Explanation of the proposal (GRPE/2018/19) to align UN R24 (Compression Ignition Engines – Emission of Visible Pollutants – Power Measurement) with UN R85 with regard to correction factors.

38. The expert from OICA presented GRPE-77-20 that improves the justification of ECE/TRANS/WP.29/GRPE/2018/19 by proposing a solution to align the provisions of the 03 series of amendments to UN Regulation No. 24 with UN Regulation No. 85. GRPE adopted the proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2018 sessions as draft Supplement 4 to the 03 series of amendments to UN Regulation No. 24.

Proposal to align UN R24 (Compression Ignition Engines – Emission of Visible Pollutants – Power Measurement) with UN R85 with regard to correction factors.

38. The expert from OICA presented GRPE-77-20 that improves the justification of ECE/TRANS/WP.29/GRPE/2018/19 by proposing a solution to align the provisions of the 03 series of amendments to UN Regulation No. 24 with UN Regulation No. 85. GRPE adopted the proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2018 sessions as draft Supplement 4 to the 03 series of amendments to UN Regulation No. 24.

This document addresses the need to align Regulation No.115 to the new WLTC test cycle, defined in the GTR 15 and in the Commission Regulation (EU) 2017/1151 and later modifications.

39. The expert from Italy introduced GRPE-77-09 on the need to update UN Regulation No. 115 and the need to introduce a reference to WLTP instead of emission tests performed on the basis of the former test cycle (New European Driving Cycle (NEDC)). He proposed to host a meeting with all interested parties in order to develop a working document that would be presented at the January 2019 session of GRPE. He mentioned the letter from the expert of AEGPL showed support to the idea and interest to participate in the activities (GRPE-77-23). He stated that the difficulty for this work was that WLTC was not yet included in a UN Regulation but in a UN GTR.

AEGPL views on the proposal to align Regulation No.115 to the new WLTC test cycle, defined in the GTR 15 and in the Commission Regulation (EU) 2017/1151 and later modifications.

39. The expert from Italy introduced GRPE-77-09 on the need to update UN Regulation No. 115 and the need to introduce a reference to WLTP instead of emission tests performed on the basis of the former test cycle (New European Driving Cycle (NEDC)). He proposed to host a meeting with all interested parties in order to develop a working document that would be presented at the January 2019 session of GRPE. He mentioned the letter from the expert of AEGPL showed support to the idea and interest to participate in the activities (GRPE-77-23). He stated that the difficulty for this work was that WLTC was not yet included in a UN Regulation but in a UN GTR.

Proposal to introduce an alternative test method for measuring charge-air-cooled engines net power for use with high power engines of those. The proposal would “decrease the charge air cooler outlet temperature by the same amount that the ambient conditions for the vehicle test varied from the standard temperature” in line with SAE J1349, “9.3 Application of Vehicle Transient Data to Net Power Test.”

40. The expert from OICA presented GRPE-77-06 proposing a new Supplement to UN Regulation No. 85 (Measurement of the net power) amending provisions on power measurement of air-cooled high-power engines. The expert from the Netherlands needed more clarifications on the actual proposal. The expert from OICA stated all questions would be answered before the next session of GRPE in January 2019.