Document prepared by the GRPE chair and secretariat to propose areas for short, medium, and long-term attention.

Proposals to inhibit tampering with emissions systems and to facilitate detection of such tampering.

“On Emission of Particulate Matters Less Than 10 Microns to Air Environment of Large Cities and Megalopolises During Operation of Vehicles”, translated from the original documents in Russian (pdf format and .docx format).

Request to extend mandate WLTP Informal Working Group and for guidance on future work plan.

OICA request for clarification on the interpretation of Supplement 6 to the 07 series of amendments to UN R83 which enables the use of compliance assessments of vehicles with a reference mass less than 2,610 kg for the purposes of extending the type approval to special purpose vehicles (including armoured ones) having a reference mass exceeding 2,840 kg.

Update on the status of work regarding the transition from NEDC to WLTP, particularly pending the transposition of GTR 15 into one or more UN Regulations under the 1958 Agreement.

Proposal to clarify “permanent default” and “limp-home mode” in UN R83.

Proposal to amend current definitions to allow fault code erasing in cold regions (< -7°C) and high altitude (> 2440m), harmonizing the definitions with those used in China and the United States.

Proposal to allow for the use of use special denominator conditions for certain components or systems. The current definitions of the specific denominators are based on engine/aftertreatment system combinations designed as one TWC for gasoline vehicles and DOC, DPF and SCR respectively NSC for diesel engines. Upcoming emission requirements will bring up additional aftertreatment components like Gasoline Particulate Filters (GPF) or new designs with more than one SCR catalyst. Such new systems or catalyst combinations might require specific conditions to enable the monitoring, especially when their purpose is designed for such conditions.

This document is also available with tracked changes: pdf format and word format.

Consolidated document to inform and update the GRPE on phase 1 of the OBD2 program.

Proposal to allow an alternative test method to “set the charge air cooler outlet temperature during bench test to temperature which was observed by vehicle test and corrected to the reference temperature specified in paragraph 5.2.1.” of Annex 5. This alternative method is well recognized in SAE J1349.