ISO 4548-5:2020 PDF

Methods of test for full-flow lubricating oil filters for internal combustion engines — Part 5: Test for hydraulic pulse durability

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Title (English):

ISO 4548-5:2020

Methods of test for full-flow lubricating oil filters for internal combustion engines — Part 5: Test for hydraulic pulse durability

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 9
Publication date:: March 9, 2020
Edition:: ISO IS 4548 edition 3 version 1
ICS:: 27.020

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Description (English):

This document specifies a method of testing the ability of full-flow lubricating oil filters manufactured with metal pressure vessel materials for internal combustion engines to withstand an internal pressure surge. Normally surges occur when an engine is started from cold, and cyclic internal pressure variations experienced during operation. These tests are intended for application to spin-on type filters and detachable filters with disposable elements. The tests can be applied to other filters, if thought applicable, by agreement between the filter manufacturer and the purchaser. NOTE This test is not intended to replace simulated environmental testing (e.g. at very low temperatures). If such testing is required, it will be the subject of negotiation between the supplier and customer.

Technical details

Technical committee: ISO/TC 70/SC 7 - Tests for lubricating oil filters
SKU: ISO 4548-5:2020

Abstract

Overview

ISO 4548-5:2020 defines a standardized method to evaluate the hydraulic pulse durability of full‑flow lubricating oil filters for internal combustion engines. The standard specifies how to simulate internal pressure surges (for example, cold‑start spikes and cyclic pressure pulses during operation) so that spin‑on and detachable filters with disposable elements can be assessed for canister and seal integrity under repeated internal pressure cycling.

Key topics and technical requirements

Scope and applicability: Intended for filters made with metal pressure vessel materials; can be applied to other types by agreement between manufacturer and purchaser. Not a substitute for extreme environmental testing (e.g., very low temperature).
Test rig and waveform: Provides a typical circuit (accumulator, pump, valves, pressure sensor) and a representative pulse waveform. Cycle rate is normally 0.5–2 Hz unless otherwise agreed.
Test fluid and temperature: Use oil with viscosity class ISO VG 22; temperature 60 °C ± 10 °C (note kinematic viscosity reference at 63 °C).
Instrumentation and accuracy: Pressure, time and temperature measurement accuracy requirements are specified (pressure ±5 %, time ±0.002 s, temperature ±1 °C; test condition variation for temperature ±2 °C). Pressure transducers and recording equipment must have combined frequency response 0–2 kHz with amplitude ratio within 0 dB to −3 dB.
Test procedure: Fit filter to manufacturer torque/angle, purge air, set accumulator and relief pressures, initiate cyclic pressure pulses and run until failure or agreed number of cycles. Record cycles to failure and inspect failure mode/location.
Reporting and statistics: Test report must include filter ID, test conditions (pressure, cycle rate, temperature, fluid), mode/location of failure, and cycles to failure. For multiple samples calculate mean, standard deviation and - when >7 samples - B10 life via Weibull analysis (ISO 19973-1 referenced).
Default test values: Annex A gives default pressure and cycle counts by filter category (e.g., Spin‑on light duty: extreme 1 000 kPa / 1 000 cycles; normal 500 kPa / 25 000 cycles) for cases with no manufacturer agreement.
Validation: Annex B summarizes round‑robin results used to verify the procedure.

Applications

Design validation and development of engine oil filters
Supplier qualification and OEM acceptance testing
Quality control and batch verification
Failure analysis, warranty investigations and durability benchmarking

Who should use this standard

Filter manufacturers and design engineers
Engine OEMs and procurement/quality teams
Test laboratories and certification bodies
R&D and reliability engineers focused on engine lubrication systems

Related standards

ISO 4548‑1 (differential pressure/flow characteristics)
ISO 19973‑1 (Weibull life analysis / B10)
ISO 1219‑1 (graphical symbols)
ISO 9110‑1 / ISO 9110‑2 (instrument/procedure conformance)

Keywords: ISO 4548-5:2020, hydraulic pulse durability, lubricating oil filter testing, full‑flow filter, spin‑on filter, internal combustion engine filter standards.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Scope and applicability: Intended for filters made with metal pressure vessel materials; can be applied to other types by agreement between manufacturer and purchaser. Not a substitute for extreme environmental testing (e.g., very low temperature).
Test rig and waveform: Provides a typical circuit (accumulator, pump, valves, pressure sensor) and a representative pulse waveform. Cycle rate is normally 0.5–2 Hz unless otherwise agreed.
Test fluid and temperature: Use oil with viscosity class ISO VG 22; temperature 60 °C ± 10 °C (note kinematic viscosity reference at 63 °C).
Instrumentation and accuracy: Pressure, time and temperature measurement accuracy requirements are specified (pressure ±5 %, time ±0.002 s, temperature ±1 °C; test condition variation for temperature ±2 °C). Pressure transducers and recording equipment must have combined frequency response 0–2 kHz with amplitude ratio within 0 dB to −3 dB.
Test procedure: Fit filter to manufacturer torque/angle, purge air, set accumulator and relief pressures, initiate cyclic pressure pulses and run until failure or agreed number of cycles. Record cycles to failure and inspect failure mode/location.
Reporting and statistics: Test report must include filter ID, test conditions (pressure, cycle rate, temperature, fluid), mode/location of failure, and cycles to failure. For multiple samples calculate mean, standard deviation and - when >7 samples - B10 life via Weibull analysis (ISO 19973-1 referenced).
Default test values: Annex A gives default pressure and cycle counts by filter category (e.g., Spin‑on light duty: extreme 1 000 kPa / 1 000 cycles; normal 500 kPa / 25 000 cycles) for cases with no manufacturer agreement.
Validation: Annex B summarizes round‑robin results used to verify the procedure.

Applications

Design validation and development of engine oil filters
Supplier qualification and OEM acceptance testing
Quality control and batch verification
Failure analysis, warranty investigations and durability benchmarking

Who should use this standard

Filter manufacturers and design engineers
Engine OEMs and procurement/quality teams
Test laboratories and certification bodies
R&D and reliability engineers focused on engine lubrication systems

Related standards

ISO 4548‑1 (differential pressure/flow characteristics)
ISO 19973‑1 (Weibull life analysis / B10)
ISO 1219‑1 (graphical symbols)
ISO 9110‑1 / ISO 9110‑2 (instrument/procedure conformance)

Keywords: ISO 4548-5:2020, hydraulic pulse durability, lubricating oil filter testing, full‑flow filter, spin‑on filter, internal combustion engine filter standards.

ISO 4548-5:2020 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications

Who should use this standard

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications

Who should use this standard

Related standards

Related standards

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