1 WLTP Open Issue Phase 1B Starting notes OIL # WLTP-08-30e

2 OIL # 24 & OIL # 25 Section: Chassis Dynamometer Calibration Topic: Force Transducer & Parasitic Loss Calibration - f2f-meeting of experts (AUDI, VW, Daimler, Porsche) - phone/ discussion with other experts - finalization in Dec 2014 Page 2 Starting notes

3 OIL # 26 Section: Measurement Equipment 97 comments from Iddo Riemersma in GTR version f2f-meeting of experts (AUDI, VW, Daimler, Porsche) - phone/ discussion with other experts - TF leader keeps filtering current GTR version for modifications & remaining comments - continuation of discussion and finalization in Dec 2014 / Jan 2015 Page 3 Starting notes

4 Annex 5: Force measurement system The accuracy and linearity of the force transducer shall be at least ± 10 N for all measured increments. This shall be verified upon initial installation, after major maintenance and within 370 days before testing. Comment from LabProcICE in OIL: agree for alignment in phase-1b Page 4 Backup: OIL # 24: current GTR text

5 Annex 5: Dynamometer parasitic loss calibration The dynamometer's parasitic losses shall be measured and updated if any measured value differs from the current loss curve by more than 2.5 N. This shall be verified upon initial installation, after major maintenance and within 35 days before testing. Comment from LabProcICE in OIL: limit of 9 N (current legislations) or 2.5 N; to be discussed Page 5 Backup: OIL # 25: current GTR text

6 Annex 5: ff. measurement equipment … ∑ 30 pages with 98 comments Comment from LabProcICE in OIL: IR comments IR 177 ff. to be reviewed Page 6 Backup: OIL # 26: current GTR text