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Document Title | EU/TNO WLTP correction algorithms draft study | ||||||||
Reference Number | WLTP-08-37 | ||||||||
Date |
17 Nov 2014
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Summary | TNO draft report on "Correction algorithms for WLTP chassis dynamometer and coast-down testing". | ||||||||
Source(s) | TNO | ||||||||
Rulemaking Area(s) | GTR No. 15 WLTP | ||||||||
Meeting(s) | |||||||||
Related Documents | |||||||||
WLTP-08-38 | EC cover note accompanying the draft TNO WLTP correction algorithms report | ||||||||
Downloads | |||||||||
UNECE server | .docx format | ||||||||
Excerpts from session reports related to this document | |||||||||
WLTP | Session 8 | 18-20 Nov 2014 |
#43: FC calculations: Draft text will be provided to the drafting coordinator and NL suggested crosschecking the proposal with item 2.3 of the calculation algorithms proposal by EC (WLTP-08-38e). Position paper (WLTP-08-38e) was presented by EU-COM with the aim to decide on a package of procedures for harmonization and a timeframe for inclusion into gtr (priorities A, B, C). The focus lies on issues with priority A (immediate EU implementation & introduction in gtr in phase1B) and B (further investigation and introduction in phase1B). Proposal on item 2.7 (inaccuracy of road load setting on the chassis dyno) was withdrawn during discussions. A first view was given by ACEA (WLTP-08-46, -08-47 by BMW): Item 6.2 (Rotational inertia mass) needs in view of ACEA further investigation. JPN will provide its positions in IWG meeting #9, with the focus on items with rank of A or B. (note: inclusion of other items in WLTP phase 2 needs to be discussed separately, see agenda item 11) India requested information about data basis for indicated possible deviations. EU COM referred to details in the report of TUG / TNO (WLTP-08-37e). EU will clarify the immediate need for introduction of a cycle correction in European legislation before adoption of WLTP phase 1B. Chair recommends TF to continue the discussion focusing on the A-Elements and later on the B-Position. All Contracting Parties are strongly requested to give a clear position, if this approach should be handled in general within the scope of WLTP gtr and if yes, which of the proposed items are supported to be harmonized within phase 1B. (Deadline for feedback: 02.01.2015). Additional assessments with a view on technical aspects / possible difficulties and necessary validations are also welcomed. Position paper (WLTP-08-38e) was presented by EU-COM with the aim to decide on a package of procedures for harmonization and a timeframe for inclusion into gtr (priorities A, B, C). The focus lies on issues with priority A (immediate EU implementation & introduction in gtr in phase1B) and B (further investigation and introduction in phase1B). Proposal on item 2.7 (inaccuracy of road load setting on the chassis dyno) was withdrawn during discussions. A first view was given by ACEA (WLTP-08-46, -08-47 by BMW): Item 6.2 (Rotational inertia mass) needs in view of ACEA further investigation. JPN will provide its positions in IWG meeting #9, with the focus on items with rank of A or B. (note: inclusion of other items in WLTP phase 2 needs to be discussed separately, see agenda item 11) India requested information about data basis for indicated possible deviations. EU COM referred to details in the report of TUG / TNO (WLTP-08-37e). EU will clarify the immediate need for introduction of a cycle correction in European legislation before adoption of WLTP phase 1B. Chair recommends TF to continue the discussion focusing on the A-Elements and later on the B-Position. All Contracting Parties are strongly requested to give a clear position, if this approach should be handled in general within the scope of WLTP gtr and if yes, which of the proposed items are supported to be harmonized within phase 1B. (Deadline for feedback: 02.01.2015). Additional assessments with a view on technical aspects / possible difficulties and necessary validations are also welcomed. |
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