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UN R85: Proposal for a Supplement to address pressure measurement tolerances

Document GRPE-87-32/Rev.1

11 January 2023

87th GRPE session (10-13 Jan 2023)

Proposal to allow higher tolerance for pressure measurement under paragraphs 4.7 and 4.8 (+ aligned intake and exhaust) in order to avoid refusal of test due to the non-compliance of pressure accuracy and based on the low impact on the αd. Value or approach (linearity?) to be discussed.

Submitted by France

Status: Informal GR review

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Previous Documents, Discussions, and Outcomes

87th GRPE session (10-13 Jan 2023)

5. | UN Regulations Nos. 24, 85, 115, 133 and 143

59. The representative from France introduced GRPE-87-32-Rev.1. The representative from the EC requested additional time to scrutinize the proposal.

Relates to UN R85 |

Reference Number:	SCUNV-10
Meeting Session(s):	11th SCUNV session (26 Apr)
Document date:	26 Apr 24
Regarding:	Safe and Clean Vehicles

Reference Number:	SCUNV-09
Meeting Session(s):	11th SCUNV session (26 Apr)
Document date:	26 Apr 24
Regarding:	Safe and Clean Vehicles

Reference Number:	SCUNV-11-01/Rev.1
Meeting Session(s):	11th SCUNV session (26 Apr)
Document date:	26 Apr 24
Regarding:	Safe and Clean Vehicles

Reference Number:	TF-AVRS-14-01
Meeting Session(s):	14th TF-AVRS session (27 May)
Document date:	26 Apr 24
Regarding:	Regulation Screening for ADS

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