Acoustic design of mining exhaust mufflers

This project applies computer models to optimise the design of mufflers used to lower noise from engine exhaust systems.

Infrastructure, utilities & transport



6 months

Academic team

Associate Professor Ray Kirby


Engagement model


Innovation Connections

Hushpak Pty Ltd

Future applications

Large mining vehicles

Large vehicles with engines over 20L

Locomotives, esp freight applications


Noise emitted by the exhausts of large internal combustion engines can cause significant environmental pollution. Hushpak wanted to improve the acoustic design of their exhaust mufflers to enable clients to reduce noise levels and meet EPA standards.



The UTS Tech Lab team developed computational software, using state-of-the-art modelling techniques, to optimise the design of Hushpak’s mufflers. A new, quieter design was tested on a mining truck and found to significantly outperform previous designs. Hushpak now use this software to create all their mufflers and are working with the Tech Lab team to expand their business into other large engine applications.