| DIESEL COLD FLOW EVALUATION USING DESIGN OF EXPERIMENT |
| J.-H. LEE1, Y.-Z. LEE2 |
1Korea Automobile Testing & Research Institute
2Sungkyunkwan University |
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| ABSTRACT |
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It is very important to supply the diesel fuel from fuel tank to combustion chamber in case of cold start procedure. Paraffin hydrocarbons are easily solidified at low fuel temperature and it can block the fuel supply to the high pressure fuel pump. In order to reduce the fuel crystallization (Waxing), not only cold flow additives have been developed butalso proper mounting design of fuel filter. Block heater in the fuel filter assembly have been also contained to improve the cold start and prevent blocking the fuel supply in Common Rail Direct Injection System. We need to make a test procedureof diesel cold flow evaluation to analyze the diesel cold flow characteristics. We can also obtain the design variables which have an effect to the diesel cold flow using the design of experiment and robust design. Finally the characteristics of diesel cold flow due to implementing cold flow evaluation test could be known. |
| Key Words:
Composited package fuel heater (CPFH), Separated fuel heater (SFH), Cloud point, Cold filter plugging point, Pour point, Positive temperature coefficient (PTC), Design of experiment, Robust design |
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