Analysis and Optimization Design of Engine EGR Outlet Pipe Fracture Problem
An engine bench test in the research phase,the EGR outlet pipe has frequent fracture problems.Af-ter multiple rounds of assembly verification,engine vibration data analysis and reliability simulation analysis,the conclusion is drawn:Overspeed bench test 6450rpm reverse towing condition vibration is the main cause of frac-ture,assembly tolerance caused by forced displacement caused by y and x forces,stress concentration in the weak position of the corrugated section caused by fracture is a secondary cause.The EGR outlet pipe was opti-mized and improved,and the three-stage structure was adopted,and the middle section was connected with rub-ber tube,which was used to absorb vibration and assembly tolerances.has important reference significance for the future design of EGR system components.The solution of this problem is of important reference significance for the design of engine system components in the future.
NETL
NSTL
万方数据
维普
