Sökning: "cold start"

Visar resultat 1 - 5 av 48 avhandlingar innehållade orden cold start.

  1. 1. The efficient ethanol engine with cold start capability

    Författare :Jonas Wärnberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Piezo-actuated outward-opening direct injection; SI engine; Two-stage-turbo charging; Ethanol; Stratified Direct Injection; Cold start;

    Sammanfattning : In light of the world’s growing demand for personal transportation and the decreasing availability of fossil fuels, alternative fuels must be evaluated. Ethanol is a renewable fuel whose adoption could help to reduce the burden of anthropogenic activity on the environment. LÄS MER

  3. 2. Hollow cone gasoline/ethanol sprays under cold start conditions

    Författare :Jonas Wärnberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SIDI; Cold start; PIV; Piezo-injector; PDA; Ethanol; SI; SGDI; E85; Direct injection stratified charge; LIF; Spark ignition; Mie;

    Sammanfattning : To decrease the release of CO2 from fossil fuels into the atmosphere, within the transportation sector the efficiency of vehicles and their engines must be increased. Additionally renewable fuels may be used to further decrease our reliance on fossil fuels. LÄS MER

  4. 3. Cold Load Pick-up

    Författare :Evert Agneholm; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cold load pick-up; load modelling; field measurements; blackout; power system restoration;

    Sammanfattning : The load behaviour of the industrial and residential sector following different types of outages is dealt with in this dissertation. Data on the power consumption after these outages have been used for deriving models of the cold load pick-up. LÄS MER

  5. 4. Development of high temperature SiC based field effect sensors for internal combustion engine exhaust gas monitoring

    Författare :Helena Wingbrant; Anita Lloyd-Spetz; Karin Larsson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; field effect sensor; gas detection; selective catalytic reduction; lambda; cold start; ammonia; silicon carbide; engine exhaust.; Physics; Fysik;

    Sammanfattning : While the car fleet becomes increasingly larger it is important to lower the amounts of pollutants from each individual diesel or gasoline engine to almost zero levels. The pollutants from these engines predominantly originate from high NOx emissions and particulates, in the case when diesel is utilized, and emissions at cold start from gasoline engines. LÄS MER

  7. 5. Studies of MISiC-FET sensors for car exhaust gas monitoring

    Författare :Helena Wingbrant; Anita Lloyd Spetz; Martin Eickhoff; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; field effect sensor; gas detection; selective catalytic reduction; lambda; cold start; ammonia; silicon carbide; engine exhaust; Physics; Fysik;

    Sammanfattning : The increasing size of the car fleet makes it important to find ways of lowering the amounts of pollutants from each individual diesel or gasoline engine to almost zero levels. The pollutants from these engines predominantly originate from emissions at cold start, in the case when gasoline is utilized, and high NOx emissions and particulates from diesel engines. LÄS MER