Division Formula 4

United Kingdom

C_{{CO}_{2}} = \frac{\sum_{m}^{i = 1} {ΔP}_{i} \times {UF}_{i}}{v \times η_{DCDC}} \times K_{{CO}_{2}}

Where:

η_DCDC

Efficiency of the DC-DC converter

K_{{CO}_{2}}

CO₂ correction factor $[(\frac{{gCO}_{2}}{km}) ∕ (\frac{Wh}{km})]$ , as defined in paragraph 2.2 of Appendix 2 to Sub-Annex 8 to Annex XXI to Regulation (EU) 2017/1151.

The efficiency of the DC-DC converter (η_DCDC ) shall be evaluated in accordance with the appropriate vehicle architecture, as specified in Table 7:

Table 7

F1Efficiency of the DC-DC converter for different vehicle light architectures

#	Architecture	η_DCDC
1	Lights connected in parallel to the low voltage battery (lights fed directly from the high voltage battery via DCDC converter)	0,xx
2	Lights connected in series after the low voltage battery, and the low voltage battery connected in series to the High voltage battery	1
3	High Voltage and low voltage batteries have exactly the same voltage (12 V, 48 V,…) as the lights	1

For architecture #1, the efficiency of the DC-DC converter (η_DCDC ) shall be the highest value resulting from the efficiency tests performed in the operative electric current range. The measuring interval shall be equal or lower than 10 % of the operative electric current range.

Annotations

Textual amendments

F1: Substituted by Commission Implementing Decision (EU) 2020/1714 of 16 November 2020 amending Implementing Decision (EU) 2019/1119 as regards the testing methodology for certain not-off vehicle charging hybrid electric passenger cars and to take into account the use of alternative fuels and Implementing Decision (EU) 2020/1339 as regards rear position lamps (Text with EEA relevance).