Search for dissertations about: "car exhaust"

Showing result 11 - 15 of 34 swedish dissertations containing the words car exhaust.

  2. 11. Numerical Computations of Internal Combustion Engine related Transonic and Unsteady Flows

    Author : Olle Bodin; Laszlo Fuchs; Daniel Lörstad; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LES; Transonic flow; Hysteresis; Shock boundary-layer interaction; Exhaust valve; Fluid mechanics; Strömningsmekanik;

    Abstract : Vehicles with internal combustion (IC) engines fueled by hydrocarbon compounds have been used for more than 100 years for ground transportation. During the years and in particular in the last decade, the environmental aspects of IC engines have become a major political and research topic. READ MORE

  4. 12. Studies of flow duct acoustics with applications to turbocharged engines

    Author : Hans Rämmal; Hans Boden; Mats Åbom; Antonio Torregrosa; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; IC-engine; turbocharger; duct termination; flow duct; exhaust system; inlet system; acoustic source; one-port; two-port; source model; transmission loss; two-port matrix; reflection coefficient; source strength; multi-load method; Acoustics; Akustik;

    Abstract : A number of experimental and theoretical studies, performed in the field of technical flow duct acoustics are presented in this thesis. The acoustical methods treated are implemented on turbocharged IC-engines and engine gas exchange system components. A new method based on the well-known two-load technique has been developed. READ MORE

  5. 13. A Framework for Analyzing the Operative Performance of Sequential Module Flows

    Author : Peter Fredriksson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; operative performance; module assembly units; sequential module flows; unit of analysis; output criteria; car industry;

    Abstract : This thesis deals with sequential module flows (SMFs) and their operative performance. In brief, an SMF denotes the preassembly of components into product modules, which are delivered to a final assembly line in the same sequence as product variants are assembled. READ MORE

  6. 14. Acoustic modelling and testing of advanced exhaust system components for automotive engines

    Author : Sabry Allam; Hand Bodén; Antonio Torregrosa; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; acoustic modelling; testing; two-port; diesel particulate filter; after treatment device; Teoretisk fysik; Physics; Fysik;

    Abstract : The increased use of the diesel engine in the passenger car, truck and bus market is due to high efficiency and lower fuel costs. This growing market share has brought with it several environmental issues for instance soot particle emission. READ MORE

  7. 15. On the Relations between Driving Patterns, Exhaust Emissions and Network Characteristics in Urban Driving

    Author : Lena Smidfelt-Rosqvist; Trafik och väg; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; traffic calming; intersections; driving adaptation; speed limits; Road transport technology; driving behaviour; Vägtransportteknik; overall effects; trip-long; non-local effects;

    Abstract : The planning and design of street networks in cities influence driving behaviour and give rise to variations in driving patterns (i.e., speed and acceleration profiles) that affect exhaust emissions and fuel consumption. READ MORE