3. (b) Light vehicles: Global Technical Regulation No. 15 on Worldwide harmonized Light vehicles Test Procedures (WLTP)
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14. The Vice-Chair of the IWG on WLTP reported on the progress made by the group on each of the tasks of the Phase 2 activities (GRPE-74-11).
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GRPE-74-11 | Status report of the WLTP informal group
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15. The drafting coordinator of the IWG on WLTP presented ECE/TRANS/WP.29/GRPE/2017/7 on amendments to UN global technical regulation (GTR) No. 15 on WLTP. He also presented GRPE-74-02-Rev.1 introducing some changes to ECE/TRANS/WP.29/GRPE/2017/7 and he referred to GRPE-74-03-Rev.1 as a consolidated version of both documents. He introduced the technical report on the further development of WLTP (GRPE-74-05). He clarified that the technical report was a consolidated version combining all phases of the development of GTR No. 15 up to now.
16. GRPE adopted ECE/TRANS/WP.29/GRPE/2017/7 as amended by Annex V to this report and requested the secretariat to submit it to WP.29 and the Executive Committee of the 1998 Agreement (AC.3) for consideration and vote at their June 2017 sessions as draft Amendment 2 to GTR No. 15 on WLTP. GRPE also adopted the technical report (GRPE-74-05) as reproduced in Addendum 1 to this report and requested the secretariat to submit it to WP.29 and AC.3 for consideration and vote at their June 2017 sessions.
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GRPE-74-02/Rev.1 | Proposal for amendments to ECE/TRANS/WP.29/GRPE/2017/7 (Amendment 2 to GTR No. 15)
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Proposal for amendments to ECE/TRANS/WP.29/GRPE/2017/7 (Amendment 2 to GTR No. 15)
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Reference Number: GRPE-74-02/Rev.1
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WLTP informal working group refinements to the amendment proposal.
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Document date: 12 Jan 17
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Relevant to
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View full document file for more information
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GRPE-74-03/Rev.1 | Consolidated revision of GTR No. 15 incorporating Amendment 2
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Consolidated revision of GTR No. 15 incorporating Amendment 2
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Reference Number: GRPE-74-03/Rev.1
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Complete version of GTR No. 15 including the proposed Amendment 2 (GRPE/2017/7) and latest refinements by the WLTP informal group (GRPE-74-02). Amendment 2 corresponds to phase 2a development of the GTR, including the following modification to the text: - If an alternative value is applied for a parameter, such as a higher n_min_drive or an ASM, this parameter value has to be the same within an interpolation family (Paragraph 5.6.1.).
- The mass in running order used for the calculation of the power to mass ratio is replaced by mass in running order minus 75 kg (paragraph 1. of Annex 1).
- Idle engine speed n_idle is removed from the power curve measurement requirement (paragraph 2. of Annex 2).
- The additional safety margin (ASM) value may be decided by manufacturer rather than the prescribed exponential curve (paragraph 3.4. of Annex 4).
- The number of decimal place of road load coefficients is defined (paragraph 2.4. of Annex 4).
- Additional restrictions are set to the application of the split run method for coastdown testing (paragraph 4.3.1.3.4. of Annex 4).
- Specific data rejection criteria are added (paragraph 4.3.1.4.3. of Annex 4).
- The “delta method” for road load determination is added (paragraph 6.8. of Annex 4 and other paragraphs. See section 4.4.25.for more detail).
- The roller radius correction factor is modified(paragraph 6.6.3. of Annex 4).
- The allowable combination of the test vehicle selection and family requirements are further clarified (paragraph 4.2.1.3. of Annex 4 and other paragraphs of Annex 4).
- Provisions for an additional cooling fan are included(paragraph 1.1.5. and 1.1.6. of Annex 5).
- The correction of measurement/recording frequency requirements are specified (over several annexes).
- Calculation of the n/v ratio is defined (paragraph 8. of Annex 7).
- The stepwise procedure for calculating the final test results of OVC-HEVs is added (paragraph 4.6. of Annex 8).
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Document date: 12 Jan 17
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Document status: Superseded
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Relevant to
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View full document file for more information
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GRPE-74-05 | Technical report on the development of global technical regulation No. 15 on WLTP including Amendment 2
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Technical report on the development of global technical regulation No. 15 on WLTP including Amendment 2
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Reference Number: GRPE-74-05
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Official technical report detailing the rationale and decision-making behind the development of Amendment 2 (Development Phase 2a) of GTR No. 15.
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Document date: 04 Jan 17
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Document status: Superseded
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Relevant to
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View full document file for more information
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GRPE/2017/7 | Proposal for Amendment 2 to global technical regulation No. 15
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Proposal for Amendment 2 to global technical regulation No. 15
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Reference Number: GRPE/2017/7
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Amended Phase 2a Worldwide Light vehicles emissions Test Procedure (WLTP). Versions of the amended GTR highlighting the changes to the original regulation are available in word format and pdf format. The amendments address: - If an alternative value is applied for a parameter, such as a higher n_min_drive or an ASM, this parameter value has to be the same within an interpolation family (Paragraph 5.6.1.).
- The mass in running order used for the calculation of the power to mass ratio is replaced by mass in running order minus 75 kg (paragraph 1. of Annex 1).
- Idle engine speed n_idle is removed from the power curve measurement requirement (paragraph 2. of Annex 2).
- The additional safety margin (ASM) value may be decided by manufacturer rather than the prescribed exponential curve (paragraph 3.4. of Annex 4).
- The number of decimal place of road load coefficients is defined (paragraph 2.4. of Annex 4).
- Additional restrictions are set to the application of the split run method for coastdown testing (paragraph 4.3.1.3.4. of Annex 4).
- Specific data rejection criteria are added (paragraph 4.3.1.4.3. of Annex 4).
- The “delta method” for road load determination is added (paragraph 6.8. of Annex 4 and other paragraphs. See section 4.4.25.for more detail).
- The roller radius correction factor is modified(paragraph 6.6.3. of Annex 4).
- The allowable combination of the test vehicle selection and family requirements are further clarified (paragraph 4.2.1.3. of Annex 4 and other paragraphs of Annex 4).
- Provisions for an additional cooling fan are included(paragraph 1.1.5. and 1.1.6. of Annex 5).
- The correction of measurement/recording frequency requirements are specified (over several annexes).
- Calculation of the n/v ratio is defined (paragraph 8. of Annex 7).
- The stepwise procedure for calculating the final test results of OVC-HEVs is added (paragraph 4.6. of Annex 8).
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Document date: 28 Oct 16
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Document status: Superseded
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Relevant to
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View full document file for more information
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17. The expert from EC presented ECE/TRANS/WP.29/GRPE/2017/3 on a draft new GTR on evaporative emission test procedure for WLTP (WLTP EVAP). He clarified that the current proposal focuses on the evaporative emissions that can occur during parking events, so running losses and refuelling emissions are out of the scope for the time being. He explained that the test procedure for sealed fuel tank systems will be introduced at a later stage. He introduced the technical report on the development of the draft new GTR (GRPE-74-04).
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GRPE-74-04 | Draft technical report on the development of a new global technical regulation on Evaporative emission test procedure for the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Draft technical report on the development of a new global technical regulation on Evaporative emission test procedure for the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Reference Number: GRPE-74-04
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Document date: 04 Jan 17
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Relevant to
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View full document file for more information
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GRPE/2017/3 | Proposal for a new GTR on evaporative emissions test procedures under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Proposal for a new GTR on evaporative emissions test procedures under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Reference Number: GRPE/2017/3
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Text prepared by the Evaporative emissions Task Force of the WLTP informal working group in line with Phase 2 of its mandate (ECE/TRANS/WP.29/AC.3/44). The WLTP referred to a first draft of this proposal (GRPE-73-12) at the seventy-third session of GRPE (see report ECE/TRANS/WP.29/GRPE/73, para. 12).
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Document date: 25 Oct 16
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Document status: Superseded
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Relevant to
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View full document file for more information
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18. The expert from ETRMA presented GRPE-74-10 to highlight that emissions from tyres should be excluded from the test procedure in the draft new GTR on WLTP EVAP. He explained that tyres should be removed at the stage of vehicle preparation, since they are not part of the fuel storing system and they may add some uncertainty to the test.
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GRPE-74-10 | Highlights related to ECE/TRANS/WP.29/GRPE/2017/3 on WLTP EVAP
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Highlights related to ECE/TRANS/WP.29/GRPE/2017/3 on WLTP EVAP
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Reference Number: GRPE-74-10
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Pursuant to the development of a GTR on evaporative emissions under the WLTP informal group, ETRMA presents its views on the draft procedure in order to clarify the role of tyres.
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Submitted by: ETRMA
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Document date: 11 Jan 17
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Relevant to
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View full document file for more information
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19. GRPE adopted ECE/TRANS/WP.29/GRPE/2017/3 and requested the secretariat to submit it to WP.29 and AC.3 for consideration and vote at their June 2017 sessions as a new draft GTR on evaporative emission test procedure for WLTP (WLTP EVAP). GRPE also adopted the technical report (GRPE-74-04) as reproduced in Addendum 2 to this report and requested the secretariat to submit it to WP.29 and AC.3 for consideration and vote at their June 2017 sessions.
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GRPE-74-04 | Draft technical report on the development of a new global technical regulation on Evaporative emission test procedure for the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Draft technical report on the development of a new global technical regulation on Evaporative emission test procedure for the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Reference Number: GRPE-74-04
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Document date: 04 Jan 17
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Relevant to
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View full document file for more information
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GRPE/2017/3 | Proposal for a new GTR on evaporative emissions test procedures under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Proposal for a new GTR on evaporative emissions test procedures under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
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Reference Number: GRPE/2017/3
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Text prepared by the Evaporative emissions Task Force of the WLTP informal working group in line with Phase 2 of its mandate (ECE/TRANS/WP.29/AC.3/44). The WLTP referred to a first draft of this proposal (GRPE-73-12) at the seventy-third session of GRPE (see report ECE/TRANS/WP.29/GRPE/73, para. 12).
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Document date: 25 Oct 16
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Document status: Superseded
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Relevant to
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View full document file for more information
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20. The expert from EC presented a status report on the WLTP Task Force dealing with the transposition of WLTP into the 1958 Agreement (GRPE-74-20). He informed that the Task Force had not met yet, but the first meeting would take place in February 2017. For the [adaptation] of the 1958 Agreement to include WLTP, he explained the intention was to follow a two-step approach: first, introduction of transitional provisions in Regulations Nos. 83 and 101 (see paras. 11-13 above); second, full transposition of GTR No. 15 into new Regulations under the 1958 Agreement. He recalled previous presentations by EC and the Secretariat on possible ways to structure these new Regulations (GRPE-72-18 and GRPE-73-26).
21. GRPE agreed to further discuss the transposition of WLTP into the 1958 Agreement at the next GRPE session on the basis of the work carried out by the WLTP Task Force dealing with this topic.
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GRPE-74-20 | Transposition of GTR 15 (WLTP) into UN Regulations under the 1958 Agreement
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Transposition of GTR 15 (WLTP) into UN Regulations under the 1958 Agreement
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Reference Number: GRPE-74-20
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European Commission report on the effort to transpose the GTR on light vehicle emissions into UN type approval regulations, including handling of current UN Regulations on emissions (notably, UN R83 and UN R101) and process for implementing the WLTP requirements.
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Submitted by: EC
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Document date: 12 Jan 17
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Relevant to
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View full document file for more information
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GRPE-72-18 | Transposition of GTR No. 15 WLTP into EU Regulations and UN/ECE Regulations
GRPE-73-26 | Comments on the transposition process of GTR No. 15 (WLTP) into UN Regulation (1958 Agreement)
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22. GRPE acknowledged the progress made by the IWG on WLTP and noted the request for a meeting room for one day during the GRPE week in June 2017.
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