GAR | GRPE-87-53

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Document Title	UN R49: Proposal for a Supplement to the 07 series of amendments
Reference Number	GRPE-87-53
Date	13 Jan 2023
Summary	Proposal based on ECE/TRANS/WP.29/GRPE/2021/14, as amended by Annex X of the report of the 83rd GRPE (Supplement 7 to the 06 series of amendments). Some modifications were not taken onboard in the 07 series of amendments (and Supplements 1, 2 and 3). For the remaining amendments included in this proposal, the justifications are: UN R49 does not define linearity requirements for humidity sensors. As the humidity content of the intake air is an essential measure for the calculation of the specific exhaust emission, it is important to add requirement for humidity sensor. Reference: ISO 16183 the accuracy of the absolute humidity shall be +- 5%. Typo error: the instrument should be now in NOx mode. To clarify the operation procedure, make the text easier to be understood. This document is also available with tracked changes in pdf version and in .doc format.
Source(s)	France
Rulemaking Area(s)	UN R49 Diesel/CNG/LNG Engine Emissions
Proposal Status	Superseded
Meeting(s)	GRPE \| Session 87 \| 10-13 Jan 2023 4. (a) UN Regulations Nos. 49 and 132 4. (a) UN Regulations Nos. 49 and 132
Related Documents
	GRPE/2021/14		UN R49: Proposal for Supplement to 06 series of amendments (superseded)
	WP.29/2023/60		UN R49: Proposal for Supplement 2 to the 07 series of amendments
Downloads
UNECE server	.pdf format		.doc format