WLTP-06-32e WLTP AP WLTP-AP VALIDATION PHASE 2 FOR SELECTED ADDITIONAL POLLUTANTS Status Report and Open issues 6th WLTP - Vienna, 26-28-April-2014 M C Astorga M.C. 28 March 2014 1 WLTP (DTP) AP WLTP-(DTP)-AP VALIDATION PHASE-2 PHASE 2 NH3 28 March 2014 2 It is perfectly possible to measure NH3 at the exhaust with and “on line” method with all the guaranties of reproducibility and Repeatability of the results. NH3 NH3 measurements in the gas phase of LD vehicles’ Exhaust (3 instruments i t t have h been b validated lid t d during d i VP2) The VP2 allows to include method for NH3 in the GTR: We have recovered the text from the last version of the GTR basically as it was (annex 5 in point 7.1.1 7 1 1 and following). following) Now includes the instruments and some more precise analytical instrumentation. A document with the information from the campaign HAS BEEN SENT to the WLTP Chair and is now loaded @ 06-27e 28 March 2014 3 https://www2.unece.org/wiki/display/trans/WLTP+6th+session NH3 Instrument FTIR (JRC) BLAQ-Sys (CGS QCL) QCL-IR (HORIBA MEXA1400QL NX) 28 March 2014 Sampling flow (l/min) Frequency (Hz) System temp (°C) 10 1 190 1 1 Sampling 190 Analyzers 100 9 5 113 4 NH3 Table 1. Vehicles description. p Denomination DV1 DV2 Combustion type Diesel Diesel EU emission standard Euro 6 After treatment After-treatment Fuel Fuel system Engine (cm3) displacement Engine power (kW) Odometer (km) Vehicle weight (kg) FFV Flex-fuel gasoline/EtOH g GV Euro 5 Euro 5a Euro 5 DPF, SCR B5 TDI DPF B5 TD TWC E5 DI TWC E5 GDI 1968 1560 1596 1390 105 22362 1712 84 18871 1282 132 24334 1481 132 38541 1194 Gasoline NH3 Fig3. Fig3 Real time Real-time ammonia emission concentration for vehicles DV1, DV1 DV2, DV2 FFV and GV over the WLTC measured by HR-FTIR HR FTIR (blue) (blue), HORIBA MEXA 1440 QL-NX (red), and CGS BLAQ-Sys Q y ((black). ) NH3 Fig4. Concentration of Fig4 ammonia measured by HRFTIR (blue), HORIBA MEXA 1440 QL QL-NX NX (red), (red) and CGS BLAQ-Sys (black), compared with one tenth of the concentration of ethylene, ethylene measured by HR-FTIR (dotted blue) over the WLTC. Ethylene concentration for DV1 and DV2 is found on the right axis. NH3 Table 3. Average g ammonia concentration from the four tests vehicles,, DV1,, DV2,, FFV and GV using HR-FTIR, HORIBA MEXA 1440 QL-NX, and CGS BLAQ-Sys. Vehicle DV1 DV2 FFV GV 0.5 (±0.1) 1.0 HORIBA QCLIR 0.1 (±0.1) 0.8 CGS BLAQSys 0.2 (±0.1) 6.6 Average1 0.5 (±0.1) 0.1 (±0.1) 0.2 (±0.1) Max Average1 Max Average1 Max 1.0 20 (±7) 135 22.3 (±0.6) 1 0 155.0 0.5 21 (±7) 272 24 (±1) 587 8 2.0 23 (±11) 190 24 (±2) 229 Concentration JRC HR-FTIR Average1 Max 1Average concentration (ppm) of the three tests performed per vehicle. Max refers to the maximum concentration registered value (ppm) during the three t t tests. 3/28/2014 8 NH3 & GGTR Date 08.03.2013 Name of the file WLTP-2013-016 Consolidated Draft GTR 08.03.2013.docx Modifications after VP2 for AP 2014 Annex 5: test equipment and calibrations: 7.1.1. Extractive sampling ,,,, 7.1.1.1,,, and following (numbers may change in the new version). 28 March 2014 9 Pg 179/ GTR version 8th MARCH 2013 7.0 Additional sampling and analysis methods 7.1. Sampling and analysis methods for NH3 NH3 sampling is done in the undiluted exhaust gas. gas The analyser shall be installed either within an analyser cabinet using extractive sampling in accordance with the instrument manufacturer manufacturer’s s instructions or directly in the exhaust pipe (in-situ). 7.1.1. Extractive sampling 7.1.1.1. The sample p p path up-stream p of the analyser y (sampling line, pre-filter(s), pumps and valves) shall be made of stainless steel or PTFE and shall be heated to set point between 110 and 190 °C in order to minimize NH3 losses and sampling artefacts. In addition, the sampling line shall be as short as practically possible. On manufacturers request a temperature between 110 and 133 °C can be chosen. VP2 – NH3 D Doc 06 06-27# 27# 1 Docs loaded in: https://www2.unece.org/ wiki/display/trans/WLTP+ 6th+session 2 VP2 for AP RCHO & EtOH 1 2’ OPEN QUESTIONS & NEXT STEPS for AP (after 6th WLTP Vienna; March 2014- Phase 1b) RCHO sampling system for DNPH cartridges “classical method” Formaldehyde Acetaldehyde and Ethanol Sampling: diluted exhaust For Adehyde and Formaldehyde we still need confirmation y to that the online instrumentation is available and ready be used 28 March 2014 12 5 ml of fresh prepared solution of: ELUTION OF CARTRIGE CH3CN / H2O milliq (50:50) ELUTED sample DNPH Cartridge R O2N 1 mLL O NO2 NH NO2 R' R' NH2 O2N R, R'= H or CHn NH N=C R P The method described has been developed on the TURBOVAP basis of the “compendium of Methods for the Determination of Toxic Organic Compounds in AmbienT Air (2nd Edition)” EPA/625/R-96/-1-b; Compendium Method TP-11A: Determination of Formaldehyde in Ambient Air U i Using Ab Absorbent b t Cartridge C t id Followed F ll db by High Hi h Performance Liquid Chromatography (HPLC) HPLC- UV impingers for EtOH “classical classical method method” Sampling: diluted exhaust HORIBA continuous measurement system for EtOH: Fourier Transform Infra-Red (FTIR) Gas Analyzer For EtOH we still need confirmation that the online y to be used instrumentation is available and ready 28 March 2014 14 How to progress after 6th WLTP Vienna March 2014 (Phase 1B) 2’ WLTP Phase 1b Info to GTR WLTP 5 69 6 10 11 12 1 7 Round Robin 8 9 2 3 4 5 6 Phase2 ToR gtr informal document 1 0 1 1 7 8 9 10 11 12 1 169 9 Formaldehyde Acetaldehyde EtOH Fix organization, p responsibilities and time schedule NH3 8 73 7 168 6 NH3 68 GRPE 5 72 WP.29 4 167 3 Slight modification 2 2015 71 1 70 2014 gtr formal document 1 1 3 2 1 4 Phase2 20 2 6th WLTP Session; Vienna 28th March 2014 Report on NH3 results from the VP2 Sept 203 Doc 06-27e Docs loaded in: https://www2.unece.org/wiki/display/trans/WLTP+6th+session ttps // u ece o g/ /d sp ay/t a s/ 6t sess o Thanks for your attention (Questions....?) 28 March 2014 My acknowledgement to all participants in AP VP2 17