1. WLTP-27-02e
Informal document GRPE-79-xxe
(79th GRPE, May 2019, agenda item 3(b))
Request to extend mandate WLTP Informal Working Group and for guidance on future work plan prepared by WLTP IWG
Document has been prepared following initial discussions in WLTP IWG in its 26th session (Zagreb). The document will be revisited in the 27th session (Geneva, 20th of May).
A revision might be issued prior to GRPE.

2. Options for Prolongation Options for Prolongation
Summary
2019
2020
Phase2b Activities
Request for Approval
due to prioritization of UNR transposition, need another 8 months to complete current work items
current Mandate
(source : ECE/TRANS/WP.29/2016/73)
Future Work Plan
(refer next slide)
Request for Guidance
Phase2c :
open for new items, no new authorization
Phase3 : fresh start,
new authorization
Mixed phase 2c + 3
extend till mid 2020
Options for Prolongation
Options for Prolongation

3. original
Current (Phase2b)
future (related) work
Maintenance on GTR#15&#19
Maintenance GTRs (and UNRs)
Test Cycle
HEV system power (EVE IWG responsibility)
Transpose to GTR (and UNR)
Test 23℃
Low temperature 
(Transpose to UNR)
High altitude
(if CP requested)
Durability
Battery (EVE IWG responsibility)
In service conformity
(if agreed)
OBD
Mobile air conditioner
Off cycle / RDE
(RDE IWG responsibility)
Evap emissions
Evaporative test procedure
Other items
Emission limit/OBD thres.
Reference fuel
Comparison regional requirement
Phase1
Reference (WLTP IWG Working Items)
Phase2
Phase3

4. 1. Request to extend Phase 2b mandate 2
1. Request to extend Phase 2b mandate 2. Guidance on future work plan WLTP IWG

5. Mandate WLTP – Phase 2
The WLTP IWG mandate is described in ECE/TRANS/WP.29/2016/73, adopted by WP.29/AC.3 at the 169th session.
ECE/TRANS/WP.29/2016/73 contains both scope of the work under WLTP Phase 2 and the related timeline. It also provides GRPE the possibility to prolongate or extend the mandate.

6. Timeline WLTP – Phase 2 From ECE/TRANS/WP.29/2016/73 III. Timeline
8. The work of the IWG on WLTP Phase 2 should be completed by Phase 2 will be divided into Phases 2a (until June 2017) and 2b (until the end of 2019). The transposition of UN GTR No. 15 on WLTP into new Regulations annexed to the 1958 Agreement should ideally be finalized by the end of 2017 but the work may continue until the end of 2019 without a formal modification of this mandate, if needed due to circumstances.
9. A prolongation and extension of the mandate of the IWG on WLTP should be considered by GRPE in due time.
Adopted by WP.29/AC.3 at the 169th session

7. Scope of work WLTP – Phase 2
Original items described in ECE/TRANS/WP.29/AC.3/26 and Add. 1 shall be kept.
Items not explicitly mentioned in Phase 2 Mandate: CoP, ISC, High altitude, final GTR, reference fuel, emission limits. [Correlation testing, Impact assessment]
Remaining issues from WLTP Phase 1b
Durability for ICE and EV
Evaporative emissions
Low ambient temperature emissions
Test procedure for (…) CO2 emissions and fuel consumption from MAC
On-board diagnostics requirements
Develop criteria for ex-post assessing road load parameters (see WLTP rev1e)
Other items.
Work for Transposition of GTR15 on WLTP into UNR annexed to the 1958 Agreement

8. Deliverables under Phase 2a + 2b
Item
(Expected) deliverable
Timeline
(working doc in GRPE)
Final GTR WLTP
COP
Reference fuel
Emission limits GTR15/Type1
GTR15 Amendment#1-5
UNR WLTP level 1/2–concept
Jan 2016 onwards
Jan 2020
Remains from phase 1b
Durability–ICE
Durability–EV (batt, power)
EVAP
Low T
OBD
Other items: CFD, …
GTR15 Amendment#6
UNR WLTP Type5
EVE IWG, new GTR, UNR WLTP GTR19 Amendment#2
New GTR
June 2020
June 2020(tbc)
Jan 2019
Transpose GTR15 to UNR
UNR WLTP Type1+Type4+Type5

9. Request to GRPE-79 (1)
By June 2020 most of the Phase 2a + 2b items currently under development will be finished (WD to GRPE).
Request-1: extend WLTP Phase 2b mandate by an additional 6 month till mid 2020
And inform WP.29 accordingly (see point 9 of ECE/TRANS/WP.29/2016/73)

10. 1. Request to extend Phase 2b mandate 2
1. Request to extend Phase 2b mandate 2. Guidance on future work plan WLTP IWG

11. Missing items from Phase 2 Mandate
Original items described in ECE/TRANS/WP.29/AC.3/26 and Add. 1:
High altitude: priority given to Low T; pending till CP offers to take the lead
ISC: limited resources, lengthy discussions on feasibility under 1958 Agreement and new RDE developments.
Correlation testing and Impact assessment: no longer considered to be relevant
Phase 2 from ECE/TRANS/WP.29/2016/73
MAC: no CP requested start of activity
Develop criteria ex-post assessing RL: no follow-up after Korean presentation
ECE/TRANS/WP.29/AC.3/26/Add. 1: "9. At its June 2009 session, AC.3 decided to focus the work on the development of the test cycle and the test procedures, and to keep the development test procedures for Off-Cycle Emission (OCE) and Mobile Air Conditioning (MAC) separate from Phase 1. Considering the European Union (EU) decision to apply OCE and MAC procedures by 2014, it was also agreed that GRPE work on developing test procedures for OCE and MAC in an open way and in parallel with Phase 1, so that after completion of the technical work those procedures might be incorporated into the gtr, or in a 1958 Agreement Regulation, or in a EU legal text."

12. Possible additional new items
To do:
Maintenance of GTR15, GTR19
Low T: development of Amendment#1
If requested, develop:
Reference calculation sheet for GTR15 (analogy Gear Shift ACCESS tool)
Family definitions
Remaining issues from Phase 2b
New GTR(s) on Crankcase and Idle emissions to expand UNR with Type3 test
Monitoring inducement SCR …
Other new items
Related work:
Transposition to UNR of Low T, OBD and …

13. Options for prolongation/extension
Phase 2c
Focus on maintenance; open for new items if requested
Reduced intensity
No new authorization required
[2 year extension]
Phase 3
Fresh start: clear marking Phase 2 has delivered and has been closed
Focus on new items (e.g. new GTRs), on top of maintenance
High intensity continued
New authorization, including scope and timeline (proposal to GRPE January 2020)
> 2 year
Mixed: short Phase 2c + new Phase 3
A short Phase 2c to allow for taking stock of outcome of RDE GTR process and European post-Euro6 developments and work for Transposition of Low T and OBD
New Phase 3 authorization in January 2021 (proposal to GRPE)

14. Requests to GRPE-79 (2)
Decision on Phase 2c, Phase 3 or Mixed approach
If decision for Phase 3 only approach, WLTP IWG proposes to deliver a proposal for new authorization to January 2020 session of GRPE.
If decision for Mixed (Phase 2c + 3) approach, proposal for new authorization to January 2021 session of GRPE.
Guidance on items to be included in work plan
Both Phase 2c and Phase 3 will contain maintenance GTRs
Preferred specific items?
Involvement of WLTP IWG in Transposition to UNRs?