Filter specifications comparison of requirements for filter efficiency

Filter specifications: comparison of requirements for filter efficiency Required Filtration Efficiency 3 -5 µm, % 100 80 60 40 20 0 In-line Pump Distributor Pump "Normal" conditions "Severe" conditions ISO/TR 13353: 1994 Time-Controlled HP Injection Systems 5. 1 © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. Improvement required depends on application, fuel contamination and life time 1 RBCP/SNS-Va

Filter specs: definition Definition of Filtration Efficiency è For BOSCH FIE filtration efficiency is defined according to the prestandard ISO/TR 13353: 1994. Required filtration efficiency depends on application, expected fuel contamination and required life time (see following slides). For specific values see corresponding TCI è In the meantime the standard ISO/TS 13353: 2002 has become valid. Main difference to the pre-standard is the calibration procedure è (ISO 11 171 instead ISO 4402). This requires an adaptation of the present values. The correlation is presently under preparation. è The International Standard Organization is working on a new multipass method (ISO/DIS 19438) which should substitute ISO/TS 13353 in a few years 5. 1 © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. 2 RBCP/SNS-Va

Filtration efficiency Definition of Filtration Efficiency Average Initial Efficiency, % 100 95 10 - 15 µm 15 - 20 µm 20 - 30 µm > 30 µm Filtration efficiency has to be improved under consideration of application, fuel contamination and life time 90 85 5 - 10 µm 80 75 70 3 - 5 µm 65 Test Method : ISO/TR 13353, Edition 1994 -10 -01 Flow Rate : 125 l/h Test Dust : ISO Fine Test Dust 60 0 5 10 15 20 25 30 Particle Size, µm 5. 1 © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. 3 RBCP/SNS-Va

Filter specification issue è TCD’s KM 45 110 004_en KM 45 110 005 and KM 45 110 007 describe Bosch requirements for fuel filter, water trap and allowed fuels for CR systems (CRS) è Bosch offers Fuel filters for PC/LD-applications which fulfill DSrequirements for filtration in both normal and severe conditions è Customers should be advised to use only the fuel filter with right specifications acc. to DS-requirements è Protection of the injection system only possible by means of a suitable filter system 5. 1 © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. 4 RBCP/SNS-Va

Filter specifications normal conditions 5. 1 © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. 5 RBCP/SNS-Va

Filter specifications severe conditions 5. 1 © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. 6 RBCP/SNS-Va