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A Study for Preventing Folding Defect of the Common Rail Pipe in Heading Process  

Song, Myung-Jun (Creative Engineering System, Pusan National Univ.)
Woo, Ta-Kwan (School of Mechanical Engineering, Pusan National Univ.)
Jung, Sung-Yuen (Research Institute of Mechanical Technology, Pusan National Univ.)
Hur, Kwan-Do (Department of Mechanical Engineering, Dongeui Univ.)
Kim, Chul (Research Institute of Mechanical Technology, Pusan National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.1, 2010 , pp. 25-32 More about this Journal
Abstract
With the latest automobile technology, though the third generation common rail system requires high injection pressures up to 1,800bar, the next generation diesel engine is expected to require more higher pressures than the third generation. The common rail pipe requires higher strength because it is one of the parts in the common rail system, which is influenced directly by fuel under high pressure. Preform design is very important for preventing head of the common rail pipe from folding in the heading process. In this study, die angle, curvature, outer diameter of die and length of trapped part are selected as main parameters to obtain best preform shape minimizing radius of folding. Therefore optimal design is carried out by finite element analysis and Taguchi method through main parameters. Results of the finite element analysis have good agreements with those of the experiments in the actual field.
Keywords
Heading Process; Folding defect; Preform; Process Design; Design of Experiments;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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