Exhaust System Evaluation and Design by Non-Linear Modeling

Paper #:
  • 920686

Published:
  • 1992-02-01
Citation:
Sapsford, S., Richards, V., Amlee, D., Morel, T. et al., "Exhaust System Evaluation and Design by Non-Linear Modeling," SAE Technical Paper 920686, 1992, https://doi.org/10.4271/920686.
Pages:
14
Abstract:
This paper describes the application of the Ricardo non-linear, one-dimensional engine performance simulation program, WAVE, to the problem of exhaust system design for the Chrysler 3.5 liter V6 24 valve engine. This computer-based analysis offers substantially reduced lead times over the ‘build and test’ methods traditionally employed. Furthermore, because tailpipe noise, engine performance and pressure loss are all predicted at the design stage, a more complete solution can be found. Comparisons between measured and predicted results are shown in this paper and the value of many alternative design changes are assessed. Digital sound synthesis techniques developed at Ricardo have also been used to assess the effect of design changes on the perceived sound. Based on this analysis recommendations were made to improve the exhaust system design and the paper concludes with a discussion of the implementation of these changes by Chrysler and Walker Manufacturing, the system supplier.
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