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An Analytical Study by Variation of Die and Plug Angle in Drawing Process for the Strength Optimization of Ultra High Pressure Common Rail Fuel Injection Tube Raw Material
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 Title & Authors
An Analytical Study by Variation of Die and Plug Angle in Drawing Process for the Strength Optimization of Ultra High Pressure Common Rail Fuel Injection Tube Raw Material
Ahn, Seoyeon; Park, Jungkwon; Kim, Yonggyeom; Won, Jongphil; Kim, Hyunsoo; Kang, Insan;
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 Abstract
The study is actively being performed to increase fuel injection pressure of common rail system among countermeasures to meet the emission regulation strengthen of the Diesel engine. The common rail fuel injection tube in such ultra high pressure common rail system has the weakest structural characteristics against vibration that is generated by fuel injection pressure and pulsation during engine operation and driving. Thus the extreme durability is required for common rail fuel injection tube, and the drawing process is being magnified as the most important technical fact for strength of seamless pipe that is the raw material of common rail tube. In this respect, we analyzed the characteristic of dimension and stress variation of the ultra high pressure common rail fuel injection tube by variation of Die and Plug angle in drawing process. Based on the analysis, we tried to obtain the raw material strength of common rail fuel injection tube for applying to the ultra high pressure common rail system. As a result, Plug angle is more important than entry angle of Die and we could obtain the target dimension and strength of the ultra high pressure common rail fuel injection tube through optimization of Plug angle.
 Keywords
Direct injection diesel engine;Common-rail system;Ultra high pressure fuel tube;Drawing process;Finite element method;
 Language
Korean
 Cited by
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