GAR | WLTP-08-10

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Document Title	Modifications to the WLTP calculation parameter coefficients (Open issue item 5)
Reference Number	WLTP-08-10
Date	7 Nov 2014
Summary	Proposal for modifications to the calculation parameter/coefficients r₀, a₁ and b₁ prepared by the WLTP downscaling issues task force.
Rulemaking Area(s)	GTR No. 15 WLTP
Meeting(s)	WLTP \| Session 8 \| 18-20 Nov 2014 5. Main part & Cycle issues (Annex 1 & 2)
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Excerpts from session reports related to this document
WLTP \| Session 8 \| 18-20 Nov 2014		#5: Modifications of the calculation parameter/coefficients r0, a1 and b1 (WLTP-08-10e) India requested modifications and made a respective proposal. Modified calculation parameter/coefficients were developed. Effects for M1 and N1 vehicles were shown. O. Eberhardt expressed his concerns; if the approach would probably apply to N1 vehicles on the European market in future (note: this is not the case today). Proposed parameters were supported by India, JPN, EC as a compromise solution and adopted by WLTP IWG.