Fluid Dynamic 1D Modeling for the Design Optimization of Reed Valve Devices in Secondary Air Injection Applications

Michele Battistoni; Carlo N. Grimaldi

doi:10.4271/2005-24-080

2005-09-11

Fluid Dynamic 1D Modeling for the Design Optimization of Reed Valve Devices in Secondary Air Injection Applications 2005-24-080

Modeling and studies on reed valve devices are topics often dealt with when designing internal combustion engine intake and exhaust systems.

This paper describes an activity about the modeling and the optimization potentiality of an engine equipped with a secondary air injection system by means of a reed valve device.

The first step of the work dealt with the development and tuning of a non-linear Finite Element model of reed valve and with the integration of this model into a one-dimensional fluid-dynamics simulation code. In particular during this phase the potentialities of the method were tested by implementing the FE model both in a 1D University code and in a 1D commercial code (by means of a provided interface for User Defined Elements).

In the second step of the work the simulation results were analyzed for different engine operating points. Comparisons with experimental data are presented for a particular reed configuration, while extrapolations to optimized configurations are discussed analyzing the influence of the involved parameters.

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Fluid Dynamic 1D Modeling for the Design Optimization of Reed Valve Devices in Secondary Air Injection Applications 2005-24-080

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