# Commission Implementing Decision of 10 September 2013 on the approval of the Daimler engine compartment encapsulation system as an innovative technology for reducing CO2 emissions from new passenger cars pursuant to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance) (2013/451/EU), Division 5: FORMULAE FOR CALCULATING THE CO2 SAVINGS

Extent: E+W+S+N.I.

The relative CO2 reduction potential ΔCO2(t) for different parking times shall be calculated using formula 5 with the following input data:
decay constant of the eco-innovation vehicle without an engine compartment encapsulation (baseline vehicle): dB [1/h]. This value shall be calculated with formula 1;
decay constant of eco-innovation vehicle with an engine compartment encapsulation: dE [1/h]. This value shall be calculated with formula 1;
Hot Start Benefit: HSB. This value shall be calculated with formula 2;
parking time distribution (share of vehicle stops): SVS. Table 2 (below) shall be used;
CO2 type-approval value: TACO2 [g CO2/km], i.e. CO2 mass emissions combined.
Formula 5: ΔCO 2 = 1,443 × ln e − d E × t + 1 e − d B × t + 1 × HSB
The calculation results shall be given in the following Table 1:
Table 1
Relative CO2 reduction potential ΔCO2(t) for different parking times
Parking time [h]
0,5
1,5
2,5
3,5
4,5
5,5
6,5
7,5
8,5
9,5
10,5
11,5
ΔCO2(t) [%]
Parking time [h]
12,5
13,5
14,5
15,5
16,5
17,5
18,5
19,5
20,5
21,5
22,5
23,5
ΔCO2(t) [%]
The total CO2 savings, weighted by the parking times (pt) shall be calculated using formula 6.
Formula 6: C CO 2 = TA CO 2 × ∑ pt = 1 24 ΔCO 2 t pt × SVS pt
Where the values for parking time [h] and SVS [%] shall be those in Table 2:
Table 2
Parking time distribution (share of vehicle stops)
Parking time [h]
0,5
1,5
2,5
3,5
4,5
5,5
6,5
7,5
8,5
9,5
10,5
11,5
SVS [%]
36
13
6
4
2
2
1
1
3
4
3
1
Parking time [h]
12,5
13,5
14,5
15,5
16,5
17,5
18,5
19,5
20,5
21,5
22,5
23,5
SVS [%]
1
3
3
2
1
1
1
1
1
1
1
1
The CO2 savings shall be the type-approval value (CO2 mass emissions combined) multiplied by a factor of x. The value of x is equal to the term ∑ ΔCO 2 t pt × SVS pt of formula 6.
Where an existing vehicle type is equipped with the innovative technology the following formula shall be used:
Formula 7: C CO 2 = x * TA CO 2 baseline vehicle
with:
CCO2 CO2 savings [g CO2/km]
TACO2 baseline vehicle type-approval value of the eco-innovation vehicle without an engine compartment encapsulation [g CO2/km]
Where the innovative technology is installed on a new vehicle type and the type-approval CO2 value has been determined with the innovative technology installed, the following formula for calculating the CO2 savings shall be used:
Formula 8: C CO 2 = x ∕ 1 − x *TA CO 2 new vehicle type
with:
CCO2 CO2 savings [g CO2/km]
TACO2 new vehicle type type-approval value of the new vehicle type equipped with the innovative technology [g CO2/km]

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Source: https://www.legislation.gov.uk/eudn/2013/451/annex/division/5 (the official version)
Page: https://openlegislation.uk/eu-decision-2013-451/annex/division-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.