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WLTP DRAFTING TF, "RECORDED" BMW, 11.05.2015 Christoph Lueginger DISTINGUISH BETWEEN MEASURED AND RECORDED
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Page 2 WLTP DRAFTING TF, "RECORDED" INTRODUCTION AND PROPOSAL WLTP Drafting TF, BMW, 11.05.2015 Proposal: Every value, that should be recorded in a test sheet / report / whatever should be marked as "recorded". This should help regional legislation to identify, what should appear in official documents. Every test result, that is only needed temporarily (e.g. RCB signal during test, velocity signal during coast down), and is further processed (not a final value), should be marked as "measured". If necessary, we could put a sentence to the GTR, that "measured data" should be kept at the OEM for [TBD] years. This issue was a task identified by the Admin-WG. QUESTION FROM DC: Expert opinion is requested.
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Page 3 WLTP DRAFTING TF, "RECORDED" #1, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 4, 4.3.1.2. No need to keep the signals after F0F1F2 was calculated. Delete "and recorded". This is in the section on the coastdown method using stationary anemometry. DC PROPOSAL: accept the proposed change to delete "and recorded".
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Page 4 WLTP DRAFTING TF, "RECORDED" #2, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 4, 4.3.2.1.1. No need to keep the signal after F0F1F2 was calculated. Delete "shall be recorded". This is in the section on the coastdown method using on-board anemometry. Restructuring of the sentence and deletion of "shall be recorded" DC PROPOSAL: Relative wind speed shall be measured at a minimum frequency of 1 Hz and to an accuracy of 0.3 m/sec. [The next sentence remains unchanged ]
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Page 5 WLTP DRAFTING TF, "RECORDED" #2, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 This is in the section on the coastdown method using on-board anemometry. DC PROPOSAL: Wind direction shall be relative to the direction of the vehicle. The relative wind direction (yaw) shall be measured with a resolution of 1 degree and an accuracy of 3 degrees; the dead band of the instrument shall not exceed 10 degrees and shall be directed towards the rear of the vehicle.
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Page 6 WLTP DRAFTING TF, "RECORDED" #3, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 4, 4.3.2.3. No need to keep the signals after F0F1F2 was calculated. Delete "and recorded". This is in the section on the coastdown method using on-board anemometry. DC: accept the proposal to delete "and recorded"?
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Page 7 WLTP DRAFTING TF, "RECORDED" #4, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 4, 4.4.2.2. No need to keep the signals after F0F1F2 was calculated. Change "recorded" into "measured". This is from measurement of running resistance using the torque meter method. DC: accept the proposal to change "recorded" into "measured"?
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Page 8 WLTP DRAFTING TF, "RECORDED" #5, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 4, 6.4.2. No need to keep the signal after cd*A was calculated. Delete "recorded". The last sentence in the paragraph below has been changed to: The aerodynamic drag shall be measured at least for [60] seconds and at a minimum frequency of [5] Hz. The result shall be the average drag during the measurement. COMMENT FROM DC: Has already been incorporated into the GTR.
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Page 9 WLTP DRAFTING TF, "RECORDED" #6, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 4, 6.5.2.2.5. No need to keep the signal after force was calculated. Delete "recorded". This paragraph is in the section on the flat belt measurement. DC PROPOSAL: Delete the second sentence, as it says what the first sentence says.
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Page 10 WLTP DRAFTING TF, "RECORDED" #7, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 5, 2.2.7. No need to keep dyno velocity signal after evaluation (e.g. drive trace error) was done. Change "recorded" into "measured". Annex 5, Test equipment: "The following specific requirements relate to the dynamometer manufacturer's specifications." PROPOSAL: Change "recorded" to "measured".
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Page 11 WLTP DRAFTING TF, "RECORDED" #8, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 DC asks: 3.4.3.3.1. concerns calibration of a CFV constant volume sampler. Assuming the variable flow restrictor is operated by hand, are the data also recorded by hand? DC: 3.4.3.3.3. appears to be OK. Annex 5, 3.4.3.3.1. and consequently 3.4.3.3.3. Signals should be measured (for subsequent calculations), but not kept. Change "recorded" into "measured" (2x).
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WLTP DRAFTING TF, "RECORDED" #9, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 DC asks: 3.4.5.7.2. concerns calibration of a UFM constant volume sampler. Assuming the flow valve is operated by hand, are the data also recorded by hand? DC: 3.4.5.8. appears to be OK. Annex 5, 3.4.5.7.2. and consequently 3.4.5.8. Again, signals should be measured (for subsequent calculations), but not kept. Change "recorded" into "measured" (2x).
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Page 13 WLTP DRAFTING TF, "RECORDED" #10, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 5, 4.3.1.3.6. Again, signals should be measured (for subsequent calculations), but not kept. Delete "and recorded". Annex 5, Test equipment "Particle number emissions measurement equipment. DC: Does the subgroup agree with deleting "and recorded"?
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Page 14 WLTP DRAFTING TF, "RECORDED" #11, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 6, 1.2.6.4.5. No need to keep dyno velocity signal after evaluation (e.g. drive trace error) was done. Change "recorded" into "measured". Annex 6, Test procedure. Vehicle preconditioning [The word "vehicle" is understood before the word "speed"]. DC: Does the subgroup agree with replacing "recorded" with "measured"?
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Page 15 WLTP DRAFTING TF, "RECORDED" #12, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 6, 1.2.8.6. No need to keep signal after evaluation and application of CO 2 correction. Change "recorded" into "measured". Annex 6, Test procedure, Emissions test (Type 1 test). DC: Does the subgroup agree with replacing "recorded" with "measured"?
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Page 16 WLTP DRAFTING TF, "RECORDED" #13, RECORDED MEASURED WLTP Drafting TF, BMW, 11.05.2015 Annex 7, 2.1.1. No need to keep signal after evaluation. Change the first of the two "recorded" into "measured". Annex 7, Calculations. Determination of diluted exhaust gas volume DC: Does the subgroup agree with replacing "recorded" with "measured"?
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Page 17 WLTP Drafting TF, BMW, 11.05.2015 END
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