1. RLD test program : alternative method O.I.L#18
WLTP-06-30e
RLD test program : alternative method O.I.L#18
26th -28th of March 2014
WLTP IWG #6

2. Objectives
RLD determination with “Wind-tunnel + chassis dyno “ vs “coast-down”, to enable the introduction of the WT+CD method in GTR 15, Annex 4, § 6. [RESERVED: Road load measurement using a combination of a wind tunnel and chassis dynamometer]
Comparison of equivalency of both methods
Comparison of reproducibility/repeatability for both methods
Comparison of the running resistance measured on chassis dyno with the ISO method (stabilized speeds) and by deceleration (shorten method)
Aim = optimization of the current ISO method
WLTP IWG #6

3. Outlines of the program (1/2)
5 vehicles provided by PSA and Renault
M1 & N1
2x4 & 4x4
Automatic & manual Transmission
3 Tracks : Idiada (ES) ; Belchamp (FR) ; Aubevoye (FR)
2 Chassis dynamometers : Belchamp (FR) ; Aubevoye (FR)
1 Wind tunnel : St Cyr (FR – S2A)
1 golden Engineer = UTAC
WLTP IWG #6

4. Outlines of the program (2/2)
Tests period targeted : June  September 2014
1) Tracks and chassis dyno
2) Wind Tunnel
In parallel, adjustment of the used reference method and wind tunnel criteria in the framework of the ad hoc TFs lead by BMW (Christoph Lueginger) and TNO (Rob Cuelenaere) : O.I.L #10 and 18
Preliminary exchanges with ACEA, VW, BMW in March
Outlines of the program (2/2)
WLTP IWG #6

5. Thank you for your attention !