1. WLTP-DTP-LabProcICE-183rev1
Vehicle selection, tyre selection, testmass definition Overview of discussed options within WLTP Project f
Audi AG

2. Test mass proposal with energetic options
CO2 max
TML
CO2 min
lowest test mass, best tyre class, best aerodynamic
bandwith of
energetic options individual vehicle
Test mass individual vehicle
CO2
Individual vehicle
Influence WLTP on CO2, EA-52,

3. Option 1:. Consideration of Tyre/Rims and. Aerodyn
Option 1: Consideration of Tyre/Rims and Aerodyn. Options for CO2/Energy
Influence WLTP on CO2, EA-52,

4. Option 2:. Test Mass Concept with Consideration of Tyres. and Aerod
Option 2: Test Mass Concept with Consideration of Tyres and Aerod. Options
Influence WLTP on CO2, EA-52,

5. 1. Option Aerodynamic worst case scenario
The vehicle shall be tested at least once at TestMassHigh (TMH) with worst case aerodynamic features, if any (1 coastdown, 1 CO2-test)
If the manufactures wants to correct the CO2 values on a mass basis, the vehicle shall be tested at least 2 times (2 coastdowns, 2 CO2-tests)
TML and TMH with worst case aerodynamic features (if any)
CO2 values are interpolated on a mass base only
extrapolation within [± 100] kg is allowed
Aerodyn. worst case
test mass
CO2
TML
TMH
Measure only once at TMH if there are no weight differences within a vehicle family [50 kg or 100 kg?]
Test Mass
Vehicle
TM CO2
Aerodyn. worst case
Influence WLTP on CO2, EA-52,

6. 2. Option Reflect all aerodynamic features
The vehicle shall be tested 3 times (3 coastdowns, 3 CO2-tests) to define the bandwidth for CO2 values:
TML and TMH with best aerodynamic features, tyre out of lowest RR class
TMH with worst aerodynamic features, tyre out of highest RR class
CO2 values for features of individual vehicles to be calculated and added to TM CO2 value
extrapolation within [± 100] kg is allowed
test mass
CO2
TML
TMH
Aerodyn. worst case
Aero CO2
individual values
for each feature
DCO2
Bandwidth of individual vehicle TM
TM CO2
Veh.-CO2
best aerodynamic
features installed
best aerodynamic
features installed
Influence WLTP on CO2, EA-52,

7. Calculation of AeroCO2 Corrective AeroCO2 values shall be based on
calculations of cdi· Ai
The extrapolation for positively influencing features shall not be higher than 50% of the negative ΔCO2.
With „i“ for features that influence aerodynamic drag
and „n“ for the number of aerodynamic features
Influence WLTP on CO2, EA-52,