1. Status report on the DTI TF Takahiro HANIU (JASIC/JARI)
18-21, Sep th WLTP-IWG
Status report on the DTI TF
<DRAFT>
DTI TF leader
Takahiro HANIU (JASIC/JARI)

2. Current status on the DTI TF
The DTIs for the EVs were discussed and most of items were agreed within the DTI TF and SG-EV.
PEV shortened test:
Agreed that the constant speed segments are excluded from the DTI calculation. The evaluation of the DTI in the PEV shortened test procedure should be done only on:
- dynamic segment 1 “L-M-H(-xH)-L-M” and in addition on
- dynamic segment 2 “L-M-H(-xH)-L-M”
PEV consecutive cycle test and OCV-HEV CD tests:
EC and JRC's proposal was agreed.
- When number of CD cycles is <4, calculate DTIs cycle by cycle and all need to comply with set criteria
- When number of CD cycle is ≥4, the average of RMSSE and IWR for each 2 CD cycles need to be within the set limits and for IWR there should be no single CD cycle with value below -3% and above +5%
Usage of OBD port during type approval test:
Agreed that "to use OBD port during the type approval test for the detection of WOT" is allowed.
The proposed text amendment
The revised text is now provided for the Amendment 5.
The DTI for city cycle test is currently discussing in the DTI TF and SG-EV.

3. (Ref) PEV shortened test
Calculation portion for shortened test
Shortened test procedure
For the shortened test, the drive trace index should be calculated during the two dynamic segments(DS1 and DS2) respectively.
It is not necessary to calculate DTIs during the constant speed segments (CSSM and CSSE) 2
Drive trace index for DS1
Segment #
IWR
RMSSE
DS 1
x.xxx
DS 2

4. Calculate DTIs respectively
(Ref) OVC-HEV CD test
Calculation portion
When number of CD cycles is <4, calculate DTIs cycle by cycle and all need to comply with set criteria
When number of CD cycle is ≥4, the average of RMSSE and IWR for each 2 CD cycles need to be within the set limits and for IWR there should be no single CD cycle with value below -3% and above +5%
Calculate DTIs respectively
Calculate each cycle
Calculate each cycle
less than 4 cycle
more than or equal to 4 cycle
Cycle# 1 2 3
IWR
x.xxx
RMSSE
Cycle# 1 2 3 4
IWR
x.xxx*
RMSSE
x.xxx
* should be <IWR<+5
Cycle#
1-2
1-3
1-4
2-3
2-4
3-4
IWR
x.xxx
RMSSE

5. (Ref) DTIs for PEV city test cycle
When the shortened test procedure is applied
Seg.#
DS-1
DS-2
IWR
x.xxx
RMSSE
only DTI application on dynamic segment necessary
City-1
City-2
City-3
City-4
Cycle#
City-1
City-2
City-3
City-4
IWR
x.xxx*
RMSSE
x.xxx
* should be <IWR<+5
No separate evaluation as segment 1 and 2 already evaluated
Cycle#
1-2
1-3
1-4
2-3
2-4
3-4
IWR
x.xxx
RMSSE
When the consecutive cycle test procedure by applicable WLTP test cycle is applied
Cycle#
WLTC-1
WLTC-2
WLTC-3
IWR
x.xxx
RMSSE
City-1
City-2
City-3
only DTI application on complete cycle necessary
Cycle#
City-1
City-2
City-3
IWR
x.xxx
RMSSE
No separate evaluation as each complete cycle already evaluated
WLTC-1
WLTC-2
WLTC-3
When the consecutive cycle test procedure by city test cyle is applied
City-1
City-2
City-3
Cycle#
City-1
City-2
City-3
IWR
x.xxx
RMSSE OK

6. (Ref) DTIs for OVC-HEV city test cycle-1
<based on >
When the city test cycle is applied and the # of cycles of CD test is less than 4.
City-1
City-2
City-3
Cycle#
City-1
City-2
City-3
IWR
x.xxx
RMSSE OK
When the city test cycle is applied and the # of cycles of CD test is more than or equal to 4.
Cycle#
City-1
City-2
City-3
・・・
City-n
IWR
x.xxx*
RMSSE
x.xxx
City-1
City-2
City-n
* should be <IWR<+5
・・・
Cycle#
1-2
1-3
1-4
2-3
2-4
3-4
・・・
IWR
x.xxx
RMSSE

7. (Ref) DTIs for OVC-HEV city test cycle-2
When the applicable WLTP test cycle is applied and the # of cycles of CD test is less than 4.
Cycle#
WLTC-1
WLTC-2
WLTC-3
IWR
x.xxx
RMSSE
City-1
City-2
City-3
Cycle#
City-1
City-2
City-3
IWR
x.xxx
RMSSE
No separate evaluation as each cycle already evaluated
WLTC-1
WLTC-2
WLTC-3
If applicable WLTP test cycle is applied and the # of cycles of CD test is more than or equal to 4.
Cycle#
WLTC-1
WLTC-2
WLTC-3
・・・
WLTC-n
IWR
x.xxx*
RMSSE
x.xxx
* should be <IWR<+5
only DTI application on complete cycle necessary
Cycle#
1-2
1-3
1-4
2-3
2-4
3-4
・・・
IWR
x.xxx
RMSSE
City-1
City-2
City-n
・・・
Cycle#
City-1
City-2
City-3
・・・
City-n
IWR
x.xxx*
RMSSE
x.xxx
WLTC-1
WLTC-2
WLTC-n
* should be <IWR<+5
No separate evaluation as each cycle already evaluated
Cycle#
1-2
1-3
1-4
2-3
2-4
3-4
・・・
IWR
x.xxx
RMSSE

8. The questions on the DTI to the EVs were raised
(Ref) Schedule
The DTIs for the EVs were discussed in the DTI TF and SG-EV
2018
2019
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
・・・
WLTP IWG
SG-EV
DTI TF
TODAY 9
WLTP #21
17-20
WLTP #22
4-5
WLTP #23
18-21
WLTP #24
WLTP #25 10
F2F 13
Web 9
Web 6
Web 31
Web 6
Web
The questions on the DTI to the EVs were raised 24
Web 4
Web