ISO/TS 17536-5:2018
(Main)Road Vehicles — Aerosol separator performance test for internal combustion engines — Part 5: Engine fractional efficiency test method and upstream distribution sampling method
Road Vehicles — Aerosol separator performance test for internal combustion engines — Part 5: Engine fractional efficiency test method and upstream distribution sampling method
This document defines standardized and repeatable test procedures by using internal combustion engines for the evaluation of blowby oil aerosol, and aerosol separators and filtering devices by specifying the engine blowby sampling procedure and engine fractional efficiency test in both open and closed crankcase ventilation systems running at steady state. Due to sampling requirements, measuring efficiency when there are transient flow conditions is not in scope. Separator life is not evaluated in this document. Conformance of a device to legislation is outside of the scope of this document.
Véhicules Routiers — Norme d'essai de performance des filtres des circuits fermés de ré-aspiration des gaz de carter moteur — Partie 5: Méthode d'essai d'efficacité fractionnaire moteur et méthode d'échantillonnage de la distribution amont
General Information
Standards Content (Sample)
TECHNICAL ISO/TS
SPECIFICATION 17536-5
First edition
2018-09
Road Vehicles — Aerosol separator
performance test for internal
combustion engines —
Part 5:
Engine fractional efficiency test
method and upstream distribution
sampling method
Véhicules Routiers — Norme d'essai de performance des filtres des
circuits fermés de ré-aspiration des gaz de carter moteur —
Partie 5: Méthode d'essai d'efficacité fractionnaire moteur et méthode
d'échantillonnage de la distribution amont
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 1
4 Measurement accuracy . 2
5 Test materials and test conditions . 2
5.1 Test oil and aerosol. 2
5.2 Absolute filter, wall flow trap and leakage . 2
5.3 Test conditions . 2
5.4 Aerosol Sampling System . 2
5.5 Particle Counter(s) sizing and counting monitor(s). 3
6 Test procedure . 3
6.1 General . 3
6.2 Test equipment . 4
6.3 Concentration Limit of the Particle Counter . 5
6.4 100 % Efficiency Test and Development of Purge Time . 5
6.5 Correlation Test . 5
6.6 Particle Counter(s) Zero . 5
6.7 Particle Counter(s) Sizing Accuracy . 5
6.8 Summary of Qualification Test Requirements . 5
6.9 Apparatus validation and maintenance . 6
7 Test Procedures . 6
7.1 General . 6
7.2 Fractional Efficiency Test Procedure . 7
7.3 Engine aerosol sampling procedure . 8
8 Calculations and data acceptance criteria for the engine fractional efficiency test.8
8.1 General . 8
8.2 Symbols and Subscripts used in the following equations . 9
8.3 Test Sampling . 9
8.4 Correlation Ratio .10
8.5 Penetration/Fractional efficiency .11
8.6 Efficiency .11
8.7 Data Reduction .11
Annex A (informative) Aerosol separator engine fractional efficiency test report .16
Annex B (normative) Test equipment .18
Annex C (normative) Poisson Statistics .21
Bibliography .23
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
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.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 34,
Propulsion, powertrain and powertrain fluids.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
A list of all parts in the ISO 17536 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
Introduction
Engine crankcase blowby is composed of combustion exhaust gases which have escaped to the
crankcase via piston ring seals and lube oil aerosols generated by thermal and mechanical action
within the engine. These gases are vented from the crankcase to prevent a build-up of high pressure.
The constituents of vented engine blowby gases are recognized as an undesirable contaminant and
technology for their containment is therefore evolving.
The device used to separate oil aerosols from the blowby typically releases cleaned gases to atmosphere
or into the air inlet prior to the engine or turbo compressor (if present). The latter has led to the
requirement for a pressure control device to isolate the engine from turbo inlet suction.
It is the purpose of this document to either define standardized and repeatable test procedures for the
evaluation of blowby oil aerosol separators and filtering devices using this engine fractional efficiency
test method and/or determining the size distribution of the blowby aerosol from the engine.
TECHNICAL SPECIFICATION ISO/TS 17536-5:2018(E)
Road Vehicles — Aerosol separator performance test for
internal combustion engines —
Part 5:
Engine fractional efficiency test method and upstream
distribution sampling method
1 Scope
This document defines standardized and repeatable test procedures by using internal combustion
engines for the evaluation of blowby oil aerosol, and aerosol separators and filtering devices by
specifying the engine blowby sampling procedure and engine fractional efficiency test in both open
and closed crankcase ventilation systems running at steady state. Due to sampling requirements,
measuring efficiency when there are transient flow conditions is not in scope.
Separator life is not evaluated in this document.
Conformance of a device to legislation is outside of the scope of this document.
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.
ISO 17536-1, Road vehicles — Aerosol separator performance test for internal combustion engines —
Part 1: General
3 Terms, definitions, and abbreviated terms
For the purposes of this document, the terms and definitions given in ISO 17536-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1 Terms and definitions
3.1.1
fractional separation efficiency
ability of the separator to remove particles of a specified size expressed as a percentage
3.2 Abbreviated terms
PSL polystyrene latex, referring to commercially available particles of various specific sizes
4 Measurement accuracy
The measurement accuracy of this document shall be in accordance with ISO 17536-1.
5 Test materials and test conditions
5.1 Test oil and a
...
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