RDE Moving Averaging Window #02

4.   EVALUATION OF WINDOWS

Mco2,d,p1 : Vehicle CO2 emissions over the Low Speed phase of the WLTP cycle x 1,2 [g/km]
Mco2,d,p2:  Vehicle CO2 emissions over the High Speed phase of the WLTP cycle x 1.1 [g/km]
Mco2,d,p3:  Vehicle CO2 emissions over the Extra High Speed phase of the WLTP cycle x 1,05 [g/km]

Vp1 = Average speed of Low Speed phase of the WLTP (16.0 km/h)
Vp2 = Average speed of High Speed phase of the WLTP (56.6 km/h)
Vp3 = Average speed of Extra High Speed phase of the WLTP (92.3 km/h)

P1 to P2

Mco2,d,cc = a1V + b1

a1 = (Mco2,d,p2 - Mco2,d,p1) / (Vp2 - Vp1)
b1 = Mco2,d,p1 - a1 x  Vp1

P2 to P3

Mco2,d,cc = a2V + b2

a1 = (Mco2,d,p3 - Mco2,d,p2) / (Vp3 - Vp2)
b1 = Mco2,d,p2 - a1 x  Vp2

RDE Moving Averaging Window #01

3.   MOVING AVERAGING WINDOWS

3.1.   Definition of averaging windows

Eliminate follows

The periodic verification of the instruments and/or after the zero drift verification
The cold start emissions, defined according to Appendix 4, point 4.4
Vehicle ground speed < 1 km/h
Any section of the test during which the combustion engine is switched off

(t2,j - t1,j) : jth averaging window

Mco2(t2,j) - Mco2(t1,j) > Mco2, ref

Mco2(ti,j) : CO2 mass between the test start and time (t2,j) (g)

Mco2, ref : 1/2 x WLTP test result

Mco2(t2,j - Δt) - Mco2(t1,j) < Mco2, ref =< Mco2(t2,j) - Mco2(t1,j)

Δt : Data sampling time

3.2.   Calculation of window emissions and averages

Mgas,j  :  Mass or PN emissions (g/s)

Mgas,d,j : all pollutants (g/km)
Mco2,d,j ; CO2 (g/km)

Vj : average speed (km)

2017/1151 as last amended by 2017/1347 Annex III RDE

2017/1151 as last amended by 2017/1347 Annex III Real Driving Emission(RDE)

Appendix 1 Test procedure for vehicle emissions testing with a Portable Emissions Measurement System (PEMS)

Appendix 2 Specifications and calibration of PEMS components and signals

Appendix 3 Validation of PEMS and non-traceable exhaust mass flow rate

Appendix 4 Determination of emissions

Appendix 5 Verification of trip dynamic conditions and calculation of the final RDE emissions result with method 1 (Moving Averaging Window)

Appendix 6 Verification of trip dynamic conditions and calculation of the final RDE emissions result with method 2 (Power Binning)

Appendix 7 Selection of vehicles for PEMS testing at initial type approval

Appendix 8 Data exchange and reporting requirements

Appendix 9 Manufacturer's certificate of compliance

WLTP emission regulations

WLTP Emission regulation

2007/46/EC as last amended by (EU)2017/1151
Down load PDF
http://publications.europa.eu/resource/cellar/7d1c640d-62d8-11e7-b2f2-01aa75ed71a1.0006.01/DOC_1

Real Drive Emissions (RDE)
2007/46/EC as last amended by (EU)2017/1154
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32017R1154&qid=1500795730223&from=EN 

2007/46/EC as last amended by (EU)2017/1347
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32017R1347&from=EN