WLTP-12 -13 e September 2015 Drafting Subgroup Audio/Web Meeting 16. 03. 2018 1
• These slides are based on the status of the GTR as of late August/early September, 2015. • The set of slides includes those submitted by BMW and the additional pollutants task force. 16. 03. 2018 2
I. Statement of technical rationale and justification 16. 03. 2018 3
September 2015 drafting meeting: Entire sentence deleted. Introduction, paragraph 5 OPEN POINT: 5. March 2015 drafting meeting. Japan proposes deleting the whole sentence or delete "fuel cells". 16. 03. 2018 4
II. Text of the global technical regulation 16. 03. 2018 5
September 2015 drafting meeting: n/v remains; ndv (= n divided by v) remains. II. 5. General requirements, Interpolation family § 5. 6. 1. , 5. 6. 3. , 5. 7. (d) n/v ratios (engine rotational speed divided by vehicle speed). This requirement shall be considered fulfilled if, for all transmission ratios concerned, the difference with respect to the transmission ratios of the most commonly installed transmission type is within 8 per cent; Text from H. Steven: Task: Harmonisation in the use of n/v throughout the GTR 16. 03. 2018 6
September 2015 drafting meeting: will be reviewed during the next EV sessions. II. 5. General requirements, § 5. 6. 2. Interpolation family for NOVC-HEVs and OVC-HEVs Task: The paragraph must be reviewed, especially concerning the references to the UN Regulations. 16. 03. 2018 7
September 2015 drafting meeting: will be reviewed during the next EV sessions. 5. 6. 3. (g) also rewritten to harmonise with 5. 6. 1. (d) II. 5. General requirements, § 5. 6. 3. Interpolation family for PEVs Task: The paragraph must be reviewed, especially concerning the references to the UN Regulations. 16. 03. 2018 8
September 2015 drafting meeting: EV yet to discuss this. II. 5. General requirements, § 5. 7. Road load family Task: Text proposal expected (M. Nägeli) 16. 03. 2018 9
II. 3. Definitions 16. 03. 2018 10
Definitions (mass) § 3. 2. d. September drafting meeting: the first 3. 2. d. in the gtr is adopted. PROPOSAL: 3. 2. d. "Test mass of the vehicle" means the sum of the actual mass of the vehicle, 25 kg and mass representative of the vehicle load. JPN: we thought it was decided like, 3. 2. d. “Test mass of the vehicle” means the sum of the mass of the vehicle in running order and its actually fitted optional equipment plus 25 kg and the mass representative of the vehicle load; 16. 03. 2018 11
September 2015 drafting meeting: WLTP GTR DRAFTING ISSUES TEXT OF GTR, DEFINITIONS, § 3. 2. 14. BMW #1 Currently being discussed in the road load task force; still under review. Change text: "Simulated road load" means the road load applied to the vehicle on a chassis dynamometer and is the sum of the losses of the vehicle itself plus the applied force of the dynamometer. Justification: - "simulated" is only used in the context of simulating road load on a chassis dyno and refers to the total road load, the vehicle is exposed to on a dyno (RR and drivetrain losses of the vehicle plus applied force by the chassis dyno). - Definition unclear improve. WLTP Drafting, BMW, 18. 08. 2015
WLTP GTR DRAFTING ISSUES TEXT OF GTR, DEFINITIONS, § 3. 5. 8. BMW #2 September 2015 drafting meeting: Appears not to have been wrapped up. Change 3. 5. 8. : 3. 5. 8. "Mode" means a distinct driver-selectable condition which affects emissions, or fuel or energy consumption. Justification: - "Modes" that do not effect emissions should not be considered (e. g. "night mode" of dashboard). WLTP Drafting, BMW, 18. 08. 2015
Definitions, § 3. 3. 10. September 2015 drafting meeting: To be discussed. Current GTR Text: 3. 3. 10. "Energy storage system" means the part of the powertrain on board a vehicle that can store chemical, electrical or mechanical energy and which can be refilled or recharged externally and/or internally. Proposal from W. Coleman: 3. 3. 10. "Energy storage system" means the part of the powertrain on board a vehicle that can store chemical, electrical or mechanical energy and release it in the same form as it was input which can be refilled or recharged externally and/or internally. 16. 03. 2018 14
Definitions, § 3. 3. 14. September 2015 drafting meeting: To be discussed. GTR Text: 3. 3. 14. "Hybrid electric vehicle" means a vehicle using at least one fuel consuming machine and one electric machine for the purpose of vehicle propulsion. Proposal from W. Coleman: 3. 3. 14. "Hybrid electric vehicle" means a hybrid vehicle where one of the energy converters is an electric machine. 16. 03. 2018 15
Definitions, § 3. 3. xx. September 2015 drafting meeting: To be discussed. GTR Text: 3. 3. xx. "Hydrogen fuel cell vehicle" means a vehicle powered by a fuel cell that converts chemical energy from hydrogen into electric energy, for propulsion of the vehicle. Task: Approval of the definition. (identical to the definitions in ECE-R 101 and ECE-R 83) 16. 03. 2018 16
Definitions, § 3. 4. 1. September 2015 drafting meeting: adopted. Current GTR: 3. 4. 1. "Manual transmission" means a transmission where gears are shifted by hand in conjunction with a manual disengagement of a clutch. Proposed definition (A. Feucht): 3. 4. 1. "Manual transmission" means a transmission where gears can only be shifted by action of the driver. Reasoning: There are vehicles (smart, A 2, …) where gears can only be shifted by action of the driver but where no manual disengagement of the clutch is necessary because the clutch is automated. Task: Approval of the proposed definition. 16. 03. 2018 17
Annex 1 WLTC March 22, 2015 18
WLTP DRAFTING, ANNEX 1 WLTC DIAGRAMS BMW #4 Old text: September 2015 drafting meeting: Have been sent, have yet to be incorporated. Annex 1 Ø CHANGE DIAGRAMS, THAT THE START AND EXACTLY AT THE PHASE LIMITS (SEE ARROWS). Ø OR: CHANGE TEXT, THAT IT TAKES THE TABLE AS THE ONLY VALID REFERENCE AND THE DIAGRAMS JUST AS "INFORMATION". WLTP Drafting TF, BMW, 19. 06. 2015 Page 19
September 2015 drafting meeting: still under discussion. WLTP GTR DRAFTING ISSUES ANNEX 1, DOWNSCALING, ADDITIONAL PROVISIONS, § 8. 4. 2. BMW #5 -Should provision for capped speed of electrified vehicles be used as well for ICE vehicles? WLTP Drafting, BMW, 18. 08. 2015
Annex 2 Gear selection, shift point determination 16. 03. 2018 21
WLTP GTR DRAFTING ISSUES ANNEX 2, § 2. (H), GEARSHIFTING. BMW #6 September 2015 drafting meeting: see comments from Japan on the next slide. Add sentence in paragraph 2. of Annex 2: . . . equally spaced. The power curve shall be determined according to Regulation No. 85. If the required data sets (n, Pwot) are not included already, they shall be added to the [regional] approval according to Regulation No. 85. - Clearly define the source of the used full load curve. - The full load curve shall be part of the approval (if not already). - Is the application of R 85 a regional issue or can be referred to R 85 within the GTR? WLTP Drafting, BMW, 18. 08. 2015
WLTP GTR DRAFTING ISSUES ANNEX 2, § 2. (H), GEARSHIFTING. BMW #6 September 2015 drafting meeting: Comments from Japan adopted. JPN: Better to be in line with definition 3. 7. 1. (i. e. add “current regional regulation” to proposal, or delete “current regional regulation” from 3. 7. 1. ) 3. 7. 1. "Rated engine power" (Prated) means maximum engine power in k. W as per the certification procedure based on current regional regulation. In the absence of a definition, the rated engine power shall be declared by the manufacturer according to Regulation No. 85. WLTP Drafting, BMW, 18. 08. 2015
Gear selection, § 2. (j)(e) September 2015 drafting meeting: Basically accepted but Rob Gardner to check the wording. Task: Clarification of the highlighted text. Within a period of 5 minutes, the vehicle, having the mass defined in the equation below, shall be able to pull away from standstill on an uphill gradient of at least 12 per cent in 2 nd gear on five separate occasions, pulling away 24 16. 03. 2018
Gear selection, § 2. (j)(e) September 2015 drafting meeting: Adopt (8) but not (9). Correlate with GTR j. (5). Already in the GTR as a definition. JPN: Definition of gross train mass or gross vehicle mass or max. trailer mass are missing. The definition of 1230/2012 could be used. (8) ‘technically permissible maximum laden mass of the combination’ (MC) means the maximum mass allocated to the combination of a motor vehicle and one or more trailers on the basis of its construction features and its design performances or the maximum mass allocated to the combination of a tractor unit and a semitrailer; (9) ‘technically permissible maximum towable mass’ (TM) means the maximum mass of one or more trailers that may be towed by a towing vehicle which corresponds to the total load transmitted to the ground by the wheels of an axle or a group of axles on any trailer coupled to the towing vehicle; 16. 03. 2018 25
Annex 4 Road load and dynamometer setting 16. 03. 2018 26
September 2015 drafting meeting: R. Cuelenaere to resend mails to these subjects. DC to incorporate accordingly. Information: The Annex 4 Task Force is reviewing all of Annex 4 but it has been requested to examine at the request of DC paragraphs 4. 2. 1. 7. 3. ; 4. 3. 1. 3. 2. ; 4. 3. 1. 3. 4. ; 4. 3. 2. 6. 6. ; 4. 5. 5. 1. ; 8. 1. 3. 2. 1. ; and 1. 1. , 1. 2. and 2. 2. of Annex 4, Appendix 1. 16. 03. 2018 27
September 2015 drafting meeting: WLTP GTR DRAFTING ISSUES Text ANNEX 4, § 3. 2. WIND TUNNEL CRITERIA. BMW #7 below 3. 2. deleted. Introductory sentence added. See gtr. Delete text below 3. 2. Wind tunnel criteria - All parts of the GTR using the criterion, are describing very clear for what and how to use them (see below). - The current sentence is even wrong, because now used for wind tunnel method as well. WLTP Drafting, BMW, 18. 08. 2015
WLTP DRAFTING, ANNEX 4, § 3. 2. 8. WIND TUNNEL CRITERIA, CP Old text: New text: Annex 4, 3. 2. 8. , "cp" September 2015 drafting meeting: Blue box approved. 2 per cent in the equation replaced by 0. 02. Reference to “per cent” in the text above it also replaced. The absolute difference of the pressure coefficient, cp, over a distance 2 metres ahead and 2 metres behind the vehicle and at a height of the center of jet shall not deviate more than ± 1 per cent Task: Text to the right yet to be approved. Ø Request of Japan, to define height. Ø It is not correct, to measure +/-2 meters to the balance center, as this would be not the criteria to be checked (has to be the vehicle!). Page 29 WLTP Drafting TF, BMW, 19. 06. 2015
WLTP GTR DRAFTING ISSUES ROAD LOAD, § 4. 2. 1. 3. 3. BMW #3 September 2015 drafting meeting: Adopted, GTR modified accordingly. Put new sub-paragraphs at the sentences shown 4. 2. 1. 3. 4. Energy range and transmission worst case 4. 2. 1. 3. 5. Calculation of H and L of interpolation family WLTP Drafting, BMW, 18. 08. 2015
September 2015 drafting meeting: Use version 6 as benchmark but 7. 2. 1. is still not complete. A. Feucht to make a concrete proposal. Annex 4, Road load, § 7. 2. 1. Inertia mass setting (page 1 of 2) Task: Section to be reviewed (During June drafting meeting: , C. Lueginger offered to review the section) 16. 03. 2018 31
EXPERT PROPOSAL: June drafting meeting: approval of the text in yellow and red. C. Lueginger to review this section Annex 4, Road load, § 7. 2. 1. Inertia mass setting (page 2 of 2) Task: Section to be reviewed (During June drafting meeting, C. Lueginger offered to review the section) 16. 03. 2018 32
WLTP DRAFTING, ANNEX 4, § 7. 2. 1. September 2015 drafting meeting: ROTATIONAL MASSES Old text: New text: Annex 4 7. 2. 1. Inertia mass setting The equivalent inertia mass of the chassis dynamometer shall be set to the test mass if a dual-axis chassis dynamometer is used. In the case that: (a) a single-axis chassis dynamometer is used; (b) a dual-axis chassis dynamometer where only one axle is used for representing the inertia; June drafting: Has to be redone. Place on hold. July: still in progress. the equivalent inertia mass shall be increased either by the equivalent effective mass of the standing wheels or by 1. 5 per cent of the sum of the mass in running order and 25 kilograms. If the chassis dynamometer is not capable to meet the inertia setting exactly, the next higher inertia setting shall be applied with a maximum increase of 10 kg. Ø ADDING 1. 5 % NOT DEPENDING ON THE DYNO DIRECTLY, BUT ON THE SITUATION, THAT ONE AXLE IS NOT TAKEN INTO ACCOUNT. SO ALSO ON A TWO AXLE DYNO DRIVEN WITH ONE AXLE ONLY. Ø PROPOSAL SHALL CONSIDER OF ANY CASE, THAT 1. 5% ARE ADDED IN THE CASE ONE AXLE IS NOT CONSIDERED FOR INERTIA. Page 33 WLTP Drafting TF, BMW, 19. 06. 2015
WLTP GTR DRAFTING ISSUES ANNEX 4, § 8. CHASSIS DYNO SETTING. BMW #10 September 2015 drafting meeting: proposed change adopted. Text incorporated in GTR as proposal. Change 8. 1. Chassis dynamometer setting by the coastdown method This method is applicable when f 0, f 1, f 2 values (N, N/(km/h)²) have been determined. - "Normal" chassis dyno setting to be applied not only in the case of coast down testing, but also for wind tunnel testing, calculated values, extrapolation method or torque meter method, if f 0, f 1, f 2 values have been determined. - The text should reflect, that this method is applicable, if "normal" road load values are available. WLTP Drafting, BMW, 18. 08. 2015
WLTP GTR DRAFTING ISSUES ANNEX 4, § 8. 2. 4. TORQUE METER METHOD. BMW #8 New first paragraph in 8. 2. 4. If the vehicle does not coast down in a repeatable manner and a coast down mode according to paragraph 4. 2. 1. 7. 5. is not feasible, the determination as well as the use of f 0, f 1, f 2 values may be omitted and paragraph 8. 2. 4. 1. applies. In any other case the procedure described in paragraphs 8. 2. 4. 2. to 8. 2. 4. 3. shall be performed. 8. 2. 4. 1. f 0' = c 0 / r f 1' = c 1 / r f 2' = c 2 / r where: c 0, c 1, c 2 are the running resistance coefficients determined in paragraph 4. 4. 4. of this Annex, Nm/(km/h), Nm/(km/h)²; r is the dynamic tyre radius of the vehicle with which the running resistance was determined, m. September 2015 drafting meeting: Adopted, text incorporated into the GTR as proposal. The determined f 0', f 1', f 2' values shall not be used for a chassis dynamometer setting or any emission or range testing. They shall be used only in the following cases: (a) determination of downscaling, paragraph 8. of Annex 1; (b) determination of gearshift points, Annex 2; (c) interpolation of CO 2 and fuel consumption, paragraph 3. 2. 3 of Annex 7; (d) calculation of results of electrified vehicles, paragraphs TBD. Move that paragraph to 8. 2. 4. 2. : Once the chassis dynamometer has been set within the specified tolerances, a vehicle coastdown shall be performed on the chassis dynamometer as outlined in paragraph 4. 3. 1. 3. The coastdown times shall be recorded. Shift following paragraphs by one: 8. 2. 4. 1. . 2 and. 2 . 3. - Downscaling, gearshifting and interpolation method need f 0, f 1, f 2 values, which are normally available also from the torque meter method. - In the case, that the vehicle cannot be coasted down under any reasonable condition, we need a fallback solution. - The proposed formula will be a worst case approach for (a) and (b) and is equivalent to "normal" f 0 f 1 f 2 for (c) and (d). WLTP Drafting, BMW, 18. 08. 2015
September 2015 drafting WLTP GTR DRAFTING ISSUES meeting: ANNEX 4, APPENDIX 1, § 2. 2. AND 2. 3. TORQUE Text incorporated into the GTR METER METHOD. BMW #9 as a proposal. Paragraphs 2. 2. and 2. 3. of Appendix 1 of Annex 4: 8. 2. 3. 2. The simulated road load, Fsj, and the target road load, Fs, shall be calculated according to the equations below, at each reference speed, vj: << formulas from Appendix 1 >> The simulated road load shall be within a tolerance of ± 10 N from the target road load, in the specified speed ranges, at each reference speed vj. If the tolerance at any reference speed does not satisfy the criterion of the method described in this paragraph, paragraph 8. 2. 3. 3. below shall be used to adjust the chassis dynamometer load setting. - Move these two formulas to paragraph 8. 2. 3. 2. - Explain the formulas better (what are the variables). It is intended to compare the simulated road load of the dyno with the target road load on the basis of a force. - Having done that, Appendix 1 appears to be not used any more and can be deleted. WLTP Drafting, BMW, 18. 08. 2015
Annex 5 Test equipment and calibrations 16. 03. 2018 37
September 2015 drafting meeting: No equation necessary. Adopted. Annex 5, Table A 5/1 and § 4. 2. 2. 2. Linear response of an analytical balance Is the number of points also not necessary? It was agreed to refer to the intercept as a 0 and the slope as a 1, but is an equation required in the form of y = mx +b, i. e. measured mass = a 0 + a 1 × actual mass Comment ADAM: In the paragraph above is written that „at least 4 equally-spaced reference weights shall be tested“. There is also mentioned that linear regression is applied. Therefore, an equation is not required. These modifications are approved by B. Giechaskiel (JRC). 16. 03. 2018 38
September 2015 drafting meeting: Remains as "is" Annex 5, § 7. 1. 1. Laser Diode Spectrometer (LDS) or Quantum Cascade Laser (QCL) • Comment ADAM: no 16. 03. 2018 LH – Agreed : the absorption line is chosen 39
September 2015 drafting meeting: remains open until task force meeting on September 16. Page 1 of 2 Annex 5, § 7. 2. 1. 2. Sampling for N 20 Task: Clarification of 7. 2. 1. 2. is required. Possible interpretation on the next slide. Comment ADAM: I try to clarify it. For each WLTC-phase one exhaust bag has to be filled -> 4 bags. For each WLTC-phase one dilution air bag has to be filled -> 4 bags; in total 8 bags Alternatively, it is sufficient to use the dilution air bag from WLTC_phase 1 -> 1 bag; in total 5 bags 16. 03. 2018 16/03/2018 dilution air bag sampled over the whole WLTC -> 1 bag; in total 5 bags or one 40
September 2015 drafting meeting: Page 2 of 2 Annex 5, § 7. 2. 1. 2. Sampling for N 20 Does this mean, that only 5 bags are required? Or, are 9 bags required? Why is this any different from the number of bags required for all other compounds? Possible rewording as Dubuc/Coleman understand the paragraph: During each phase of the test, a gas sample shall be taken for analysis from the corresponding diluted exhaust bag. Additionally, a gas sample shall be taken from LH : this is to reduce the amount of time spent for the GC-MS and is similar one of the following sources: to that applied for impinger and cartridge. For good practice, I think it should be individual phase bags for dilution air or 1 bag taken over the 1. The dilution air bag for each phase, or entire test ? Though in reality, the background N 2 O should be very stable 2. From the dilution air bag of phase 1 only, or given its sources in the atmosphere ? 3. From a single composite dilution air bag Comment ADAM: see previous slide 16/03/2018 41
September 2015 drafting meeting: adopted. Unit is m³. Comment ADAM: the unit is the same as for Vmix, m 3. Annex 5, § 7. 1. 2. 5. NH 3 measurement LH : the maximum lost amount of exhaust gas is 0. 5% of the total exhaust volume per phase as calculated from Vmix and the DF. The result is in m 3/phase Is the unit in Flow_lost_max m³ or smaller units, such as litres, which may account for the 0. 005 in the equation? 16. 03. 2018 (this test is still from the calculations from Moersch I presume that he used m 3 to be keep same units of the dilution tunnel. Leave it as it is) 42
September 2015 drafting meeting: Will be rewritten by Cova task force. Annex 5, § 7. 3. 1. 7. 1. Sampling for Ethanol Task: What happens if you are above the Lo. D? Also, for how many weeks, i. e. how long? Comment ADAM: delete the sentence „ The ethanol… proceed“; a weekly blank run is necessary as long as the Ethanol analysis is carried out. LH : A blank sampling run should have been taken within one week of the test ? 16. 03. 2018 16/03/2018 43
September 2015 drafting meeting: Adopted. Annex 5, § 7. 3. 1. 9. Sampling for Ethanol Task: Propose to change the title to : Calculations for GC from impingers and from diluted gas. Agreed? Comment ADAM/all: agreed 16. 03. 2018 16/03/2018 44
September 2015 drafting meeting: adopted. Text to be received from Cova. Annex 5, § 7. 3. 1. 9. Sampling for Ethanol Comment ADAM: 1. yes 2. I think that should be deleted from there 3. no Task: 1. There is no 7. 3. 1. 8. Should 7. 3. 1. 9. become 7. 3. 1. 8. ? 2. Can it be confirmed that 7. 3. 1. 9. is a title? 3. If so, can the titles in 7. 3. 1. 10. and 7. 3. 1. 11. be eliminated but the text "The limits…" and "Interference and…" be retained? 16. 03. 2018 16/03/2018 45
September 2015 drafting meeting: Clarified. Filter paper must not be defined. Annex 5, § 7. 4. 1. 4. 2. 1. Analysis formaldehyde and acetaldehyde Task: Should the grade of filter paper be clarified? Comment ADAM: No. The last sentence can be deleted as is seems to be a copy/paste error. Acrolein is not a target compound 16. 03. 2018 16/03/2018 46
Annex 6 Type 1 test procedure and test conditions 16. 03. 2018 47
September 2015 drafting meeting: Add in Annex 1: the tables describe the speed trace. "…. until the vehicle speed reaches the respective target speed again. " Annex 6, Test Procedure, § 1. 2. 6. 7. 4. 16. 03. 2018 16/03/2018 48
September: For electric energy, use k. Wh in Annex 8 and in Annex 6 App. 2. Conclusion: Annex 8 task force agenda? Niikuni-san to add this to Sept. 11 EV audio/web. Drafting Co. : contact UN ECE regarding the use of SI units. Comment: Should remain flexible even if UN ECE says that joules/MJ should be used, i. e. use k. Wh where appropriate. Page 1 of 2 Annex 6, Appendix 2, Test procedure for electric power supply system monitoring EXPERT PROPOSAL: 29. 07. 2014: Dr. Ligterink (TNO) and his colleague, Gerrit Kadijk, highlights inconsistencies within the GTR concerning units used in Annex 6, Appendix 2 (Test procedure for electric power supply system monitoring). The problem is whether (a) k. W. h, joules or megajoules should be used in equations, and, (b), whether k. W. h, joules or megajoiules should be used in the Willans factors, and (c) whether the equations are all correct. This applies also to Annex 7 (Calculations) and to Annex 8 (Evs). 16. 03. 2018 49
April IWG/drafting meeting (Stockholm): Rob Cuelenaere to investigate. Page 2 of 2 GTR Text: • Should energy content of fuel be in, megajoules, Wh or k. Wh? Consistency in the use of MJ or other units 16. 03. 2018 50
September 2015 drafting meeting: H. Schmidt and K. Kolesa confirm that the text was approved in Pune. GTR amended accordingly. Annex 6, Appendix 1, Test procedure periodically regenerating systems, § 1. General OPEN POINT: Was it agreed that this text is to be included under § 1. General? 16. 03. 2018 51
September 2015 drafting meeting: H. Schmidt and K. Kolesa confirm that the text was approved in Pune. GTR amended accordingly. Annex 6, Appendix 1, Test procedure periodically regenerating systems, § 2. OPEN POINT: Was this text adopted? 16. 03. 2018 52
September 2015 drafting meeting: contact Nick-san. Annex 6, Appendix 1, Test procedure periodically regenerating systems, § 3. 1. 1. EXPERT PROPOSAL: This paragraph was to have been checked by N. Ichikawa. Is the paragraph adopted? 16. 03. 2018 53
September 2015 drafting WLTP GTR DRAFTING ISSUES ANNEX 6, APPENDIX 2, § 1. RCB CORRECTION. BMW #12 meeting: follow progress Current text: Annex 6, Appendix 2 of Annex 8, App. 2 and match this appendix accordingly. - Is it clear enough, that if the vehicle has more than one battery: - all batteries are measured; YES - the threshold refers to the sum; - the correction is calculated using the sum of all Delta-RCBs of all batteries? - If not, whole Appendix 2 should be checked, as well as references in Annex 6 test. - Is the definition of battery / REESS clear? Is plus/minus energy in/out clear? WLTP Drafting, BMW, 18. 08. 2015
September 2015 drafting meeting: not a drafting issue. WLTP GTR DRAFTING ISSUES Small group to analyse these proposals. ANNEX 6, APPENDIX 2, § 2. 1. 1. RCB CORRECTION, MEASUREMENT TOLERANCE. BMW #11 Change text regarding tolerance in: Example average current, lower higher peak current [A] 5 15 >200 tolerance [A] 0. 025 0. 075 1. 000 tolerance [A] 0. 2 to measured value to full scale of 200 - ELECTRIC CURRENT CANNOT BE MEASURED WITH THAT ACCURACY, BECAUSE: - TAKING AN ACCURATE INSTRUMENT, IT WILL BE MAGNETIZED AND THEREFORE WILL HAVE AN OFFSET WITH THE FIRST ENGINE START (TOO HIGH CURRENTS); - TAKING AN INSTRUMENT FOR HIGH CURRENTS, CANNOT BE THAT ACCURATE. - TOLERANCE ON THE MEASURED VALUE IS NOT A TECHNICAL CORRECT WLTP Drafting, BMW, 18. 08. 2015 TOLERANCE, ONLY FULL SCALE TOLERANCE IS VALID (WHILE LIMITING 2. 1. 1. The battery current shall be measured during the tests using a clamp-on or closed type current transducer. The current transducer (i. e. a current sensor without data acquisition equipment) shall have a minimum accuracy of 0. 1 per cent of full scale, and the full scale shall be selected within the maximum electric load and the maximum load + 50%. - There are two solutions: - (1) Exclude current of starting the engine: - small energy error; - measurement accuracy can be maintained; - risk of wrong application (which wire to measure? ). - (2) Increase tolerance; no error in balanced energy; slightly lower accuracy; no risk of wrong application. - Favourite is option (2), which is reflected in the text.
WLTP DRAFTING, ANNEX 6, APPENDIX 2, 1. GENERAL BATTERY SOC CORRECTION Current text: Annex 6, Appendix 2 September 2015 drafting meeting: not a drafting issue. Small group to analyse these proposals. Ø IS IT CLEAR ENOUGH, THAT IF THE VEHICLE HAS MORE THAN ONE BATTERY: - ALL BATTERIES ARE MEASURED; - THE THRESHOLD REFERS TO THE SUM; - THE CORRECTION IS APPLIED TO THE SUM OF ALL DELTA-RCBS OF ALL BATTERIES? Ø IF NOT, WHOLE APPENDIX 2 SHOULD BE CHECKED, AS WELL AS REFERENCES IN ANNEX 6 TEST. Ø NEW: IS THE DEFINITION OF BATTERY / REESS CLEAR? IS PLUS/MINUS ENERGY IN/OUT CLEAR? WLTP Drafting TF, BMW, 19. 06. 2015 Page 56
September 2015 drafting meeting: Change all to all REESSs. GTR modified accordingly. Annex 6, Appendix 2, Test procedure for electric power supply system monitoring OPEN POINT: For all vehicle batteries? 16. 03. 2018 57
September 2015 drafting meeting: not a drafting issue. Small group to analyse these proposals. Annex 6, Appendix 2, § 2. Measurement equipment and instrumentation OPEN POINT: …current(s)…? 16. 03. 2018 58
Annex 7 Calculations 16. 03. 2018 59
September 2015 drafting meeting: OK. Annex 7, Calculations, § 3. 2. 1. 1. 1. Correction of DF for E 0 Task: Horiba points out that the numerator for E 0 should be 13. 5 and not 13. 4. T. Adam (Audi) agrees. 16. 03. 2018 60
September 2015 drafting meeting: adopted. Comment ADAM: Agreement with R. Gardner, the equation was taken from R 101 Annex 7, Calculations, § 3. 2. 1. 1. 1. Calculation of dilution factors Task: approval of the equation requested. 16. 03. 2018 61
September 2015 drafting meeting: not yet adopted. Wait until September 16 additional pollutants meeting. Annex 7, Calculations, § 3. 2. 1. 4. , 3. 2. 1. 5. , 3. 2. 1. 6. and 3. 2. 1. 7. Concentrations of N 2 O, NH 3, ethanol and carbonyl mass Task: Approval of paragraphs required. 16. 03. 2018 62
September 2015 drafting meeting: Annette: “Are to be” is correct. GTR amended. Comment ADAM: I think „shall be“ is correct? Annex 7, 3. 2. 2. 3. Aerodynamic drag of an individual vehicle Shall be included or that are included? Or, "are to be included"? 16. 03. 2018 63
September WLTP GTR DRAFTING ISSUES 2015 ANNEX 7, § 3. 2. 4. AND § 3. 2. 2. 3. MINOR EDITORIAL ISSUES. BMW drafting meeting: OK. #13, #14 Delete last "3"to become 3. 2. 4. Task: GTR modified accordingly (25. 08. 2015). Add subscript "ind" to 3. 2. 2. 3. to the sentence above the formula. Comment ADAM: ok Task: GTR modified accordingly (25. 08. 2015). WLTP Drafting, BMW, 18. 08. 2015
September 2015 drafting meeting: adopted. Annex 7, § 6. 13. Fuel consumption of a vehicle fueled by hydrogen Confirmation that d should be included in the list of variables. Comment ADAM: ok 16. 03. 2018 65
Annex 8 Pure electric, hybrid electric and compressed hydrogen fuel cell hybrid vehicles Annex 8 is still in a state of development. There will be at least 3 audio/webs in September to clarify open points and to do drafting. 16. 03. 2018 66
• September 2015 drafting meeting: Will be done in conjunction with post-processing. Annex 8 • Use of measured and/or recorded. 16. 03. 2018 67
• September 2015 drafting meeting: to be discussed in Tokyo; not highly important. Miscellaneous • "In the case that" could be replaced by "if". • Elimination of all equation numbers 16. 03. 2018 68
End 16. 03. 2018 69
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