, JRC-IET, Ispra, ITALY
Böse, Norbert; 3.2, Gasanalytik und Zustandsverhalten, PTB-Braunschweig
Krasenbrink, Alois; Joint Research Center, Institute for Energy and Transport, JRC-IET, Ispra, ITALY
Ebert, Volker; 3.2, Gasanalytik und Zustandsverhalten, PTB-Braunschweig; TU Darmstadt, Center of Smart Interfaces, Darmstadt, GERMANY
|
| Quelle/Jahr | Combustion Generated Nanoparticles, 16. ETH-Conference, June 2012:(2012) |
| Availability | [CD-ROM] |
| ISBN | 978-3-033-03556-0 |
| Verlag | Gebenstorf: Nöthinger |
| Konferenzangaben | Combustion Generated Nanoparticles, 16. ETH-Conference, Zurich, 24-27, June, 2012, Switzerland |
| Freie Schlagworte | periodic emissions control ; soot emission ; instrumentation ; soot particle ; metrological validation ; EMRP ; ENV02 |
| Zusammenfassung | In order to bring regulatory emission control equipment in line with technical progress, the establishment of novel measuring instruments and procedures for periodic emissions control has become necessary. As part of the “ENV02 PartEmission” project, within the European Metrology Research Programme (EMRP), four metrological institutions (PTB, Germany, METAS, Switzerland, MIKES, Finland and JRC-IE, EU) are going to evaluate measuring methods for particle emission from modern diesel vehicles for periodic emissions control The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union. In the scope of the research work in the second work package (WP2) “Evaluation of measuring methods for particle emission from modern diesel vehicles in periodic emissions control” we will evaluate the measurement devices and metrological procedures for the periodic emission inspection of vehicles. In particular the maintenance procedures have not been amended to reflect the recent advances in diesel aftertreatment technology (widespread use of diesel particle filters (DPF)) and the changes of the certification procedures with respect to the measurement of the soot particle numbers. The currently used opacimeters are not sensitive enough to quantify the soot emission characteristics of DPF equipped engines and there are concerns about whether they are able to identify DPF malfunctions. But significant progress has already been made in aerosol instrumentation: High-sensitivity soot emission instrumentation which significantly outperforms classical opacimeters has appeared in research applications and on the market. These instruments determine with various physical principles opacity, particle mass concentration or particle number concentration in the exhaust gases. Their implementation in legal metrology needs a well founded metrological validation. This project will develop the metrological background for these instruments measuring the soot particle mass or soot particle number per volume in the exhaust gases from diesel vehicles. The capability of these measuring instruments will be investigated with regard to the regulated requirements for regulatory periodic emissions control. In a first step the calibration requirements for the laboratory test procedure have been defined and published in a report which is available on the ENV02 website. The candidate instrumentation will be assessed via comparative measurements of particle number concentration (PN) and/or the aerosol opacity. Laboratory tests will be performed over a range of particle number concentrations (105 to 108 cm-3) and light extinction coefficients (0.01 m-1 to 3.0 m-1) using a range of well controlled particle size distributions typical for light duty diesel exhaust, which means polydisperse aerosols with geometric mean diameter of 50 to 100 nm and geometric standard deviation of 1.6 to 2.0. The calibration aerosol should include soot from CAST or other combustion sources. The performance characteristics to be evaluated include measurement accuracy, sensitivity and dynamic response. All of these investigations need to be assessed for the complete system, including necessary sampling devices. Special attention will be given to consider effects of sample pressure or temperature on the instrument response. Furthermore, the possibility for an official verification of the novel instruments will be evaluated. Field measurements and practical usability tests with suitable instruments under required conditions are planned after the laboratory tests. The results of this project will facilitate the implementation of novel instruments for regulatory periodic emissions control in legal metrology. |
Zitierung
Jordan-Gerkens, A., Nowak, A., Mamakos, A., Böse, N., Krasenbrink, A., & Ebert, V. (2012). Evaluation of measuring methods for particle emissions from modern diesel vehicles in periodicemissions control. Combustion Generated Nanoparticles, 16. ETH-Conference, Zurich, 24-27, June, 2012, Switzerland.