DTP/DHC update

1. DTP/DHC update

2. DTP • 13th to 15th April, EPA, Ann Arbor • Chair: Michael Olechiw (co-chair from India unable to attend) • No great advances were made in developing a test procedure • But, key agreements were reached that should allow for quicker development over coming months

3. DTP • Meeting well attended, with good representation from European Member States and industry • Ed Nam opened the meeting, stressing that the key focus was to develop harmonised test procedures that would drive technology improvements • Terms of reference were agreed (largely similar to DHC terms of reference)

4. DTP • Indian delegation presented a comparison of Contracting Parties’ existing legislation • well received by DTP group • Industry keen that this approach is used to pick the best bits of existing legislation • Some support from other Contracting Parties

5. DTP • US gave several presentations • 40 CFR part 86 • How to test hybrid vehicles • California Exhaust Standards • Hydrocarbons • Tour of EPA facilities

6. DTP • ACEA gave a presentation • Focussed on the “headline” areas of testing • Favour a comparison of existing legislation and suggest where these differ to adopt the most stringent requirements for WLTP • Made some interesting proposals for testing HEVs, EVs

7. DTP • Subgroups • It was agreed to establish a number of subgroups to work on specific issues: • Particle measurement • Emissions measurement • Laboratory measurements (physical measurements) • Fuel standards group • Volunteers were sought to lead and participate in the subgroups

8. DTP • Key agreements • Establishment of subgroups • Appointment of technical secretary • DHC/DTP chairs to present a paper to WLTP clearly defining the roles of the two groups • Revision of project plan to take into account subgroups • Unresolved • How to develop the test procedure (use CFR part 86 as basis, or continue with comparison exercise)?

9. DHC • Short meeting on morning of 15th April (just as Eyjafjallajokull started to erupt…) • Contracting Parties were reminded to submit their data collection plans (EU still to do this, although we have indicated that data will be sent to Japan by September) • Data collection is underway in South Korea and is completed in Japan • US also have a large amount of data ready to submit

10. DHC • Alternative analysis technique • Japan presented their alternative analysis technique • Data would be binned into low/medium/high speeds and then analysed accordingly • There was also a correction to the application of weighting factors (taking into account the need to normalise some datasets) • It was agreed to note the presentation and alternative analysis technique • In the mean time, the methodology set out in WLTP-DHC-02-4 would be followed until this methodology is proved not fit for purpose

11. DHC • ACEA/EU presentations (by Heinz Steven) • Overview of initial analysis of existing ACEA data (more or less the same presentation that was given to EU WLTP at the March meeting) • Questions were raised regarding the order of short trips (need for DHC to analyse in-use data to help determine the order) • Agreed to note the conclusions and for these to be considered before the next DHC meeting (there will be a working group level meeting between Japan, JRC, Heinz, etc in Geneva before the full DHC meeting)

12. DCH • ACEA/EU presentation on road type, and driving period • Heinz also presented his investigation into road type and driving period (this was also shared at the March EU WLTP meeting) • DHC agreed to note the conclusions and consider these further as more in-use data becomes available for analysis

13. Next meetings • The next DHC, DTP and WLTP meetings will be held on 9th June, Geneva • There will be a joint DHC/DTP meeting in September (hoped to be in Europe)