Search for dissertations about: "ic engine thesis"

Showing result 1 - 5 of 31 swedish dissertations containing the words ic engine thesis.

  1. 1. Modelling of IC-Engine Intake Noise

    University dissertation from Stockholm : KTH

    Author : Magnus Knutsson; KTH.; [2009]
    Keywords : IC-engine; intake noise; gas dynamics; linear source data; frequency domain; 2-port; losses; air cleaner unit; filter paper; flow; FEM; BEM; charge air cooler; narrow tube; TECHNOLOGY Engineering physics Acoustics; TEKNIKVETENSKAP Teknisk fysik Akustik;

    Abstract : Shorter product development cycles, densely packed engine compartments and intensified noiselegislation increase the need for accurate predictions of IC-engine air intake noise at earlystages. The urgent focus on the increasing CO2 emissions and the efficiency of IC-engines, aswell as new techniques such as homogeneous charge compression ignition (HCCI) mightworsen the noise situation. READ MORE

  2. 2. Homogeneous Ignition - Chemical Kinetic Studies for IC-Engine Applications

    University dissertation from Combustion Physics, Box 118, S-221 00 Lund

    Author : Per Amnéus; Lunds universitet.; Lund University.; [2002]
    Keywords : Mechanism reduction; Skeletal mechanism; n-heptane; iso-octane; formaldehyde; methane; Motors and propulsion systems; Motorer; framdrivningssystem; Physics; Fysik; Detailed chemistry; Kinetic calculations; Engine knock; Homogeneous charge compression ignition; HCCI; Fysicumarkivet A:2002:Amnéus; Fysik; Physics;

    Abstract : Calculations on a Homogeneous Charge Compression Ignition (HCCI) engine have been performed. Zero-dimensional models were used. The simplest model compressed the gas to auto-ignition, using temperature and pressure at a certain crank angle position obtained from engine experiments. READ MORE

  3. 3. Computational Analysis of Heat Transfer and Fluid Flow with Relevance for IC-Engine Cooling

    University dissertation from KFS AB, Lund

    Author : Sassan Etemad; Lunds universitet.; Lund University.; [2005]
    Keywords : termodynamik; Termisk teknik; turbulence models; Heat transfer; curved duct; secondary flow; IC-engine cooling; Gases; Thermal engineering; applied thermodynamics; Teknik; Technological sciences; plasma; Gaser; fluiddynamik; plasmas; fluid dynamics; Fysik; Physics; TEKNIKVETENSKAP; TECHNOLOGY;

    Abstract : Modern IC-engines produce more power per displaced volume and operate at higher combustion pressures and temperatures. In addition, engine structure materials such as aluminium and magnesium alloys, which are more sensitive to thermal loads, are more commonly used. READ MORE

  4. 4. IC-engine intake noise predictions based on linear acoustics

    University dissertation from Stockholm : KTH

    Author : Magnus Knutsson; KTH.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Engineering physics Acoustics; TEKNIKVETENSKAP Teknisk fysik Akustik;

    Abstract : Shorter product development cycles, densely packed engine compartments and intensified noise legislation increase the need for accurate predictions of IC-engine air intake noise at early stages. The urgent focus on the increasing CO2 emissions and the efficiency of IC-engines, as well as new techniques such as homogeneous charge compression ignition (HCCI) might worsen the noise situation. READ MORE

  5. 5. Characterization of the Homogeneous Charge Compression Ignition Combustion Process

    University dissertation from Division of Combustion Engines, Lund Institute of Technology, Box 118, 2210 00 Lund, Sweden

    Author : Anders Hultqvist; Lunds universitet.; Lund University.; [2002]
    Keywords : Motors and propulsion systems; akustik; Motorer; framdrivningssystem; Termisk teknik; termodynamik; Thermal engineering; applied thermodynamics; vakuumteknik; hydraulik; Maskinteknik; vibration and acoustic engineering; hydraulics; vacuum technology; ATAC; Mechanical engineering; MK; CAI; TS; MULDIC; PREDIC; HCCI; fuel tracer; combustion; injection; direct; port; engine; LDV; LIF; PLIF; vibrationer; TEKNIKVETENSKAP; TECHNOLOGY;

    Abstract : The main objective of this project was to characterize the HCCI combustion process. Central parts in the project were the progress of the HCCI combustion process, the influence of charge homogeneity on the combustion process and sources of UHC and CO emissions in HCCI combustion. READ MORE