Essays about: "HCCI-engine"

Showing result 1 - 5 of 9 essays containing the word HCCI-engine.

  1. 1. Thermometry using OH laser-induced fluorescence excitation spectra: A feasibility study

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Matematisk fysik

    Author : Elin Malmqvist; [2013]
    Keywords : laser-induced fluorescence; LIF; temperature; temperature measurements; OH; Physics and Astronomy;

    Abstract : In this thesis, rotational spectra, acquired through laser-induced fluorescence (LIF) on the OH-radical, were used to evaluate temperatures in different combustion environments. By comparing experimental spectra with theoretical ones of known temperature, the temperature can be determined. READ MORE

  3. 2. Development of a fuel injection system for an opposed piston two stroke HCCI engine

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Michael Boyd; [2012]
    Keywords : ;

    Abstract : HCCI combustion engines can provide high fuel efficiencies with low NOx emissions compared to SI and CI engines due to their lean combustion, high compression ratios and low combustion temperatures. The disadvantage of HCCI is that it is inherently difficult to control. READ MORE

  4. 3. Development of an HCCI index

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : Filippa Olsson; Tove Vang; [2009]
    Keywords : HCCI index; fuel index; combustion in fuels; Technology and Engineering;

    Abstract : New models of combustion engines have gained a great interest within research in the last decade. This interest has arisen due to the possibility to achieve a higher degree of efficiency and lower emissions, which will impact the environment positively. A higher degree of efficiency implicates an economical benefit in terms of fuel. READ MORE

  5. 4. HCCI Engine Modeling and Control using Conservation Principles

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Daniel Blom; [2007]
    Keywords : Technology and Engineering;

    Abstract : The aim of the thesis is to model engine physics and dynamics and to design controllers based on the physical model. By implementing equations and solving them it's possible to describe the major phenomena in a four stroke engine running in HCCI mode. To describe the cycle-tocycle connection in the model a wall temperature model was introduced. READ MORE

  6. 5. The Performance of a Dual Fuel HCCI Engine

    University essay from Lunds universitet/Institutionen för energivetenskaper

    Author : Rafael Vargas Munoz; [2006]
    Keywords : Combustion timing; ignition temperature; emission; efficiency; fuel comsumption; Technological sciences; Teknik; Technology and Engineering;

    Abstract : The HCCI engine has shown great qualities such as high efficiency combined with low emissions. However, many issues have not totally been solved yet. One way to control the combustion timing, one of the commented issues, is dual fuel utilizing the difference in ignition temperature between different fuels. READ MORE