نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Many internal combustion engines have one or two heat shields that have been installed on the exhaust manifold to avoid the heat transfer to upper parts of the engine, such as the valve cover. In some engines, this part fails due to the fracture and then causes the engine noise and other failures in the engine. In this analysis, root causes of the failure were determined based on the fish bone diagram. In this research, the failure of a heat shield of the spark engine has been investigated and the finite element method (FEM) simulation was used for its design improvement. The analysis of the studied heat shield with the RCA method showed that the malfunction and the assembly problem were both root causes of this failure. Therefore, this part has been produced by dimensional and geometrical approaches. In addition, the heat shield was not a significant problem in the material. Therefore, to prevent this failure, in addition to removing all odds of the production according to CAE results, have any suggestion for increasing the strength of this part includes the fillet creation, edge bending up or down and the rib creation.
کلیدواژهها [English]
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