GAR | GRSG/2018/13

Document Title	UN R110: Proposal for a Supplement to the 02 and 03 series of amendments
Reference Number	GRSG/2018/13
Date	24 Jul 2018
Summary	Proposal to amend and clarify the need for a gas flow adjuster under UN R110 with regard to the use of carburetors and fuel injectors. A gas flow adjuster is not necessary when an electronic fuel injection system manages the air/fuel mixture and therefore should be removed from paragraph 18.3.1. An adjuster is needed when air/fuel mixture runs via a carburetor and therefore should be added to paragraph 18.3.2.
Source(s)	OICA
Rulemaking Area(s)	UN R110 CNG/LNG System Components
Proposal Status	Superseded
Meeting(s)	GRSG \| Session 115 \| 9-12 Oct 2018 9. (b) UN Regulation No. 110 (CNG and LNG vehicles) 9. (b) UN Regulation No. 110 (CNG and LNG vehicles)
Related Documents
	GRSG-114-27	UN R110: Proposal for amendments concerning gas flow adjuster \| Superseded	change status?
	WP.29/2019/13	UN R110: Proposal for Supplement 2 to the 03 series of amendments \| Adopted	supersede?
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Excerpts from session reports related to this document
GRSG \| Session 115 \| 9-12 Oct 2018		38. The expert from OICA presented ECE/TRANS/WP.29/GRSG/2018/13 to adapt the text of the Regulation to the current technology on the gas flow adjustor in the carburettor or injector. GRSG noted a number of comments and proposals for amendments. 39. The expert from OICA introduced GRSG-115-18-Rev.2 amending the Regulation with respect to the inspection requirements for the periodic requalification of CNG cylinders to avoid structural failures during their service life. Finally, GRSG adopted ECE/TRANS/WP.29/GRSG/2018/16, ECE/TRANS/WP.29/GRSG/2018/13 and GRSG-115-18-Rev.2 as reproduced in Annex III to this report. The secretariat was requested to submit the proposals to WP.29 and AC.1 as draft Supplement 2 to the 03 series of amendments to UN Regulation No. 110 for consideration at their March 2019 sessions.