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WLTP-DTP Subgroup Additional Pollutants Progress report

WLTP-DTP Subgroup Additional Pollutants Progress report. Date: 17. Apr. 2012. 2. 2. Additional pollutants: Request for Parameters’ list. Parameters’ list For NO 2. 1. 3. Other AP In VP2. Meeting schedule First Meeting: Telephone/Web Conference 20th July 2010 16 participants

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WLTP-DTP Subgroup Additional Pollutants Progress report

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  1. WLTP-DTP Subgroup Additional PollutantsProgress report Date: 17. Apr. 2012

  2. 2 2 Additional pollutants: Request for Parameters’ list Parameters’ list For NO2 1 3 Other AP In VP2

  3. Meeting schedule First Meeting: Telephone/Web Conference 20th July 2010 16 participants 2nd Meeting: Telephone/Web Conference 20th July 2010 20 participants 3rd Meeting: Face to face meeting at JRC/Ispra 9/10 Dec. 2010 14 participants 4th Meeting: Face to face meeting at BMW/Munich 7/8 March 2011 18 participants 5th Meeting: Face to face meeting at JRC/Ispra 10/11 Mai 2011 16 participants 6th Meeting: Telephone/Web Conference 09th Dec. 2012 16 participants WLTP-DTP-AP, Mörsch/Astorga

  4. 2 2 Additional pollutants: Request for Parameters’ list Parameters’ list For NO2 1 3 Other AP In VP2

  5. Request to prepare parameter list for further additional pollutants Issue was discussed within group: Agreed that only NO2 should be required from all labs in VP2 Reasons: most labs do not have instrumentation or instrumentation is not available for other APs reference fuel E5  measurement of EtOH and Aldehydes not meaningful WLTP-DTP-AP, Mörsch/Astorga

  6. The AP sub-group wanted to encourage all labs to deliver as many compounds of the additional pollutants list as they can & the results will be analyzed during validation phase 2.

  7. 2 2 Additional pollutants Request for Parameters’ list Parameters’ list For NO2 1 3 Other AP In VP2

  8. NO measurement from Bag After discussion of pros and cons it was decided to retain the possibility of bag measurement of NO for VP2. All participating labs should measure both ways (bag and dilute modal). Parameter list has been amended (Version03) WLTP-DTP-AP, Mörsch/Astorga

  9. Parameter List for NO2 measurements (AP) Version 03

  10. Qualitative assessment parameters for validation phase 2 NO-measurement All participating labs should measure both ways (bag and dilute modal). • All measurements: • Absolute difference between dilute and modal measurement • Repeat tests: • Variability of NO result compared to NOx-measurement • Variability of NO result from bag measurement versus dilute modal

  11. 2 2 Additional pollutants Request for Parameters’ list Parameters’ list for NO2 1 3 Other AP In VP2

  12. Labs may use existing equipment for NH3 or N2O Report setup/analyzers used and experiments quite in detail Further decision will be based on results of VP2

  13. Table of candidate methods for additional pollutants WLTP-DTP-AP-05-01

  14. Qualitative assessment parameters for validation phase 2 N2O-measurement Use of two (or more) different systems in parallel (e.g. QCL, GC-ECD, FTIR,…) Cal Gas: 5 ppm of N2O in N2 (+/- 2%) • All measurements: • repeatability of air bag measurement • difference in result of the two systems • stability of calibration (apply cal gas before and after test) • Repeat tests: • Variability of N2O result

  15. Qualitative assessment parameters for validation phase 2 NH3-measurement NH3 only for Diesel with SCR • take care of extracted sample • measurement of two systems in parallel (e.g. QCL and FTIR…) • use of different sampling systems • one with smallest possible Volume, shortest possible line length • one with larger Volume and line length • where available, use in situ system in parallel • All measurements: • compare average concentration result • Compare traces of the systems • incidence of first peak • rise time • drag • Repeat tests: • Variability of NH3 result

  16. Request to include EtOH Request to OICA to include one FFV (one lab) Request to suppliers to make available online systems for EtOH All systems measure in parallel NMOG Online systems for Aldehydes are under development but not yet available

  17. Table of candidate methods for additional pollutants

  18. Table of candidate methods for additional pollutants WLTP-DTP-AP-05-01

  19. Drafting of GTR for reference methods [*] NO2 and NH3 based on OICA proposals N2O, Ethanol and Aldehydes based on existing legislation Gathering of performance data for candidate methods Tasks have been assigned within group and will be performed until next meeting AP-Work on-going [*] Draft GTR proposal: WLTP-DTP-LabProcICE-112 (…)

  20. Open Issues NH3 sampling during engine off Temperature for NH3 sampling (110 – 190?C) proposal:  set point between 110 C and 190 C with range of +/- 10 K  JAMA position: between 110 and 133 due to decomposition of urea

  21. Open Issues (2) Traceability to national standards of cal gas for AP  DTP  gas industry  difficulties for NH3, EtOH to be expected, achievable accuracy/stability has to be established WLTP-DTP-AP, Mörsch/Astorga

  22. Ref.: CIRCA documents WLTP-DTP-AP Draft GTR proposal: WLTP-DTP-LabProcICE-101 & open questions: WLTP-DTP-AP-07-02 Open Issues THANKS FOR YOUR ATTENCION C. Astorga covadonga.astorga-llorens@jrc.ec.europa.eu http://ies.jrc.cec.eu.int

  23. General guidelines agree on performance criteria • LoD • cross interference • … • (A table of candidate methods to be evaluated has been set up) allow alternative methods (and factors) based on existing legislation where suitable avoid raw measurement where possible

  24. Definitions for THC, NMHC and NMOG have been agreed (Alignment with ICE lab group is needed) THC: total Hydrocarbons (All compounds measurable by FID) NMHC: Non-methane hydrocarbons (THC excluding CH4 and ROH, response factors are applied) NMOG: Non-methane organic gases (NMHC plus ROH and RHO)

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