BEM Modeling of Mufflers with Diesel Particulate Filters and Catalytic Converters University of Kentucky

Format:

Conference/Event

Author/Creator:

Jiang, C., author.

Conference Name:

SAE 2009 Noise and Vibration Conference and Exhibition (2009-05-19 : St. Charles, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2009

Summary:

In this paper, the transmission loss (TL) of mufflers with a built-in catalytic converter (CC) and/or a diesel particulate filter (DPF) is predicted using the boundary element method (BEM) by either modeling the CC or DPF as a block of bulk-reacting material or by using the "element-to-element four-pole connection" between two BEM substructures. The four-pole parameters of the CC or DPF can be obtained by a measurement procedure that involves using the two-source method on a test rig with a pair of transition cones followed by a few 1-D four-pole matrix inverse operations to extract the parameters. A 3-D BEM based optimization may be further applied to fine-tune the extracted four-pole parameters. To use the bulk-reacting material modeling in BEM, the four-pole parameters will have to be converted into an equivalent set of bulk-reacting material properties. Test cases including a muffler with a series connection of CC and DPF are presented in this paper. The BEM predictions are compared to available experimental results

Notes:

Vendor supplied data

Publisher Number:

2009-01-2225

Access Restriction:

Restricted for use by site license