Along with an increase in the output of engines, the components in the intake and exhaust systems, such as turbochargers, air coolers, and piping, have become larger, and the intake and exhaust system assemblies have been in many cases mounted overhanging the engine main body as a result. In addition, the increase in the number of parts and couplings in the assembly makes the evaluation of strength against vibration more complicated, so that the accuracy of the analysis is required to be improved. Therefore, in order to establish methods to improve the accuracy of vibration analysis of gas engine intake and exhaust system assemblies, we have clarified processes that are effective in improving the accuracy of the analysis.
