Highlights related to ECE/TRANS/WP.29/GRPE/2017/3 on WLTP EVAP
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Pursuant to the development of a GTR on evaporative emissions under the WLTP informal group, ETRMA presents its views on the draft procedure in order to clarify the role of tyres.

Reference Number: GRPE-74-10
Origin: ETRMA
Date: 11 January 2017
Related Documents:
GRPE/2017/3 | Proposal for a new GTR on evaporative emissions test procedures under the Worldwide harmonized Light vehicles Test Procedure (WLTP EVAP)
Discussion(s):
Working Party on Pollution and Energy | Session 74 | 10-13 Jan 2017

18. The expert from ETRMA presented GRPE-74-10 to highlight that emissions from tyres should be excluded from the test procedure in the draft new GTR on WLTP EVAP. He explained that tyres should be removed at the stage of vehicle preparation, since they are not part of the fuel storing system and they may add some uncertainty to the test.