GB/T 8243.12-2021Methods of test for full flow lubricating oil filters for internal combustion engines - Part 12: Filtration efficiency using particle counting and contaminant retention capacity (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
May 21, 2021
Implementation date
December 1, 2021
Scope
GB/T 8243.12-2021 (Methods of test for full flow lubricating oil filters for internal combustion engines - Part 12: Filtration efficiency using particle counting and contaminant retention capacity) is available as an English-translated PDF.
GB/T 8243.12-2021 is the Chinese standard "Methods of test for full flow lubricating oil filters for internal combustion engines - Part 12: Filtration efficiency using particle counting and contaminant retention capacity".
Its scope clause reads: This part of GB/T 8243 stipulates that under continuous injection test impurity conditions, the online particle counting method is used for multiple passes.
The filter test is used to evaluate the performance of the full-flow oil filter for internal combustion engines. The scope of this part is limited to steady-state conditions, and the flow rate does not fluctuate in the case of.
This section applies to the determination of filter dust holding capacity, particle removal characteristics and differential pressure. This section applies to filter elements with a filtration efficiency of less than 99% for particles larger than 10µm.
Note. In order to cover the entire flow range of 2L/min~600L/min, it may be necessary to build several test flow loops on a test bench, or Inspector. Its clauses include terms and definitions.
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Document preview — GB/T 8243.12-2021
National Standard of the People's Republic of China
- Classification
- J 91
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbol
- 5 Test equipment and materials
- 5.1 Test equipment
- 5.1.1 Test bench
- 5.1.2 Online dilution and particle counting system
- 5.1.3 Timer
- 5.2 Test material
- 5.2.1 Test impurities
- 5.2.2 Test solution
- 6 Accuracy of measuring instruments and test conditions
- 7 Test bench verification
- 7.1 Verification of the filter test circuit
- 7.2 Verification of the impurity injection circuit
- 7.3 Verification of the online dilution and particle counting system
- 8 Preliminary preparation
- 8.1 Test filter assembly
- 8.2 Impurity injection circuit
- 8.3 Filter test circuit
- 9 Test procedure
- 9.1 Initial value measurement
- 9.2 Performance test
- 10 Calculate and report test results
- 10.1 Calculation
- 10.1.1 General requirements
- 10.1.2 Mass concentration
- 10.1.3 Filtration efficiency
- 10.1.4 Nominal micron particle size
- 10.1.5 Quality of injected impurities
- 10.1.6 The quality of unfiltered impurities
- 10.1.7 Dust holding capacity of the filter
- 10.2 Test report
- Appendix A (Normative appendix) Technical requirements for test fluid for oil filter test
- Appendix B (informative appendix) Typical filter test report
- Appendix C (Normative Appendix) Calculation of Filtration Efficiency
- Appendix D (informative appendix) Joint comparison test
- References
1 Scope
This part of GB/T 8243 stipulates that under continuous injection test impurity conditions, the online particle counting method is used for multiple passes.
The filter test is used to evaluate the performance of the full-flow oil filter for internal combustion engines. The scope of this part is limited to steady-state conditions, and the flow rate does not fluctuate in the case of.
This section applies to the determination of filter dust holding capacity, particle removal characteristics and differential pressure.
This section applies to filter elements with a filtration efficiency of less than 99% for particles larger than 10µm.
Note. In order to cover the entire flow range of 2L/min~600L/min, it may be necessary to build several test flow loops on a test bench, or
Inspector.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
ISO 2942 hydraulic transmission filter element structural integrity verification and initial bubble point determination (Hydraulicfluidpower-
Filterelements-Verificationoffabricationintegrityanddeterminationofthefirstbubblepoint)
ISO 3968 Hydraulic power filter pressure drop-evaluation of flow characteristics (Hydraulicfluidpower-Filters-
Evaluationofdifferentialpressureversusflowcharacteristics)
ISO 4021 Hydraulic transmission particle impurity analysis Extract liquid samples from operating system pipelines (Hydraulicfluidpower-Par- ticulatecontaminationanalysis-ExtractionoffluidsampLesfromlinesofanoperatingsystem)
ISO 4405 Hydraulic transmission liquid impurities are determined by gravimetric method (Hydraulicfluidpower-Fluidcon- tamination-Determinationofparticulatecontaminationbythegravimetricmethod)
ISO 11171 hydraulic fluid power automatic particle counter calibration (Hydraulicfluidpower-Calibrationofauto- maticparticlecountersforliquids)
ISO 11943 Hydraulic fluid power online automatic particle counting system calibration and verification method (Hydraulicfluidpower-
On-lineautomaticparticle-countingsystemsforliquids-Methodsofcalibrationandvalidation)
ISO 12103-1.2016 Test Impurities for Filter Evaluation of Road Vehicles Part 1.Arizona Test Dust (Road vehicles-Testcontaminantsforfilterevaluation-Part 1.Arizonatestdust)
3 Terms and definitions
The following terms and definitions defined by ISO 11841-1 and ISO 11841-2 apply to this document.
3.1 Multi-passtest
The unfiltered liquid repeatedly circulates through the test of the filter element.
GB/T 8243.6 | GB/T 14097 | GB/T 23341.1 | GB/T 8243.14 | GB/T 8243.5 | GB/T 8243.15 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 57 pages — is available in the English PDF.
Referenced standards
Normative references
ISO 2942 · ISO 3968 · ISO 4021 · ISO 4405 · ISO 11171 · ISO 11943 · ISO 12103
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Related Standards
GB/T 8243.13-2015 — Methods of test for full flow lubricating oil filters for internal combustion engine -- Part 13: Static burst pressure test for composite filter housings
GB/T 8243.11-2007 — Methods of test for full-flow lubricating oil filters for internal combustion engines -- Part 11: Self-cleaning filters
GB/T 8243.14-2020 — Methods of test for full-flow lubricating oil filters for internal combustion engines - Part 14: Cold start simulation and hydraulic pulse durability for composite filter housings
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