Abstract
To increase development efficiency, the authors developed an engine noise and vibration development process that uses a hierarchical desktop engineering tool and knowledge base in the early phase of design. The aim of this process is to raise the maturity level of the initial model of large scale 3D simulation in advance and thereby reduce the time and effort involved in multi-objective optimization at later stages. This process can discuss four engine noise and vibration phenomena. Those phenomena are investigated using large scale 3D simulation at the detailed design phase. As a preliminary step to that phase, an initial design process was added in which specifications of main engine components are investigated using three types of simple desktop engineering tool (conceptual parts design review, 1D/2D simulation, and light 3D simulation). In addition, the database accumulated in past developments and benchmark tests makes it possible to judge whether the specifications of component provide the required noise and vibration performance even when there is no assembly model at the initial design phase.
