EN 17507:2021
(Main)Road vehicles - Portable Emission Measuring Systems (PEMS) - Performance assessment
Road vehicles - Portable Emission Measuring Systems (PEMS) - Performance assessment
This document defines the procedures for assessing the performance of test equipment that is used for the on-road measurement of tailpipe emissions of light-duty vehicles, on the basis of a common test procedure that simulates the range of conditions experienced during on-road tests.
This document prescribes:
- the tests to be conducted, and,
- a procedure to determine, for any type of PEMS equipment, an appropriate uncertainty margin to reflect its performance over those conditions.
The key test variables are as follows (but not limited to the ones mentioned):
a) temperature, humidity and pressure and step-wise or gradual changes,
b) acceleration and deceleration (longitudinal and lateral),
c) vibration, inclination and shock tests,
d) instrument positioning on a vehicle,
e) combinations of (1) to (4),
f) cross-interferences,
g) signal-processing, data treatment and time alignment, and
h) calculation methods (excluding the regulatory post-processing of data).
Straßenfahrzeuge - Mobile Abgasmesssysteme (PEMS) - Leistungsbewertung
Véhicules routiers - Systèmes portatifs de mesure des émissions (PEMS) - Vérification de la performance
Le présent document définit les procédures d'évaluation de la performance des équipements d’essai qui sont utilisés pour les mesures sur route d'émissions d'échappement de véhicules légers, sur la base d'une procédure d’essai commune simulant la gamme des conditions rencontrées pendant des essais sur route.
Le présent document spécifie :
- les essais à réaliser, et
- une procédure permettant de déterminer, pour tout type d’équipement PEMS donné, une marge d'incertitude appropriée afin de refléter sa performance dans toutes les conditions suivantes.
Les variables d'essai clés sont les suivantes (mais non limitées à celles mentionnées) :
a) température, humidité et pression (y compris des variations échelonnées ou progressives),
b) accélération et décélération (longitudinale et latérale),
c) essai de vibrations, d'inclinaison et de chocs,
d) positionnement de l'instrument sur un véhicule,
e) combinaisons de (a) à (d),
f) brouillages réciproques,
g) traitement des signaux, traitement des données et alignement temporel, et
h) méthodes de calcul (sauf post-traitement réglementaire des données).
Cestna vozila - Prenosni sistemi za merjenje emisij (PEMS) - Ocenjevanje delovanja
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2021
Cestna vozila - Prenosni sistemi za merjenje emisij (PEMS) - Ocenjevanje
delovanja
Road Vehicles - Portable Emission Measuring Systems (PEMS) - Performance
Assessment
Straßenfahrzeuge - Mobile Abgasmesssysteme (PEMS) - Leistungsbewertung
Véhicules routiers - Systèmes portatifs de mesure des émissions (PEMS) - Vérification
de la performance
Ta slovenski standard je istoveten z: EN 17507:2021
ICS:
43.180 Diagnostična, vdrževalna in Diagnostic, maintenance and
preskusna oprema test equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17507
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2021
EUROPÄISCHE NORM
ICS 43.180
English Version
Road vehicles - Portable Emission Measuring Systems
(PEMS) - Performance assessment
Véhicules routiers - Systèmes portatifs de mesure des Straßenfahrzeuge - Mobile Abgasmesssysteme (PEMS)
émissions (PEMS) - Vérification de la performance - Leistungsbewertung
This European Standard was approved by CEN on 11 July 2021.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17507:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and symbols . 6
3.1 Terms and definitions . 6
3.2 Symbols and abbreviations . 8
3.3 List of subscripts . 11
4 Document structure including requirements, responsibilities and results . 11
5 On-road testing process using PEMS . 12
6 PEMS requirements and specifications . 14
6.1 General requirements . 14
6.2 Auxiliary equipment . 15
6.3 Global Navigation Satellite System . 15
6.4 Exhaust gas parameters . 15
6.5 General requirements for gas analysers . 17
6.6 Analysers for measuring (solid) particle emissions (particle number) . 19
7 PEMS Performance testing . 21
7.1 Uncertainty assessment for PEMS performance testing according to GUM . 21
7.2 General requirements . 22
7.3 Gaseous analysers . 24
7.4 Particle number analysers . 32
7.5 Exhaust mass flow meter (EFM) . 43
7.6 Global Navigation Satellite System (distance measurement) . 44
8 Motivation and methods for uncertainty evaluation . 45
8.1 Alpha and Beta-Error . 45
8.2 Transfer to emission testing . 46
8.3 Measurement uncertainty as part of the measurement result . 47
8.4 Methods for uncertainty evaluation (GUM type A and B) . 47
9 Uncertainty evaluation of PEMS measurements (Type A – experimentally) . 48
9.1 Measurement uncertainty during PEMS validation and on-road conditions . 48
9.2 Uncertainty contributions on the testing process (Ishikawa-Diagram) . 49
9.3 Determination of the combined measurement uncertainty I - PEMS validation . 52
9.4 Determination of the combined measurement uncertainty II – PEMS on board . 56
10 Uncertainty evaluation of on-road testing (Type B – non experimentally) . 60
10.1 General. 60
10.2 Calculation of the combined uncertainty of the individual mass m . . 61
i
10.3 Calculation of combined uncertainty of total mass M (u∑m) . 61
10.4 Evaluation of covariance to calculate the combined uncertainty of M . 63
10.5 Sources of uncertainty, weight (ω) and LO value (γ) . 65
10.6 Systematic error u due to dynamics and time alignment error Δi . 74
ΔM
10.7 Uncertainty of the emission measurement U . 75
E
Annex A (normative) Procedure of linearity verification . 77
Annex B (normative) Additional requirements for gas analysers . 79
Annex C (normative) Determination of the reference uncertainty of chassis dynos u . 84
CAL
Bibliography . 85
European foreword
This document (EN 17507:2021) has been prepared by Technical Committee CEN/TC 301 “Road
vehicles”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2022, and conflicting national standards shall be
withdrawn at the latest March 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
The intention of this document is to determine the measurement uncertainty of mobile vehicle exhaust
emission testing equipment (e.g. Portable Emissions Measurement Systems, PEMS) under consideration
of applicable legal requirements (e.g. European Legislation on Light-Duty Real Driving Emission
measurement, RDE).
The specific aims include the following:
— To be able to assess PEMS (for gaseous and particle number emissions) under various operating
environments with the intention of predicting PEMS performance and uncertainty over the whole
range of conditions used. For the time being, it focusses on light-duty-vehicle application and serves
as a basis for assessing the uncertainty of heavy-duty emission measurement using PEMS.
— To be able to evaluate the deviation of gaseous PEMS under various light-duty on-road test
conditions and heavy-duty PEMS test conditions against known analyser systems under standard
laboratory conditions for the specified gas, which is traceable to national or international primary
standards.
— To be able to evaluate the deviation of Particle Number (PN) - PEMS under various light-duty on-
road test conditions and heavy-duty PEMS test conditions against a known analyser system under
standard laboratory conditions for the same sample, which is traceable to national or international
primary or secondary standards.
— To define the means for demonstrating that the PEMS equipment is stable and the measurement
quality is sufficient between PEMS equipment service intervals.
— To provide input to the development of future specifications and quantified information about
instrument and process accuracy to help improve the accuracy and robustness of PEMS systems and
on-road measurements.
— To set a framework for determining the measurement uncertainty by analysing available data and
providing a method for data evaluation.
In particular, the derivation of the uncertainty according to all parts of the document allows the following:
— The instrument measurement uncertainty can be evaluated.
— The instrument measurement uncertainty on-road can be reported as a part of the measurement
result following ISO 10012:2003.
— The results of an investigation based on this document provides information about the suitability of
the equipment for the intended use.
— Transparency with respect to the instrument measurement uncertainty of currently available
equipment.
— Transparency with respect to the testing processes for the measurement uncertainty.
— Assessment of the statistical significance of the difference of measurement results.
1 Scope
This document defines the procedures for assessing the performance of test equipment that is used for
the on-road measurement of tailpipe emissions of light-duty vehicles, on the basis of a common test
procedure that simulates the range of conditions experienced during on-road tests.
This document prescribes:
— the tests to be conducted, and
— a procedure to determine, for any type of PEMS equipment, an appropriate uncertainty margin to
reflect its performance over those conditions.
The key test variables are as follows (but not limited to the ones mentioned):
a) temperature, humidity and pressure (including step-wise or gradual changes),
b) acceleration and deceleration (longitudinal and lateral),
c) vibration, inclination and shock tests,
d) instrument positioning on a vehicle,
e) combinations of (a) to (d),
f) cross-interferences,
g) signal-processing, data treatment and time alignment, and
h) calculation methods (excluding the regulatory post-processing of data).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 29463 (all parts), High-efficiency filters and filter media for removing particles in air (ISO 29463
(all parts))
ISO 27891:2015, Aerosol particle number conce
...
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