A study of robust design of exhaust manifold for gasket leakage Online publication date: Tue, 09-Apr-2019
by Chulho Yang
International Journal of Vehicle Design (IJVD), Vol. 77, No. 3, 2018
Abstract: Exhaust manifold design mainly aims for structural sturdiness by maintaining the appropriate stiffness and low operating temperatures. Maintaining appropriate sealing pressures at the gasket is another key issue in exhaust manifold design to resolve emissions, power, and fuel consumption. This paper describes the design factors affecting the behaviour of an exhaust gasket in an IC engine and shows the way of obtaining a robust design by using finite element analysis (FEA) and the Taguchi method. The behaviour of an exhaust manifold gasket is affected by the interaction with bolt load, vibration, and thermal loads. A reliable approach is suggested in order to develop the methodology for improving the sealing pressure of a manifold by understanding the design factors affecting the sealing pressure losses. It is shown that an adequate sealing pressure distribution along the exhaust manifold ports can be obtained and that a highly efficient, durable sealing gasket joint is possible.
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