1、BSI Standards PublicationBS ISO 17536-1:2015Road vehicles Aerosolseparator performance test forinternal combustion enginesPart 1: GeneralBS ISO 17536-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 17536-1:2015.The UK participation in its preparation was
2、 entrusted to TechnicalCommittee MCE/22, Engines for road vehicles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication
3、. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 77824 7ICS 43.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on
4、30 November 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 17536-1:2015 ISO 2015Road vehicles Aerosol separator performance test for internal combustion engines Part 1: GeneralVhicules routiers Essai de performance du sparateur darosols pour les moteurs combust
5、ion interne Partie 1: GnralitsINTERNATIONAL STANDARDISO17536-1First edition2015-12-01Reference numberISO 17536-1:2015(E)BS ISO 17536-1:2015ISO 17536-1:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified,
6、 no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs me
7、mber body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 17536-1:2015ISO 17536-1:2015(E)Foreword ivIntroduction v1 Scope . 12 Terms, definitions, symbols and
8、units . 12.1 Terms and definitions . 12.2 Symbols and units 43 Measurement equipment accuracy . 44 Absolute filter, wall flow trap and leakage 54.1 Absolute filter. 54.1.1 Absolute filter material 54.1.2 Absolute filter mass measurement method . 54.1.3 Absolute media measurement process validation 5
9、4.2 Wall flow trap . 54.2.1 Weight measurement . 54.2.2 Validation of wall flow trap liquid oil efficiency . 54.2.3 Validation of wall flow trap aerosol efficiency . 64.3 Leakage 65 Principles for aerosol separator performance tests . 65.1 General . 65.2 Test equipment . 65.2.1 Grounding 65.2.2 Upst
10、ream sample probe 75.2.3 Upstream particle counter 75.2.4 Particle counter calibration 75.2.5 Maximum particle concentration 75.2.6 Particle counter flow 85.3 Determination of gravimetric separation efficiency 85.3.1 General 85.3.2 Calculations 8Annex A (normative) Explanation of differential pressu
11、re and pressure loss of an aerosol separator 10Annex B (normative) Test equipment 11Annex C (informative) Aerodynamic diameter .13Annex D (informative) Isokinetic sampling probes and information .15Annex E (informative) Life reference 18Annex F (normative) Validation of the absolute filter media 19A
12、nnex G (normative) Leakage 20Annex H (informative) Determination of maximum efficiency aerosol concentration 21Annex I (informative) Test equipment Wall flow trap design 22Bibliography .23 ISO 2015 All rights reserved iiiContents PageBS ISO 17536-1:2015ISO 17536-1:2015(E)ForewordISO (the Internation
13、al 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 e
14、stablished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standard
15、ization.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
16、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 an
17、y patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement
18、.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible f
19、or this document is Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 34, Propulsion, powertrain and powertrain fluids.ISO 17536 consists of the following parts, under the general title Road vehicles Aerosol separator performance test for internal combustion engines: Part 1: General Part
20、 3: Method to perform engine gravimetric test Technical SpecificationThe following parts are under preparation: Part 2: Laboratory gravimetric test method Technical Specification Part 4: Laboratory fractional test method Part 5: Method to perform engine fractional test Technical Specificationiv ISO
21、2015 All rights reservedBS ISO 17536-1:2015ISO 17536-1:2015(E)IntroductionEngine 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 need to
22、be 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 clea
23、ned gases to atmosphere or alternatively returns the cleaned product to the combustion process by feeding into the engine air intake prior to the turbo compressor (if present). The latter has led to the requirement for a pressure control device to isolate the engine crankcase from air intake pressur
24、e.The engine test methods presented in ISO 17536 are general guidelines for performing an engine test.Annexes A to I specify general and common provisions for aerosol separator performance test. ISO 2015 All rights reserved vBS ISO 17536-1:2015BS ISO 17536-1:2015Road vehicles Aerosol separator perfo
25、rmance test for internal combustion engines Part 1: General1 ScopeThis part of ISO 17536 specifies general conditions, defines terms and establishes the basic principles for blowby oil aerosol separator performance tests by laboratory or engine and gravimetric or fractional test method.2 Terms, defi
26、nitions, symbols and units2.1 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.2.1.1blowbyaerosol produced from engines and released through a crankcase vent2.1.2oil carryovertotal amount of liquid oil captured in the downstream wall flow trap2.1.3fil
27、ter elementreplaceable part of the crankcase system, consisting of the filter material and carrying frame2.1.4crankcase ventilation systemdevice which separates oil and particles from the engine blowby before venting to either the engine (closed crankcase ventilation, CCV) or the environment (open c
28、rankcase ventilation, OCV)2.1.5differential pressuredifference in static pressure measured immediately upstream and downstream of the unit under test2.1.6pressure lossmeasure of the loss of aerodynamic energy caused by an aerosol separator at the observed air flow rate due to different flow velociti
29、es at the measuring point.Note 1 to entry: It is expressed as the differential pressure corrected for any difference in the dynamic head at the measuring pointsNote 2 to entry: For further information, see Annex A.2.1.7wall flow trapdevice to capture oil that is flowing along the wallsNote 1 to entr
30、y: The wall flow trap design is drawn in Figure I.2.INTERNATIONAL STANDARD ISO 17536-1:2015(E) ISO 2015 All rights reserved 1BS ISO 17536-1:2015ISO 17536-1:2015(E)2.1.8absolute filterfilter downstream of the unit under test to retain the contaminant passed by the unit under test2.1.9piezometer tubed
31、uct that has a hole or holes drilled in the wall to obtain a pressure readingNote 1 to entry: For further information, see Figure B.2.2.1.10separator efficiencyability of the aerosol separator or the unit under test to remove contaminant under specified test conditions2.1.11optical diameteroptical e
32、quivalent diameterDo,idiameter of a particle of the type used to calibrate an optical sizing instrument that scatters the same amount of light as the particle being measuredNote 1 to entry: Optical diameter depends on the instrument, the type of particle used to calibrate the instrument (usually pol
33、ystyrene latex spheres), and the optical properties of the particle being measured.2.1.12aerodynamic diameteraerodynamic equivalent diameterDaediameter of a sphere of density 1 g/cm3with the same terminal velocity due to gravitational force in calm air, as the particle being measuredNote 1 to entry:
34、 Annex C provides additional information about aerodynamic diameter.Note 2 to entry: Aerodynamic diameter depends on the instrument, the type of particle used to calibrate the instrument (usually polystyrene latex spheres), and the properties of the particle being measured.2.1.13pressure regulatorde
35、vice between the outlet of the aerosol separator and air intake to regulate the crankcase pressure in high vacuum conditions2.1.14mass oil flowmass amount of oil per unit time2.1.15relief valvedevice to direct a portion of the flow around a separation device due to a pressure difference, usually ven
36、ting to the atmosphere2.1.16bypass valvedevice to direct a portion of the flow around a separation device due to pressure difference, usually venting downstream of the bypassed separation device2.1.17challenge aerosoloutput from the aerosol generator or engine which corresponds to the distribution i
37、n testing and with the amount of the mass feed rateNote 1 to entry: The aerosol distribution by mass is prescribed in ISO/TS 17536-2.2 ISO 2015 All rights reservedBS ISO 17536-1:2015ISO 17536-1:2015(E)2.1.18particle sizepolystyrene latex equivalent size expressed as a diameter in micrometers2.1.19is
38、okinetic samplingsampling in which the flow in the sampler inlet is moving at the same velocity and direction as the flow being sampledNote 1 to entry: Annex D provides additional information about isokinetic sampling.2.1.20particle counterinstrument for sizing and/or counting aerosol particlesNote
39、1 to entry: Recommended particle counters are optical particle counters (in accordance with ISO 21501-1) or other counters demonstrating good correlation in measuring particle sizes such as aerodynamic particle counters.2.1.21coefficient of variationCOVstandard deviation of a group of measurements d
40、ivided by the mean2.1.22unit under testUUTeither a single aerosol separator element or a complete crankcase ventilation system2.1.23open crankcase ventilationOCVaerosol separator system that is attached to the crankcase and is vented to the environment2.1.24closed crankcase ventilationCCVaerosol sep
41、arator system that is attached between the crankcase and the engine2.1.25aerosol separatordevice that separates oil from the blowby stream or test stand airstream2.1.26high efficiency particulate air filterHEPA filterfilter having 99,95 % efficiency at most penetrating particle size (class H13 in ac
42、cordance with EN 1822), or 99,97 % (or higher) fractional efficiency at 0,3 m using dispersed oil particulate (DOP) aerosol as defined by IEST RP-CC001 recommended practice2.1.27inertial separatordevice that separates oil from the blowby stream using inertia2.1.28combination separatordevice that sep
43、arates oil from the blowby stream using inertia as well as a filter element2.1.29rated air flowflow rate specified by the user or manufacturerNote 1 to entry: The rated air flow is usually used as the test air flow. ISO 2015 All rights reserved 3BS ISO 17536-1:2015ISO 17536-1:2015(E)2.1.30test air f
44、lowmeasure of the quantity of air pushed or drawn through the aerosol separator per unit time2.1.31aerosol generatorlaboratory equipment that can produce a simulated blowby particle distribution from oil and compressed airNote 1 to entry: The aerosol distribution by mass is prescribed in ISO/TS 1753
45、6-2.2.1.32drainage vesseldevice that captures the separated oil from the crankcase separation system, not to include oil carryoverNote 1 to entry: Filter life is not used in all parts of ISO 17536. Life reference is given in Annex E.2.1.33mass feed ratemass amount of challenge aerosol or liquid subj
46、ected to the unit under test per unit timeNote 1 to entry: Filter life is not used in all parts of ISO 17536. Life reference is given in Annex E.2.2 Symbols and unitsQuantity Symbol UnitVolume flow rate qVl/minVelocity v m/sDensity kg/m3Mass flow rate qmg/hPressure p PaDifferential pressure pdPaPres
47、sure loss plPaMass m gTime t sSpeed N rev/minTorque T N-m3 Measurement equipment accuracyAir flow rate to within 5 % of reading.Differential pressure to within 25 Pa of reading.Temperature to within 1,5 C of reading.Mass to within 0,1 g except for absolute filter mass and downstream wall flow trap.M
48、ass to within 0,01 g for absolute filter mass and downstream wall flow trap.Relative humidity (RH) with an accuracy of 2 % RH.Barometric pressure to within 3 hPa.Crankcase pressure to within 25 Pa of reading4 ISO 2015 All rights reservedBS ISO 17536-1:2015ISO 17536-1:2015(E)RPM to within 0,5 % of ma
49、ximum engine speedTorque within 2 % of operating torqueLeak rate shall be Vc) Sub-isokinetic sampling, Vs VKey1 limiting streamline2 sampling nozzleVair velocity entering the probeVSfree stream velocity approaching the inletFigure D.1 Types of aerosol samplingFigure D.2 Types of sampling nozzles ISO 2015 All rights reserved 17BS ISO 17536-1:2015ISO 17536-1:2015(E)Annex E (informative) Life referenceThe useful life of blowby removal devices is an important parameter to be considered when cho
