GAR | GRPE-87-16/Rev.1

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Document Title	UN R85: Proposal to amend GRPE/2023/7
Reference Number	GRPE-87-16/Rev.1
Date	11 Jan 2023
Summary	Proposal to promote harmonisation in use of reference fuels for testing, including hydrogen fuel, based on the following justifications: The use of test fuels is permitted for certification testing of gaseous and particulate pollutants and power/smoke testing in Europe. However, other countries that have adopted and referenced UN R85 may not allow this. In this case, manufacturers have to prepare fuels with different characteristics, which is costly and requires a long time due to the current inconsistent situation. We believe that the use of test fuels for gaseous and particulate pollutant measurement tests should be a priority as a precondition for the introduction of more stringent emission levels. Hydrogen fuelled vehicles are covered in UN Regulation No. 83, but hydrogen is not yet covered in UN R49 and UN R85. Hydrogen fuelled engines could be one complementary option to reduce CO₂ emissions of future heavy-duty vehicles. Therefore, hydrogen fuel should be integrated in UN R49 and UN R85 for better alignment with UN R83.
Source(s)	OICA
Rulemaking Area(s)	UN R85 Net Power Measurement
Proposal Status	Superseded
Meeting(s)	GRPE \| Session 87 \| 10-13 Jan 2023 5. UN Regulations Nos. 24, 85, 115, 133 and 143 5. UN Regulations Nos. 24, 85, 115, 133 and 143
Related Documents
	GRPE/2023/7		UN R85: Proposal for a new Supplement (superseded)
	GRPE-89-29		UN R49: Proposals for type approval of H2 engines
	WP.29/2023/64		UN R85: Proposal for Supplement 12 (adopted)
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Excerpts from session reports related to this document
GRPE \| Session 87 \| 10-13 Jan 2023			58. The representative from OICA introduced ECE/TRANS/WP.29/GRPE/2023/7, as amended by GRPE-87-16-Rev.1. He added that an alignment of this proposal with UN Regulation No. 24 was expected in forthcoming sessions of GRPE. 58. The representative from OICA introduced ECE/TRANS/WP.29/GRPE/2023/7, as amended by GRPE-87-16-Rev.1. He added that an alignment of this proposal with UN Regulation No. 24 was expected in forthcoming sessions of GRPE. 60. GRPE adopted ECE/TRANS/WP.29/GRPE/2023/7 as amended by GRPE-87-16-Rev.1 as reflected in Annex XI to the session report and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2023 sessions as draft new supplement to UN Regulation No. 85 (Measurement of the net power and the 30 min. power). 60. GRPE adopted ECE/TRANS/WP.29/GRPE/2023/7 as amended by GRPE-87-16-Rev.1 as reflected in Annex XI to the session report and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2023 sessions as draft new supplement to UN Regulation No. 85 (Measurement of the net power and the 30 min. power).