内容包括介绍，柴油车颗粒捕集器的测试程序，柴油车 颗粒捕集器（DPF）的质量要求。（英文）.pdf

Filter Certification Protocol and Quality Requirements Gerhard Leutert, Ph.D. Former Director of the Air Pollution Control Division of the Swiss Federal Office for the Environment Air Consult - Consultancy in Air Pollution Control, Berne / Switzerland Technical Workshop on DPF Retrofit, Beijing, 27-28 October 2010 Content 1. Introduction 2. Testing procedure for Diesel particle filters (DPF) 3. Quality requirements for DPF Technical Workshop on DPF Retrofit, Beijing, 27-28 October 2010 Dr. Gerhard Leutert, Air Consult 2 Introduction 1. Filtration efficiency of Diesel particle filters (DPF) can be very different 2. Typical ranges of filtration efficiency: - Wall flow filters 98 - 99 % - Partial flow filters (“Open filters”) ≅30 % - Diesel oxidation catalysts (DOC) 5 % 3. Need for - Defined technical testing procedure - Quality criteria / requirements - Procedure to approve tested filters Technical Workshop on DPF Retrofit, Beijing, 27-28 October 2010 Dr. Gerhard Leutert, Air Consult 3 Swiss norm on DPF testing 1. Swiss norm SNR 277205 in force since 2007 2. Revised version (SN 277206) to be publish by the end of this year 3. Prescribes the technical testing procedure 4. Does not contain performance requirement (no “limit values”) 5. Setting performance requirements is left to - legislative authorities (if generally binding) - private associations (binding their own members) Technical Workshop on DPF Retrofit, Beijing, 27-28 October 2010 Dr. Gerhard Leutert, Air Consult 4 Legal significance of the norm 1. The norm is a technical consensus document, i.e. a recommendation.