The IEUP Development on the Yunnei 4D44 Diesel Engine
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To meet the needs of diesel engine industry,an IEUP fuel injection system was developed.In the IEUP,multiple EUPs were integrated into one inline-pump body to replace the traditional inline-pump.Based on experiments,the IEUP inject performance with different pipe length and engine speed was discussed.The IEUP was applied to an YN4D44 diesel engine and the inject flow was optimized in this paper.Experiments prove that the optimized IEUP diesel is highly improved.