We had a presentation from ACEA EV group about UF. ACEA EV group analyzed two databases, WLTP for EU and Fiat Ecodrive database. EU has decided to use a UF curve based on WLTP EU and FIAT databases as the EU UF. Since there are not large number of OVC-HEV on the market the determination of UF is a prediction, and only possible to use individual option. The UF needs to be reviewed later when the number of vehicles are larger.

Proposal for UF determination in phase 1b GTR is based on SAE J2841. Based on regional driving data, with method to derive the curve described in the GTR according to SAE J2841.

The final proposal for determination of UF according to the ACEA EV group proposal will be presented to WLTP IWG on the 9th meeting.

What is valid input data for revision of regional UF determination? Needs to be specified in the regional implementation of WLTP GTR.

EV subgroup has made a decision to refer SAE J2841 to develop regional UF in each region while accepting the currently available UF in US and JPN.