Sökning: "Spark Gap"

Visar resultat 16 - 19 av 19 uppsatser innehållade orden Spark Gap.

  1. 16. Construction and Calibration of a Spark Discharge Generator to Create Mono-disperse Metallic Aerosol Nanoparticles

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Jonathan Pautler; [2012]
    Nyckelord :nanoparticle; nanoparticles; Spark; Discharge; Generator; catalysis; coagulation; high voltage; thermal; evaporation; aerosol; metallic; monodisperse; nano-particles; mono-disperse; Jonathan; Pautler; Jonathan Pautler; Physics and Astronomy;

    Sammanfattning : A Spark Discharge Generator is a versatile device which can be used to generate nanoparticles from any two conducting sources. The device constructed during this thesis project was to make metallic mono-disperse aerosol nanoparticles towards applications in catalysis and nanowire growth. LÄS MER

  3. 17. Gd2O3 nanoparticles fabricated by aerosol technique : “A promising approach for future applications”

    Magister-uppsats, Institutionen för fysik, kemi och biologi

    Författare :Fredrik Backman; [2010]
    Nyckelord :Gd; Aerosol; nanopartikel; Gd2O3;

    Sammanfattning : The purpose of this work was to study the possibility of creating Gd2O3-nanoparticles by spark generation. For this, the Palas GFG 1000 aerosol generator was used with much positive results. LÄS MER

  4. 18. AC Ion Current Interface

    Kandidat-uppsats, Institutionen för ingenjörsvetenskap, fysik och matematik

    Författare :Johan Nilsson; [2009]
    Nyckelord :Ion current; Combustion monitoring;

    Sammanfattning : An effective way to extract combustion parameters from a spark ignited engine is to measure the level of ionization. One way to do this is to use the spark plug as a sensor. Until now this has been achieved by applying a DC voltage over the spark gap which causes an electrical field. LÄS MER

  5. 19. Evaluation of a statistical method to use prior information in the estimation of combustion parameters

    Uppsats för yrkesexamina på grundnivå, Institutionen för systemteknik

    Författare :Patrick Rundin; [2006]
    Nyckelord :bayesian estimation; ion current; air fuel ratio; peak pressure location; SI engine control;

    Sammanfattning : Ion current sensing, where information about the combustion process in an SI-engine is gained by applying a voltage over the spark gap, is currently used to detect and avoid knock and misfire. Several researchers have pointed out that information on peak pressure location and air/fuel ratio can be gained from the ion current and have suggested several ways to estimate these parameters. LÄS MER