This Technical Report describes the investigation into diesel vehicle common rail fuel injector sticking problems in a number of countries across Europe since 2005\/2006, carried out by the CEN\/TC 19\/WG 24\/IDID Task Force. It provides conclusions following this work that have been adopted by CEN.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 5<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | 1 Scope 2 Normative references 3 Symbols and abbreviations <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 4 Summary 5 Description of injector sticking problems Figure 1 \u2014 Types of injector deposits (courtesy PSA) <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Figure 2 \u2014Example of caboxylate injector deposits (courtesy Daimler) 6 FIEM\/OEM experience <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 7 Changes influencing internal injector deposits 8 Deposit forming mechanism <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Figure 3 \u2014 FTIR analysis of injector deposits from the French market (data courtesy Ford) Figure 4 \u2014 FTIR analysis of injector deposits (data courtesy Afton Chemical Ltd) 9 Potential sources of sodium in diesel fuel <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 10 Corrosion inhibitors 11 Investigations in France <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Figure 5 \u2014 Sodium levels in key European markets and the USA (Source SGS surveys) Figure 6 \u2014European diesel survey on sodium (in mg\/kg) (data courtesy CONCAWE) <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Figure 7 \u2014 Field measurements of sodium (in mg\/kg) in FAME (data courtesy AGQM) <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 12 Investigations in Spain Figure 8 \u2014Internal common-rail injector deposits from a light duty vehicle (courtesy Repsol) Figure 9 \u2014Internal nozzle deposits in heating oil burners (courtesy Repsol) <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Figure 10 \u2014 GC-MS chromatograms from all deposits adhered to nozzle needle (red line) and corrosion inhibitor additive (green line) after solubilisation and derivatisation process <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 13 Investigations in Denmark Table 1 \u2014 Acid Number of different corrosion inhibitor additives Figure 11 \u2014 Filter Blocking Tendency (FBT) vs. additive concentration (in mg\/kg) <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Table 2 \u2014 FBT vs. acid lubricity additive content at different sodium contents Figure 12 \u2014 FBT vs. acid lubricity additive content at different sodium contents 14 Conclusions <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 15 Future work <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Liquid petroleum products. Investigation on internal diesel injector sticking deposits mechanisms and the impacts of corrosion inhibitors<\/b><\/p>\n |