WLTP Annex 8:

1. WLTP Annex 8: OVC-HEV: : „Measurement“ versus „Calculation”Idea: calculation for OVC-HEV according to PEV 15.09.2015

2. OVC-HEV: : „Measurement“ versus „Calculation”Idea: calculation for OVC-HEV according to PEV calculation scheme (§4.4.2.1.2. and §4.4.2.2.2. of Annex 8)

3. OVC-HEV: : „Measurement“ versus „Calculation”Idea: calculation for OVC-HEV according to PEV calculation scheme (§4.4.2.1.2. and §4.4.2.2.2. of Annex 8) averaged weighted In the Subgroup EV meeting in Brussels (June 2015), there were simulation results presented which showed that the approach and the idea are working in the case that the considered vehicle has the first engine start by driving the charge-depleting Type 1 test at the SoC minimum of the REESS measured Weighted

4. OVC-HEV: : „Measurement“ versus „Calculation”Concerns: calculation for OVC-HEV according to PEV calculation scheme (§4.4.2.1.2. and §4.4.2.2.2. of Annex 8) • Requirement on the calculation scheme for OVC-HEV: • The calculation scheme has to work in each and every occurring case • Comparison of the city cycle test and of the whole cycle test • 1. Determination of via city cycle test: • engine start which determines is SoC-triggered • 2. Determination of via whole cycle test: • The load collective of the whole cycle test is different to the city cycle test • There may be engine starts in the test which would not occur in the city cycle test • Concern • It’s impossible for the technical authority (without knowing the vehicle strategy) to identify which engine start in the whole cycle test corresponds to the SoC-triggered engine start of the city cycle test (but the quality of the engine start is essential for the UBE determination which is required for the calculation via the whole cycle test) • Consequence • It’s hard to determine the correct UBE for the calculation from the whole cycle test

5. OVC-HEV: : „Measurement“ versus „Calculation”Discussedsolution in the Subgroup EV meeting in Brussels: calculation for OVC-HEV according to PEV calculation scheme (§4.4.2.1.2./§4.4.2.2.2. of Annex 8) via worst case approach • For the determination, the manufacturer shall be allowed to • either determine this value by driving the city cycle test • or to calculate the value by using the worst case UBE value - determined by the first engine start in the whole cycle test (the determined UBE value will always be worst case and never be a best case value)

6. OVC-HEV: : „Measurement“ versus „Calculation”Analysis of the criterion for the UBE determination – worst case P Available power as a function of the SoC. Required power available power comes below requ. power SoC City cycle test M M M M M M M M M M M M M M L L L L L L L L L L L L L L Purely electrically driven Purely electrically driven P Engine start Engine start Available power as a function of the SoC. Required power available power comes below requ. power SoC Whole cycle test L M H exH L M H exH L M H exH L M H exH

7. OVC-HEV: : „Measurement“ versus „Calculation”Analysis of the criterion for the UBE determination – worst case The usable battery energy determined from the whole cycle test is a worst case compared to the case that a city cycle test was driven. Whole cycle test L M H exH L M H exH L M H exH L M H exH P available power comes below requ. power Available power as a function of the SoC. Required power Purely electrically driven Engine start available power comes below requ. power SoC City cycle test M M M M M M M M M M M M M M L L L L L L L L L L L L L L

8. OVC-HEV: : „Measurement“ versus „Calculation”Analysis of the criterion for the UBE determination – worst case P Available power as a function of the SoC. Required power available power comes below requ. power SoC City cycle test M M M M M M M M M M L L L L L L L L L L Purely electrically driven Purely electrically driven P Engine start Engine start Available power as a function of the SoC. Required power available power comes below requ. power SoC Whole cycle test L M H exH L M H exH L M H exH L M H exH

9. OVC-HEV: : „Measurement“ versus „Calculation”Analysis of the criterion for the UBE determination – worst case Whole cycle test L M H exH L M H exH L M H exH L M H exH The usable battery energy determined from the whole cycle test is a worst case compared to the case that a city cycle test was driven. P below requ. power available power comes Available power as a function of the SoC. Required power Purely electrically driven Engine start available power comes below requ. power SoC City cycle test M M M M M M M M M M L L L L L L L L L L