Series of proposals from the WLTP informal group to improve and clarify the text of GTR 15 on light vehicle emissions. This document is also available with track changes: pdf version and doc version.

Proposal to align UN R115 with the GTR No. 15 WLTC test cycle.

Proposal to introduce improvements and amendments concerning the evaporative emission family definitions and the Type 4 test procedures with regard to test equipment requirements and calibrations, evaporative emission measurement enclosures, and use of variable volume SHED facilities. The document is also available in versions with track changes: pdf format and doc format.

Proposal to clarify the meaning and use of “peripheral devices”.

Proposal to align the provisions of the 03 series of amendments to UN R24 with UN R85. Other amendments are proposed in order to bring the format of UN R24 up to date.

Proposal to reduce testing burdens by introducing an alternative test method to “decrease the charge air cooler outlet temperature by the same amount that the ambient conditions for the vehicle test varied from the standard temperature.” This aligns with SAE J1349, “9.3 Application of Vehicle Transient Data to Net Power Test.”

Proposal to clarify the relationship between approval levels, reference fuels and PN limits for PI vehicles and to modify the calculation formulae for determination of evaporative emissions in accordance with changes already agreed in UN GTR No. 19.

Proposal to expand the scope of UN R24 to include Category T vehicles (agricultural and forestry tractors).

Proposal from the GRPE secretariat to correct omissions found in document WP.29/2018/148 (proposal for Supplement 8 to the 07 series of amendments) as adopted by WP.29. This document can also be downloaded in marked up .pdf and word versions with tracked changes.

Proposal for amendments to the draft supplements to the 06 and 07 series of amendments to:

1. correct errors in Working Paper 2019.08,
2. expand 2019.08 to clarify the special provisions, and
3. resolve a current contradiction of requirements concerning the provision of SCR reagent consumption data via the serial port of the standard diagnostic connector.

Presentation raising concerns during the transition from NEDC to WLTP and proposing measures to facilitate this transition pending adoption of WLTP under the 1958 Agreement.

Proposals from the WLTP informal group to clarify and make editorial corrections to its original submission (document GRPE/2019/2).

Proposal to correct and clarify provisions of the regulation.

Proposal for amendments to the draft supplements to the 06 and 07 series of amendments to:

1. correct errors in Working Paper 2019.08,
2. expand 2019.08 to clarify the special provisions, and
3. resolve a current contradiction of requirements concerning the provision of SCR reagent consumption data via the serial port of the standard diagnostic connector.

Editorial corrections from the WLTP informal to its original submission.

Amendments to GTR (WLTP) as approved by GRPE based upon documents GRPE/2019/2 and GRPE-78-25/Rev.1. The amendment package will be sent to WP.29 for consideration during its June 2019 session.

Amendment 2 to UN GTR No. 19 (WLTP EVAP) as approved by GRPE based upon documents GRPE/2019/4 and GRPE-78-28.