Overview
ISO/TS 19713-2:2010 specifies laboratory methods for measuring the fractional efficiency of inlet air cleaning equipment for internal combustion engines and compressors against coarse particles (optical diameter 5 µm to 40 µm). Using ISO 12103-1 (Arizona test dust), the Technical Specification covers test aerosols, test-stand configuration, measurement accuracy, and performance metrics such as fractional efficiency, fractional penetration, airflow restriction / pressure loss, and dust loading behavior.
Key topics and requirements
- Scope of testing: Fractional efficiency tests for particles from 5 µm to 40 µm optical diameter; complementary Part 1 covers 0.3 µm to 5 µm.
- Test dust: Use of ISO 12103-1 (Arizona test dust) for both efficiency and loading challenges.
- Performance metrics:
- Initial fractional efficiency (before dust loading)
- Incremental fractional efficiencies measured at 10 %, 25 %, 50 % and 100 % of filter life (based on pressure loss)
- Pressure loss / airflow restriction during loading
- Test dust loading (mass collected at specified flow rate)
- Test aerosols:
- Low-concentration fractional efficiency aerosol (prevents coincidence errors; neutralized to Boltzmann equilibrium)
- High-concentration loading aerosol (for practical dust loading times)
- Instrumentation: Recommended particle measurement devices include optical particle counters (OPC) and aerodynamic particle counters (APC); guidance on particle diameter metrics (optical, geometric, aerodynamic) is provided.
- Test stand and procedures: Detailed configuration and orientation guidance, validation, routine operation, and isokinetic sampling requirements (Annex G).
- Data reduction and reporting: Normative annexes for efficiency and pressure-loss reduction (Annexes B and C) and an informative test report template (Annex A).
- Accuracy and validation: Accuracy requirements and validation procedures are addressed (Annex E).
Applications and who uses it
ISO/TS 19713-2:2010 is intended for:
- Air filter and air cleaner manufacturers - product development, verification and quality control.
- Vehicle OEMs and engine manufacturers - component selection and engine protection validation.
- Independent test laboratories - standardized comparative testing and certification services.
- R&D teams - studying filter media behavior under coarse-particle loading.
Practical uses include comparative performance ranking, warranty testing, design optimization for airflow vs. protection, and establishing life-based maintenance intervals.
Related standards
- ISO/TS 19713-1 - fractional efficiency testing with fine particles (0.3 µm to 5 µm)
- ISO 12103-1 - Arizona test dust (test dust specification)
- ISO 5011 - inlet air cleaning equipment performance testing (test-stand and procedures)
Keywords: ISO/TS 19713-2:2010, fractional efficiency, inlet air cleaning, coarse particles, air filter testing, ISO 12103-1, pressure loss, dust loading, optical particle counter.
Open preview (PDF)Road vehicles — Inlet air cleaning equipment for internal combustion engines and compressors — Part 2: Fractional efficiency testing with coarse particles (5 µm to 40 µm optical diameter)