Search for dissertations about: "exhaust port"

Showing result 6 - 10 of 22 swedish dissertations containing the words exhaust port.

  2. 6. Acoustic Characterization of Turbochargers and Pipe Terminations

    Author : Heiki Tiikoja; Mats Åbom; Francisco Denia; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acoustical two-port; turbocharger; transmission loss; sound generation; compressor; turbine; IC-engine; inlet system; exhaust system; flow duct; duct termination; reflection coefficient;

    Abstract : In search for quieter engines there is a need for a better understanding of the acoustic properties of engine intake and exhaust system components. Besides mufflers which have the purpose of reducing pressure pulses originating from the internal combustion (IC) engine, there are many components in a modern car exhaust and intake system, e.g. READ MORE

  4. 7. 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

  5. 8. Acoustic modeling and testing of exhaust and intake system components

    Author : Yasser El Nemr; Hans Bodén; Antonio Torregrosa; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Intake and exhaust orifice noise contributes to interior and exterior vehicle noise. The order noise radiated from the orifice of the intake and exhaust systems is caused by the pressure pulses generated by the periodic charging and discharging process and propagates to the open ends of the duct systems. READ MORE

  6. 9. Dynamics of Exhaust Valve Flows and Confined Bluff Body Vortex Shedding

    Author : Marcus Winroth; P. Henrik Alfredsson; Knud Erik Meyer; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Mechanics; Teknisk mekanik;

    Abstract : This thesis can be divided into two interconnected topics; engine exhaust-valve flows and confined bluff-body vortex shedding. When optimising engine flow systems it is common to use low order simulation tools that require empirical inputs, for instance with respect to flow losses across the exhaust valves. READ MORE

  7. 10. Nanoparticles from shipping and road traffic

    Author : Olof Jonathan Westerlund; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nanoparticles; Aerosols; Size distributions; Emissions; Plume processes; Shipping; Road traffic;

    Abstract : In the urban environment road traffic is the dominant source of aerosol particles while in coastal and harbour areas shipping is also a significant source. For shipping there are no direct regulations regarding particle emissions. READ MORE