1. 5.1.5.1 © Robert Bosch GmbH 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. 1 Filter specifications: comparison of requirements for filter efficiency RBCP/SNS-Va Required Filtration Efficiency Improvement required depends on application, fuel contamination and life time 0 20 40 60 80 100 In-line Pump Distributor Pump Time-Controlled HP Injection Systems Filtration Efficiency 3-5 µm, % "Severe" conditions "Normal" conditions ISO/TR 13353:1994

2. 5.1.5.1 © Robert Bosch GmbH 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 Filter specs: definition RBCP/SNS-Va Definition of Filtration Efficiency  For BOSCH FIE filtration efficiency is defined according to the pre- standard 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  In the meantime the standard ISO/TS 13353:2002 has become valid. Main difference to the pre-standard is the calibration procedure  (ISO 11 171 instead ISO 4402). This requires an adaptation of the present values. The correlation is presently under preparation.  The International Standard Organization is working on a new multi- pass method (ISO/DIS 19438) which should substitute ISO/TS 13353 in a few years

3. 5.1.5.1 © Robert Bosch GmbH 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 Filtration efficiency RBCP/SNS-Va Definition of Filtration Efficiency 60 65 70 75 80 85 90 95 100 051015202530 Particle Size, µm Average Initial Efficiency, % 3 - 5 µm 5 - 10 µm 10 - 15 µm 15 - 20 µm20 - 30 µm> 30 µm Filtration efficiency has to be improved under consideration of application, fuel contamination and life time Flow Rate : 125 l/h Test Dust :ISO Fine Test Dust Test Method :ISO/TR 13353, Edition 1994-10-01

4. 5.1.5.1 © Robert Bosch GmbH 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 Filter specification issue RBCP/SNS-Va  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)  Bosch offers Fuel filters for PC/LD-applications which fulfill DS- requirements for filtration in both normal and severe conditions  Customers should be advised to use only the fuel filter with right specifications acc. to DS-requirements  Protection of the injection system only possible by means of a suitable filter system

5. 5.1.5.1 © Robert Bosch GmbH 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 Filter specifications normal conditions RBCP/SNS-Va

6. 5.1.5.1 © Robert Bosch GmbH 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 Filter specifications severe conditions RBCP/SNS-Va