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Steering Group Meeting on Simulation State-of-play of SGS Activities

This meeting provides updates on the activities of the Simulation Steering Group, including finalizing the vehicle list, meta-model comparison, accuracy requirements for cruise simulation, and test protocol applications. It also discusses complementary studies in Germany, France, the Netherlands, UK, and Sweden.

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Steering Group Meeting on Simulation State-of-play of SGS Activities

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  1. Meeting of the Steering Group on SimulationState-of-play of SGS ActivitiesMunich, 25 June 2014 Biagio Ciuffo Georgios Fontaras StefanosTsiakmakis Alessandro Marotta JRC

  2. Agenda • Minutes approval and next SGS meetings • Update on LAT, JRC, complementary studies • Finalization of the vehicle list for both M1 and N1 vehicles • Meta-model comparison • Accuracy requirements for Cruise simulation • Test Protocol application check • AOB

  3. Next SGS meeting and minutes SGS face-to-face meeting in the same week or in the week before the TWG meeting (likely to be in the week 22-26)? Brussels on September 22 might be a possibility Any comment on the Minutes of the last meeting?

  4. Update on LAT work

  5. JRC testing activities • Completed tests • Audi A4, Volvo V40, Fiat 500, Fiat Punto • On-going/scheduled tests • AR Giulietta, Honda CR-Z, Toyota Prius • Possible additional tests • VW Passat, 1 N1-III vehicle (if EU6 the test is possible end September) • FIAT tests • Completed for all 5 vehicles • Results already discussed for 3 (Punto, 500, and Giulietta) • Cross-comparison successful for Punto and 500. Discussion had last week in Ispra for both tests and models. • A final cross-comparison report will be submitted to the SGS before the next meeting • The remaining 2 vehs (Mito and 500AT) will not be tested in Ispra

  6. JRC modeling activities • Development of Compas • A complete robust model for the Fiat Punto has been developed. Several modules have been added (ranging from electric to different temperature effects, etc.) • A Cruise template (for the segment) has been derived from this work. It will be presented to the SGS during the meeting. • Now that a model has been finalized, the SA of Cruise can be carried out. We plan to complete it during the month of August to check whether Compas already includes the main parameters for both CO2 and Delta(CO2)

  7. Complementary studies Germany.

  8. Complementary studies • France. • Several problems in starting the tests

  9. Complementary studies • The Netherlands • The Dutch program will include 1 N1-III vehicle • The Daimler Sprinter EU6 would be their choice • Possible schedule might be after the end of September

  10. Complementary studies • UK (program tbc end of the year) • 4 vehicles to be tested • Euro 6 (Euro 5 ok but not Euro 4) Ford does not have a EU6 model. EU5 might be Ok. • Pollutant emissions test will be a priority (not shared with the COM) • Minimum 2 diesel vehicles (could be more diesel if necessary) • Ok to source from non-UK producers • Ok to focus on N1 Class III • Is Jaguar F-type 3l gasoline still of interest?

  11. Complementary studies • Sweden. • Complementary study on-going • Test results for the first group of vehicles already sent to JRC (yesterday)

  12. Update on the vehicles list • Available slots • 1-2 additional vehicles at LAT (M1) • 1 additional vehicle at NL (N1) • 2 additional vehicles JRC (N1+M1) • 4 for the UK program (3-4N1) • Needs • N1 vehicles (how many?). Highest priority • M1? • EU6 Diesel Low-pressure EGR • Cylinder deactivation • Other?

  13. Meta-model comparison Evidencefromadditionalresults (ifavailable on time) and the criteria for the choice.

  14. Accuracyrequirementsfor Cruise simulation • Analysis of the problemsfrom LAT simulationsanddiscussion on howto handle them. • Whatabout the requestbyOEMstoachieve the type-approvalvalues even thoughthey are experiencedduring the different tests?

  15. Approach to AT modeling We agreed to approach the AT modeling by using the GTR gear-shift tool on both WLTP and NEDC and then apply a correction based on an exogenous parameter (min engine speed was proposed). No further news since the Munich meeting. How to approach AT modeling in a robust way?

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