wltp drafting tf, "recorded" bmw, 11.05.2015 christoph lueginger distinguish between...

WLTP DRAFTING TF, "RECORDED"

BMW, 11.05.2015Christoph Lueginger

DISTINGUISH BETWEEN MEASURED AND RECORDED

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.

WLTP DRAFTING TF, "RECORDED"#1, RECORDED MEASURED


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".



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 ]




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.



Annex 4, 4.3.2.3. No need to keep the signals after F0F1F2 was calculated. Delete "and recorded".


DC: accept the proposal to delete "and recorded"?



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"?



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.



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.



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".



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).



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).



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"?



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"?



Annex 6, 1.2.8.6. No need to keep signal after evaluation and application of CO2

correction. Change "recorded" into "measured".

Annex 6, Test procedure, Emissions test (Type 1 test).




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



END

wltp drafting tf, "recorded" bmw, 11.05.2015 christoph lueginger distinguish between...

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