DTP/DHC update

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

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)

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

DTP

• US gave several presentations– 40 CFR part 86– How to test hybrid vehicles

• California Exhaust Standards– Hydrocarbons– Tour of EPA facilities

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

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

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)?

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

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

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)

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

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)