WLTP-DTP-13 Tokyo, 21./22.03.2013 DTP Subgroup LabProcICE slide 1 Progress Report DTP Subgroup Lab Process Internal Combustion Engines (LabProcICE)WLTP-DTP-13

WLTP-DTP-13Tokyo, 21./22.03.2013

DTP Subgroup LabProcICE

slide 1

Progress ReportProgress ReportDTP SubgroupDTP Subgroup

Lab Process Internal Combustion Engines Lab Process Internal Combustion Engines

(LabProcICE)(LabProcICE)

WLTP-DTP-13WLTP-DTP-13

Tokyo, 21./22.03.2013Tokyo, 21./22.03.2013

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 2

1) State of the working progress

2) Open issues table

(a) Open issues (red)

(b) Scrutiny reservations (yellow)

3) Post-validation issues

4) Next steps

Overview

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 3

• 13.02.2013 Phone/web conference

• 20./21.02.2013 Brussels workshop at AECC/ACEA

Open issues Table (OIT): LabProcICE-175

minutes: LabProcICE-200

• 04.03.2013 Phone/web conference

- remaining RLD issues of OIT

• Several dates: Phone/web conferences of Drafting Task

Force & on other specific issues

Meetings since DTP-12

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 4






4) Next steps

Overview

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 5

Open Issues Table (OIT)

Current revision (part of general OIT from VTF) with 41 items:

LabProcICE-175rev2.

•Green: 16 items closed on working level.

•Yellow: 11 items with a scrutiny reservation from one party.

•Red: 13 items

- Contradictory proposals from Contracting Parties

- Open issues on working level

- Issues to be decided until June 2013

Note: Items where LabProcICE is not in charge to prepare/make decisions were

switched to white.

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 6






4) Next steps

Overview

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 7

Soak procedure (item 18 a)

• Solution 1 (EU position):

Target temperature (23 ± 2) °C and forced cooling allowed

stability & practicability criteria

“The vehicle is soaked for a minimum of 6 hours and a maximum of 36 hours with the

bonnet opened or closed. If not excluded by specific provisions for a particular

vehicle technology cooling may be accomplished by forced cooling down to the

setpoint temperature. If cooling is accelerated by fans, the fans shall be placed so that

the maximum cooling of the drive train, engine and the exhaust aftertreatment

system is achieved in a homogenous manner. This conditioning shall be carried out

for at least six hours and continue until the engine oil temperature and coolant, if any,

are within ± 2 K of the setpoint.”

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 8

• Solution 2 (Japanese position)

Soak periode (12 - 36 h), no target temperature (“natural cooling down”)

representativeness criteria + covers benefits of heat storage systems

EU objection: soak at 23°C is not representative

• India: prefers natural cool down, but allows forced cooling

solution 1 accepted?

• LabProcEV: no forced cooling.

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 9

Soak for heat storage technologies (item 18b)

•Aim: harmonized approach instead of regional solution as e. g. eco-innovation concept in EU

•Solution 1: additional test (upon request of the manufacturer)

- natural cooling down at [23 ± 3] °C.

- soak period [12 h to 14 h]

- usage of measured values as an regional option?

Combine with solution 2 of general soak procedure?

•Solution 2: mandate to develop dedicated test procedure

later stage of gtr

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 10

Monitoring RCB of all batteries(item 28 a/b)

Agreed: charging of the battery can be omitted before precon (on the request of

the manufacturer) + no charging after precon

Open issue: Monitoring + Correction of CO2 value

•Solution 1:

- RCB measurement

- correction if RCB is above [0.5 or 1] % of consumed fuel energy

- follow HEV (based on measurement) and/or TU Graz (energy calculation)

EV: threshold dependent on mode construction decision on value later

•Solution 2:

- acc. to validation 2 results: no charging after precon is sufficient

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 11

Handling of GSI (item 26)

Situation:

GSI only mandatory in Europe

•Solution 1:

GSI as an option for the manufacturer in the gtr

harmonized test procedure still needs to be developed

item 20 (gear change tolerances) not closed

•Solution 2:

GSI excluded from gtr

regional procedure as an option for CPs

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 12

Vehicle warming up for RLD and on dyno (items 16 / 17)

Current gtr text:

• warm up on the road:

“Warming up is done by vehicle driving only. Driving shall be cruising and

speed limit is [10 km/h] above the coastdown starting speed. (...)”

• warm up on the dyno:

“Prior to the test, the vehicle shall be warmed up appropriately until normal

vehicle operating temperatures have been reached. This condition is

deemed to be fulfilled when three consecutive coastdowns are completed (...)

During this warming up period, the vehicle speed shall not exceed the highest

reference speed within the given tolerance of Annex/chapter (tbd.)”

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 13

Japanese proposal from validation 3:

On the road:

On the dyno:

Solution:

Issue expected to be solved on expert level

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 14

4WD dyno specifications (item 41)

State of play:

•Provisions included in gtr draft

•Japan proposal:

provisions to be excluded until US EPA / SAE discussions finalized

Solution:

In the meantime agreement on specifications on expert level

Wording provided to Drafting Coordinator

Review after finalization of future 1066 regulation

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 15

Speed trace violation (item 25)

State of play:

•Void criteria not yet discussed

•Solution to be discussed in connection with normalization approach

Issue expected to be solved on expert level

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 16

Open issues – to be solved until June 2013

Table of running resistances (item 11)

State of play:

•Need for table as an alternative to measurement methods agreed.

•Proposal by PSA still objected

•General considerations by EU-COM (WLTP-DTP-13-05 - running resistances_EU.doc)

1) oriented towards "worst" case avoid incentive to apply default values.

2) Limited usage e.g. small series, number of vehicles, vehicle category

DTP-13: Agreement on principles to come to a solution necessary

Next steps: EU-Com and OICA will work on proposal

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 17

Comparison of RLD measurement methods (item 12)

•Solution 1:

Include all 3 methods which are defined in ISO standard:

coast down / torque meter / windtunnel

supported by Japan (scrutiny on windtunnel), EU (partly) and OICA

•Solution 2:

Define reference method in case of no equivalency (shown)

EU-COM (supported by NL) proposed coast down

Industry is asked to provide back-to-back data for all three methods

to show equivalency & repeatability

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 18

Other RLD issues

•Longitudinal slope for oval test track (item 36)

Within +/- 0.1% for total value?

•Rotating mass (item 38)

consistency within Annex 4 needs to be checked

•Calculation methods (item 39)

include all methods from ISO standard?

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 19






4) Next steps

Overview

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 20

Vehicle test mass / inertia / aerodynamic features / tyre selection (items 2 - 8)

Agreed: - test mass approach (interpolation TMh/TMl)

- stepless inertia (rounded to next kg, tolerance at dyno: 10 kg)

In principle agreed:

General concept how to include aerodynamic features and tyres

Drafting Task Force established

Still scrutiny reservation on aspects (Japan)

new open issues might rise up during drafting

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 21

Aspects to be confirmed:

•Movable body parts

“… shall operate during road load determination as intended under wltc test

conditions (temperature, speed, accelerations, no road inclination ...)”

•Payload factors

Based on Document WLTP-DTP-13-06 – Joint compromise proposal.ppt

from EU, Japan, Korea (and support of T&E):

Categories 1-1 / 1-2: 15%

Category 2: 28 %

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 22

Handling of multimode / default mode definition(items 33 / 34)

Solution 1:

•CO2/FE: test vehicle in default mode.

•If there is no default mode average best and worst case

Default mode definition:

“The default mode is defined as a single mode which is always selected when the vehicle is switched on regardless of the operating mode selected when the vehicle was previously shut down. The mode used for the default must not be able to be redefined by the customer / dealer.

Selectable shift lever design: The position appeared initially to drive the vehicle forward, after started the engine. (In case of [P-R-N-D-S-L], D is default mode.)”

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 23

Solution 1:

supported by Japan and India, but objections from EU

Solution 2:

•Average best and worst case, no default mode requirement

Not representative. Weighted averaging based on survey data instead?

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 24

Temperature setpoint and tolerances (items 14 / 15)

Solution 1:

•Setpoint: 23 °C

•Tolerances: Soak: ± 3 °C (5 min average)

Test start: ± 3 °C (1 Hz values)

Test cell: ± 5 °C (1 Hz values)

Note:

Test start tolerance only accepted with start condition of vehicle = setpoint ± 2 °C

depends on soak procedure approach

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 25

Tyre conditioning (RLD) (item 9)

Solution 1:

The tyres used for the test shall:

•not be older than 2 years after production date,

•not be specially conditioned or treated (e.g. heated or aged), with the exception

of grinding in the original shape of the tread.

•have a constant tread depth between 100 and 80 per cent of the original tread

depth over the full tread width of the tyre.

•be run-in on road for at least 200 km before road load determination.

Note: wording in OIT was revised based on LabProcICE-197rev1 by NL

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 26

Use of on-board anemometry (RLD) (item 13)

Solution 1:

Keep method in gtr (derived from ISO standard)

Former reservation from India withdrawn?

__________________________________________________________

Vehicle run-in mileage (RLD) (item 32)

Solution 1:

•10000 – 80000 km.

•Vehicles with min. mileage of 3000 km (on request of the manufacturer)

Scrutiny reservation from Japan

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 27






4) Next steps

Overview

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 28

Possible issues for post-validation

• GSI handling

• Monitoring of RCB of all batteries (correction procedure)

• Handling of aerodynamic options within test mass approach

• Normalization methods

• Effects of mode construction

• …

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 29






4) Next steps

Overview

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 30

Next steps

• DC drafting sessions

• f2f-Workshop in Berlin: 24. / 25. April 2013

• phone/web conferences

WLTP-DTP-13Tokyo, 21./22.03.2013


slide 31

Thanks for your attention.Thanks for your attention.

LabProcICE contact:

Béatrice Lopez de Rodas - beatrice.lopez(at)utac.com

Konrad Kolesa - konrad.kolesa(at)audi.de

Markus Bergmann – markus.bergmann(at)audi.de

Stephan Redmann – stephan.redmann(at)bmvbs.bund.de

Documents

WLTP-DTP-13 Tokyo, 21./22.03.2013 DTP Subgroup LabProcICE slide 1 Progress Report DTP Subgroup Lab Process Internal Combustion Engines (LabProcICE)WLTP-DTP-13