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- W2915393949 abstract "This paper gives some guidance to designers on predicting the noise performance of intake and exhaust systems for motor vehicles. Most current silencer design software is based on one-dimensional linear acoustic theory, but a comprehensive development programme is generally still necessary to achieve satisfactory results. To meet the increasing demands of industry, the Ricardo Company is now applying a nonlinear time-domain solution to the problem of intake and exhaust system design, with the additional benefit of being able to predict inherent engine performance and pressure loss. Although the nonlinear model requires more computation, it has three major advantages: (1) it can cope with nonlinear effects such as heat transfer, friction and wave-steepening; (2) it can model the engine quite accurately without the need for experimental measurements; (3) it can predict the pressure loss of the intake and exhaust system and also the engine performance. The results of both linear and nonlinear techniques can be used to predict and synthesise the actual sound that any specific system will make, thus enabling subjective assessment of noise quality and selection of the most desirable sound to be done much earlier in the design/development process. For Part 2 see IRRD 839461. (TRRL)" @default.
- W2915393949 created "2019-03-02" @default.
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- W2915393949 date "1990-10-11" @default.
- W2915393949 modified "2023-09-23" @default.
- W2915393949 title "DESIGNING FOR INTAKE AND EXHAUST NOISE QUALITY. PART 1" @default.
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