标准摘要
[中文适用范围]： 本文件规定了连续注入污染物并使用在线颗粒计数方法的多通道过滤测试，以评估内燃机全流式润滑油过滤器的性能。 本文件的范围仅限于稳态条件，不涉及流量的波动。 测试程序确定过滤器的污染物容量、颗粒去除特性和压差。 该测试适用于颗粒尺寸大于 10 μm 时效率低于 99% 的过滤元件。 注：需要在一个或多个测试装置中内置多个测试流量回路，以覆盖 2 l/min 至 600 l/min 的完整流量范围。 [外文原描述]： ISO 4548-12:2017 specifies a multi-pass filtration test with continuous contaminant injection and using the online particle counting method for evaluating the performance of full-flow lubricating oil filters for internal combustion engines. The scope of this document is limited to steady state conditions and does not address fluctuations in the flow rate. The test procedure determines the contaminant capacity of a filter, its particulate removal characteristics and differential pressure. This test is intended for application to filter elements with an efficiency of less than 99 % at particle size greater than 10 μm. NOTE Several test flow loops built into one test rig, or several test rigs, would be necessary to cover the complete flow range of 2 l/min to 600 l/min.
英文名称Methods of test for full-flow lubricating oil filters for internal combustion engines — Part 12: Filtration efficiency using particle counting and contaminant retention capacity