ECE/TRANS/180/Add.15
Annex 8
Annex 8 - Appendix 6
Shorten test procedure for PEV
1.
General
This appendix describes the Shorten Test Procedure (STP) which determines
All-electric range (AER).
This is accomplished by measuring: (1) the DC energy consumption for each cycle
phase, and (2) the battery's useable DC energy content (UBE).
2.
Test procedure
The STP consists of 2 sequences of WLTC phases (S1,S2) and constant-speed
driving cycles (CSCM,CSCE).
M11
L11
H11 Ex11 L12 M12 CSCM
L21
M21
H21
dM
S1
Ex21 L22
M22
S2
CSCE
dE
S1,S2: Low + Middle + High + Extra High + Low + Middle of WLTC
At the option of the Contracting Party, the Extra High phase may be excluded
CSCM,CSCE: Constant speed cycle
Constant speed = [100] km/h with Extra High phase
= [80] km/h without Extra High phase
Distance of CSCM,CSCE ( dM, dE ) :
dM = AER – dS1 – dS2 – dE
dE = 5km
Manufacture shall declare the dM prior to the test. Actual distance of dE driven
during test must be
3km < dE < 15km
3.Calculations
3.1Phase Scaling Factors
The phase scaling factors determine the contribution of each phase’s energy consumption
value to the total energy consumption for a given drive cycle type.
Phase Scaling Factor : K[phase]_i
The subscript “i” is the phase run order within a given phase type.
ex.: KLow11, KHigh22
KLow i, KMiddle i are calculated according to the equations in 3.2 of this annex.
KHigh i = KEx. high i = 0.5
3.2
Consecutive Cycle Procedure equivalent Low & Middle Phase Factors
K Low11  K Middle11 
Edc Low11  Edc Middle11
UBE
K Low12  K Low21  K Low22 
1 - K Low11
3
K Middle12  K Middle21  K Middle22 
1 - K Middle11
3
Where Edc[phase]_i is phase discharge energy measured in DC W-h.
UBE is the useable battery energy defined as total DC discharge energy
UBE  Edc Total 
alltestphases / cycles
 Edc
[phase/cycle]_i
1
 Edc Low + Edc Middle + Edc High + Edc Extra - high + Edc CSCM + ECdcCSCE
3.3
All-electric range, AER
ECdc[Phase]_i 
Edc[phase]_i
D[phase]_i
Where ECdc[Phase]_i is DC energy consumption for the phase and D[Phase]_i is the driven
distance for the phase.
The total DC energy consumption for each drive cycle is calculated by summing the
product of the phase scaling factor and the respective DC discharge energy consumption for
all phases of a given cycle type.
ECdc[phase]  [K[phase]_i  ECdc[phase]_i]
The Low discharge energy consumption, using the CCP-equivalent scaling factors is then
ECdc Low  (K Low11  ECdc Low11)  (K Low12  ECdc Low12)
 (K Low21  ECdc Low21)  (K Low22  ECdc Low22)
The Middle discharge energy consumption, using the CCP-equivalent scaling factors is
then
ECdc Middle  (K Middle11  ECdc Middle11)  (K Middle12  ECdc Middle12)
 (K Middle21  ECdc Middle21)  (K Middle22  ECdc Middle22)
The High phase discharge energy consumption, using the generic scaling factors is then
ECdc High  (K High11  ECdc High11)  (K High21  ECdc High21)
The Extra-high phase discharge energy consumption, using the generic scaling factors is
then
ECdc Extra - high  (K Extra - high11  ECdc Extra - high11)  (K Extra - high21  ECdc Extra - high21)
The full WLTC discharge energy consumption, using the generic scaling factors is then
ECdc WLTC 
AER [phase] 
Edc WLTC
DWLTC

 Edc
D

UBE
ECdc Low
The Middle range is then
AER Middle 
UBE
ECdc Middle
The High range is then
AER High 
[Phase]
UBE
UBE

 Ki  ECdc[phase]_i ECdc[phase]
The Low range is then
AER Low
[Phase]
UBE
ECdc Highe
The Extra-high range is then
AER Extra - high 
UBE
ECdc Extra - highe
All Electric range is then
AER 
UBE
ECdc WLTC