Essays about: "muffler"

Showing result 6 - 10 of 10 essays containing the word muffler.

  1. 6. A framework for designing a modular muffler system by global optimization

    University essay from KTH/Optimeringslära och systemteori

    Author : Fredrik Frithiof; [2015]
    Keywords : Muffler Optimization; Four-pole Method; Transfer Matrix Method TMM ; Global Search; MultiStart; Genetic Algorithm; Pattern Search; Simulated Annealing; Ljuddämparoptimering; 4-polsmetoden; Transfer Matrix Method TMM ; Global Search; MultiStart; Genetic Algorithm; Pattern Search; Simulated Annealing;

    Abstract : When creating a muffler to be installed on a noise generating machine, the design parameters as well as the placements of sound attenuating elements has to be optimized in order to minimize the sound coming out of the equipage. This is exemplified in a small project task for students of a basic course in optimization at KTH. READ MORE

  3. 7. Analytical and Numerical Analysis of the Acoustics of Shallow Flow Reversal Chambers

    University essay from KTH/MWL Marcus Wallenberg Laboratoriet

    Author : Alireza Qazizadeh; [2012]
    Keywords : ;

    Abstract : Flow reversal chambers are mainly used to accomplish a compact silencer design needed on a vehicle. Generally in this configuration the inlet and outlet ports are on the same face and the flow direction is reversed. READ MORE

  4. 8. Analysis and design of a semi-active muffler

    University essay from KTH/MWL Marcus Wallenberg Laboratoriet

    Author : Petter Svanberg; [2012]
    Keywords : ;

    Abstract : In this work, a flow reversal resonator fitted with a short-circuit duct connecting the inlet and outlet is analysed and used as a tuneable muffler element, aimed to be used use in a semi-active muffler on an IC-engine. The work done can be divided into 3 main parts. READ MORE

  5. 9. Acoustics of parallel baffles muffler with Micro-perforated panels

    University essay from KTH/MWL Marcus Wallenberg Laboratoriet

    Author : Su Xiaowan; [2011]
    Keywords : ;

    Abstract : Micro-perforated panels (MPP) have a good acoustic damping performance and a potential to be used in mufflers [1, 2]. This thesis aims to investigate the acoustic performance of a parallel baffles muffler, which consists of MPP baffles. The work is both experimental and numerical, i.e. READ MORE

  6. 10. Analysis and mathematical modelling of industrial truck silencers

    University essay from Matematiska och systemtekniska institutionen

    Author : Bjorn Nordle; Marcus Johansson; [2007]
    Keywords : Kalmar Industries; muffler; SIDLAB; forklift; industrial truck; silencer; sound analysis; modelling of sound in ducts.;

    Abstract : The currently low requirements on sound emissions for industrial trucks are expected to be raised in the near future. The company Kalmar Industries AB, which develop, produce and market industrial trucks, want to improve their truck silencers as a precaution to the future harder restrictions and also to improve their competitiveness. READ MORE