ISO/TS 23556:2007
(Main)Performance test method for diesel engine soot-removal devices in lubricating oils — Initial filtration efficiency
Performance test method for diesel engine soot-removal devices in lubricating oils — Initial filtration efficiency
ISO/TS 23556:2007 specifies a multipass soot-filtration test method using batch thermal gravimetric analysis (TGA), continuous online Fourier Transformation Infrared (FTIR), or other approved soot-measuring techniques for evaluating the initial filtration efficiency of single-stage, multiple-stage, centrifugal and other soot-removal devices (SRD) for internal combustion engines submitted to a constant flow rate of test liquid. The test procedure determines time-weighted average initial soot-removal efficiency for soot-removal devices. This test method is intended for application to SRD having a rated flow between 0,5 l/min and 75 l/min.
Essai de performance de filtration pour moteurs diesel — Séparation des impuretés dans l'huile pour lubrification
General Information
Standards Content (Sample)
TECHNICAL ISO/TS
SPECIFICATION 23556
First edition
2007-03-15
Performance test method for diesel
engine soot-removal devices in
lubricating oils — Initial filtration
efficiency
Essai de performance de filtration pour moteurs diesel — Séparation
des impuretés dans l'huile pour lubrification
Reference number
ISO/TS 23556:2007(E)
©
ISO 2007
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ISO/TS 23556:2007(E)
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ii © ISO 2007 – All rights reserved
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ISO/TS 23556:2007(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Symbols (and abbreviated terms) . 2
5 Test equipment . 2
6 Test materials. 4
7 Accuracy of measuring instruments and test condition variations . 4
8 Test rig validation . 5
9 Multipass test procedure . 5
Annex A (normative) Method to determine oil cleanliness. 7
Annex B (normative) Specification for test soot slurry. 8
Annex C (normative) Test oil requirements. 9
Annex D (normative) Test data presentation. 10
Annex E (normative) Test data calculations. 11
Annex F (normative) Test report. 12
Bibliography . 13
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ISO/TS 23556:2007(E)
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
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International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of normative document:
— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in
an ISO working group and is accepted for publication if it is approved by more than 50 % of the members
of the parent committee casting a vote;
— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting
a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a
further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is
confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an
International Standard or be withdrawn.
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.
ISO/TS 23556 was prepared by Technical Committee ISO/TC 70, Internal combustion engines, Subcommittee
SC 7, Tests for lubricating oil filters.
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TECHNICAL SPECIFICATION ISO/TS 23556:2007(E)
Performance test method for diesel engine soot-removal
devices in lubricating oils — Initial filtration efficiency
IMPORTANT — The test method specified in this Technical Specification has not been proven by a
round robin exercise.
1 Scope
This Technical Specification specifies a multipass soot-filtration test method using batch thermal gravimetric
analysis (TGA), continuous online Fourier Transformation Infrared (FTIR), or other approved soot-measuring
techniques for evaluating the initial filtration efficiency of single-stage, multiple-stage, centrifugal and other
soot-removal devices (SRD) for internal combustion engines submitted to a constant flow rate of test liquid.
The test procedure determines time-weighted average initial soot-removal efficiency for soot-removal devices.
This test method is intended for application to SRDs having a rated flow between 0,5 l/min and 75 l/min.
2 Normative references
The following referenced documents are indispensable for the application 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 1219-1, Fluid power systems and components — Graphic symbols and circuit diagrams — Part 1:
Graphic symbols for conventional use and data-processing applications
ISO 3968, Hydraulic fluid power — Filters — Evaluation of differential pressure versus flow characteristics
ISO 4405, Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the
gravimetric method
ISO 11841-1, Road vehicles and internal combustion engines — Filter vocabulary — Part 1: Definitions of
filters and filter components
ISO 11841-2, Road vehicles and internal combustion engines — Filter vocabulary — Part 2: Definitions of
characteristics of filters and their components
DHD-1:2001, Global Performance Specification of Diesel Engine Oil
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11841-1, ISO 11841-2 and the
following apply.
3.1
soot-removal device
SRD
device intended to remove soot from lubricating oil
NOTE SRDs include single-stage, multiple-stage, centrifugal and other devices.
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ISO/TS 23556:2007(E)
3.2
soot contaminant
carbon-based contaminant produced to simulate soot generated from a diesel engine
3.3
multipass test
test that consists of recirculating treated fluid through the soot-removal device
3.4
base upstream gravimetric level
upstream contaminant concentration if no contaminant is recirculated
3.5
soot-removal device efficiency
ability of the soot-removal device to retain particles, expressed as the time-weighted average of soot mass
that has been captured by the SRD relative to the mass offered to it
3.6
total circuit volume
total volume of the circuit with a straight section of pipe plus the volume contained in the soot-removal device
NOTE For installation, see Clause 9, No. 2).
4 Symbols (and abbreviated terms)
The graphical symbols used in this Technical Specification are in accordance with ISO 1219-1.
5 Test equipment
5.1 Test rig
A diagram of the test rig is shown Figure 1. It shall comprise a filter test circuit as described in 5.2.
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