1. Table of running resistances – PSA proposal
WLTP-DTP-LabProcICE-121
Table of running resistances – PSA proposal
Bertrand MERCIER
12/03/2012

2. Using the table of running resistances

3. Proposed approach
The coefficient b is comming from aerodynamics at 95 % (1/2 ρ SCx v²)
Change b to aerodynamics
1,3 factor for N1 vehicles
Regression

4. Evaluation of the position of N1 vehicles
Evaluation of aerodynamics on several vehicles
3 types of N1 vehicules
F1 (Berlingo/Partner)
K1 (Jumpy/Expert)
K2/K3 (Jumper/Boxer)
For each type , 3 shapes : mini ; medium; maxi
For each type and shape :
The test mass , average of market distribution
The Aerodynamics, average of market distribution

5. Evaluation of the position of N1 vehicles
Positionning of the 9 « vehicles »

6. Proposition for a new coefficient b
Creation of a new table of running resistances using the new coefficient b

7. Conclusion Proposal Issues Using of this new table
Same table for M1 and N1
withdraw the 1,3 factor
No change for the coefficient a
Issues
Opposite concavity
Need some more datas for heavyer vehicles