Official technical report detailing the rationale and decision-making behind the development of Amendment 2 (Development Phase 2a) of GTR No. 15.

Draft text pursuant to the drafters’ group session.

European Commission, Japan, and other stakeholder comments.

Proposal to correct and clarify the text, including to

1. correct the constants for equation (34) to calculate exhaust mass flow using carbon balance method,
2. correct constants used for CVS verification,
3. correct the formula for regression analysis according to Annex 4, Appendix 3, and
4. correct the rise time (to 3.5 s from 2.5 s) for the PEM analyzers under paragraph A.2.2.1. of the 06 series.

Comprehensive amendment of document GRPE/2017/6 to align UN R49 with the latest amendments of EU Euro VI legislation (Reg. EU 2016/1718), including

1. OBD equivalency option for light commercial vehicles to be continued with step ‘D’,
2. editorial corrections (incl. keeping optional THC PEMS measurement for gas engines),
3. implementation dates in Appendix 9 table 1 (2016/1718) and Annex 3 table 1 (R49),
4. implement rejection note for retroactive applicability with regard to in-service conformity (paragraph 13.4.),
clarification of type approval provisions for ‘new vehicle types as of 2017’,
5. deletion of infeasible requirement related to the PEMS test (“…void if … no valid windows left in urban only”), second part of sentence in Annex 8, Appendix 1: A1.4.2.2.2.2.
6. deletion of inconsistency between work based window and CO2 mass based method regarding valid integration windows (A.1.4.2.2.2.2. versus A.1.4.3.1.2.2).

Abstract from JSAE chassis dynamometer testing working group with particular regard to 4WD chassis dynamometer.

Report of the WLTP Transposition Task Force

Summary of the results of the Annex 4 Interest Group work under phase 2a of the development of GTR No. 15.

The purpose of the low temperature test is to check the level of specific pollutant emissions of vehicles in conditions that may easily be encountered during the winter season.

Update on PMP informal group member research into non-exhaust (tyre, brake wear) particle emissions.

Particle numbers are measured via partial dilution or CVS systems under current emissions regulations. This presentation provides information in support of heavy-duty vehicle/engine manufacturer interest in direct measurement of raw PN emissions. ACEA requests the PMP program to further investigate the feasibility to allow PN raw measurement for HD applications.

The subject documents would permit Contracting Parties applying UN R83 and/or UN R101 and which have transposed GTR No. 15 (WLTP) into their local legislation to refuse to accept type approvals granted under the UN R83 and/or UN R101 as a compliance alternative to their national/regional legislation (i.e., aligned with GTR No. 15). OICA proposes to clarify the intent by deleting allusions to the measure as a form of derogation, to replace the phrase “may no longer accept” with “may refuse”, and to introduce a sunset clause to noting that the measure is intended as a stop-gap until such time as GTR No. 15 has been transposed into the corpus of UN Regulations.

Proposal, subject to endorsement by the GRPE during its January 2017 session, to permit Contracting Parties applying UN R83 and GTR No. 15 (WLTP) to refuse type approvals granted under UN R83 as an alternative to compliance with their national/regional legislation from the date of entry into force of Supplement 9 to the 06 series of amendments to UN R83.

Proposal, subject to endorsement by the GRPE during its January 2017 session, to permit Contracting Parties applying UN R83 and GTR No. 15 (WLTP) to refuse type approvals granted under UN R83 as an alternative to compliance with their national/regional legislation from the date of entry into force of Supplement 5 to the 07 series of amendments to UN R83.

Regulation (EU) 2016/1628, also known as the NRMM Regulation or Stage V Regulation, restructures the EU regulation of non-road mobile machinery ranging from lawn mowers to snow mobiles to bulldozers, but excludes agricultural machinery (to be subjected to a separate EU regulation). In order to maintain the alignment between UN Regulations on emissions and EU emissions regulations, the EC proposes GRPE work on a new series of amendments to UN R96 (and by extension UN R120) for publication in 2018.

Proposal, subject to endorsement by the GRPE during its January 2017 session, to permit Contracting Parties applying UN R101 and GTR No. 15 (WLTP) to refuse type approvals granted under UN R101 as an alternative to compliance with their national/regional legislation from the date of entry into force of Supplement 7 to the 01 series of amendments to UN R101.

In line with the need to update UN R96 in response to the new EU Stage V NRMM regulation, Regulation (EU) 2016/1628 would impact UN R132. Therefore, EUROMOT recommends updating UN R132 in parallel with UN R96 and UN R120. In particular, EUROMOT proposes establishing a specific annex to UN R132 in light of the similar stringencies of EURO VI heavy duty emissions requirements and those of NRMM Stage V that would specify all the necessary additional requirements for Stage V (in a manner similar to the existing Annex 12 for emission levels equivalent to the 06 series of amendments of UN R49).

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.

Proposal to ensure that all replacement pollution control devices conform with the intent of UN R49 and to align UN R49 in this regard with Regulation (EU) 2016/1718. CLEPA proposes the establishment of a new annex under UN R49-05 R.49-05 to restrict the approval of a replacement device to one that “enables the engine and vehicle to comply with the rules with which it was originally in compliance”.

Pursuant to GRPE discussions, the proposal adds the following paragraph to the amendment:
“At the manufacturer’s request, type approval granted under this Regulation may be extended from vehicles mentioned above to special purpose vehicles of categories M1, M2, N1 and N2 regardless of their reference mass. The manufacturer shall demonstrate to the Type Approval Authority which granted the type approval that the vehicle in question is a special purpose vehicle.”

Report on the status of the International Whole Vehicle Type Approval program with regard to regulations under the purview of GRPE.

WLTP informal working group refinements to the amendment proposal.

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:

1. 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.).
2. 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).
3. Idle engine speed n_idle is removed from the power curve measurement requirement (paragraph 2. of Annex 2).
4. The additional safety margin (ASM) value may be decided by manufacturer rather than the prescribed exponential curve (paragraph 3.4. of Annex 4).
5. The number of decimal place of road load coefficients is defined (paragraph 2.4. of Annex 4).
6. Additional restrictions are set to the application of the split run method for coastdown testing (paragraph 4.3.1.3.4. of Annex 4).
7. Specific data rejection criteria are added (paragraph 4.3.1.4.3. of Annex 4).
8. 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).
9. The roller radius correction factor is modified(paragraph 6.6.3. of Annex 4).
10. 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).
11. Provisions for an additional cooling fan are included(paragraph 1.1.5. and 1.1.6. of Annex 5).
12. The correction of measurement/recording frequency requirements are specified (over several annexes).
13. Calculation of the n/v ratio is defined (paragraph 8. of Annex 7).
14. The stepwise procedure for calculating the final test results of OVC-HEVs is added (paragraph 4.6. of Annex 8).

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.

Proposal to add the following paragraph to the draft amendment presented in document WP.29/2016/87:

9. Entry into force

The provisions set in Revision 2 to Rule No. 1 on uniform provisions for Periodical Technical Inspections of wheeled vehicles with regard to the protection of the environment shall enter into force on 1 June 2018.

Proposal to restrict the application of CO2 specific emission limits only to NMHC and CO emissions (back-to-back comparison of NOx and PM to apply under the regulation in any case). The proposal also aligns the text where applicable with the intent of paragraph 2.3.15.: “R49 original emission limits” means the emission limits as defined in Regulation No. 49 to which the original engine system was approved."

Japan’s proposal for EPPR-17-08 (EPPR-11-15e Rev.3) B.2.

Proposal to align the entry into force of the draft Revision 2 to Rule No. 1 and Revision 1 to Rule No. 2 with the application date of the corresponding requirements set in the roadworthiness directives of the European Union to facilitate application by Contracting Parties to the 1997 Agreement that are also member-states of the European Union.

Positions of participants and consensus within the EPPR informal group on amendments to GTR No. 2.

This proposal has been prepared by the EPPR IWG Secretary, in close collaboration with WLTP IWG experts, in order to align the definitions of chassis dynamometer rollers between EPPR and WLTP GTRs. The content of this overview has been followed by WLTP although the specific definitions are not contained in GTR No. 15. This proposal recommends elaborating and introducing such definitions into the EPPR GTRs.

Updated proposal from the version presented to the January 2017 GRPE session prepared for the 18th VIAQ informal group session.

India comments on certain draft proposals for the amendment of GTR No. 2 on motorcycle emissions contained in the unpublished version 4 of document EPPR-11-15 (only Version 2, EPPR-11-15/Rev.1, has been made available).

Improvements to the amendment to UN Rule No. 1 proposed by document WP.29/2016/87.

Latest refinements from the PTI informal group to the proposal to harmonize the provisions of UN Rule No. 1 with those of the latest UN Regulations annexed to the 1958 Agreement and the EU Directives.

Proposal from the PTI informal group to establish inspection requirements for natural-gas-powered vehicles under the 1997 Agreement.

Observation by Russia that the proposals to allow Contracting Parties to refuse to accept type approvals granted under UN R83 and/or R101 based upon application of GTR 15 (WLTP) runs counter to the provisions of Revision 3 to the 1958 Agreement.

Adopted technical report on the development of draft Amendment 2 to global technical regulation No. 15 on Worldwide harmonized Light vehicles Test Procedures (WLTP).

Adopted technical report on the development of the draft new global technical regulation on evaporative emissions test procedure for use under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP).

This proposal is also available in versions with tracked changes: portable document format (.pdf) and Microsoft word format (.docx).

OICA view that no standardized accelerated aging test methods are available which are providing a fair and representative aging estimation.

Update on EVE subgroup activities for Part B

Discussion document considering approaches for the transposition of GTR No. 15 into a type-approval regulation appropriate for EU application.

KATRI presentation on a 2011 defects investigation responding to complaints of exhaust gases inside vehicles, testing for carbon monoxide inside vehicle cabins, and the development of a test procedure to assess the presence of exhaust gases inside the occupant cabin.

SAE paper comparing GCMS/HPLC to the Voice200 ultra, a specialized real-time instrument utilizing the technique selected ion flow tube mass spectrometry (SIFT-MS) to analyze vehicle interior air.

Proposal to allow, at the manufacturer’s request, extension of a type approval to special purpose vehicles of categories M1, M2, N1 and N2 regardless of their reference mass provided the manufacturer demonstrates that the vehicle in question is a special purpose vehicle. This aligns UN R83 with EU Directive 2007/46/EC where approvals of vehicles with a reference mass less than 2,610 kg can be extended to special purpose vehicles exceeding 2,840 kg (e.g., armored vehicles).

Proposal to harmonize the provisions of UN Rule No. 1 with those of the latest UN Regulations annexed to the 1958 Agreement and the EU Directives.

Proposal to allow, at the manufacturer’s request, extension of a type approval to special purpose vehicles of categories M₁, M₂, N₁ and N₂ regardless of their reference mass provided the manufacturer demonstrates that the vehicle in question is a special purpose vehicle. This aligns UN R83 with EU Directive 2007/46/EC where approvals of vehicles with a reference mass less than 2,610 kg can be extended to special purpose vehicles exceeding 2,840 kg (e.g., armored vehicles).

Proposal to restrict the application of CO2 specific emission limits only to NMHC and CO emissions (back-to-back comparison of NOx and PM to apply under the regulation in any case). The proposal also aligns the text where applicable with the intent of paragraph 2.3.15.: “R49 original emission limits” means the emission limits as defined in Regulation No. 49 to which the original engine system was approved."

CPC Calibration Round Robin exercise: Proposal for second stage.

Version 4 of the proposal.

Working draft summary of the PMP informal group program for the development of a common test procedure for sampling and assessing brake wear particles both in terms of mass and number emissions.

Swiss report on circumvention of pollution-control systems through the use of aftermarket AdBlue emulators that stop AdBlue injection while preventing detection of the failure by the engine management system.

Report on the development of Amendment 3 to GTR 15 on light vehicle emissions. The amendment aims to:

1. clarify phase, cycle and vehicle class terminology to enable interpolation between different levels of downscaling, cycle classes and speed caps (resulting in modifications to WLTC cycle phases and time/speed tables),
2. improve the gear shifting procedures, including changes to gear selection and shift point determination for vehicles equipped with manual transmissions,
3. define the possible and permissible combinations of test vehicle selection and family requirements,
4. define the calculation of the average test mass during road load determination,
5. define single and double roller dynamometers, and
6. make editorial improvements.