Sökning: "alternative fuels"

Visar resultat 1 - 5 av 197 avhandlingar innehållade orden alternative fuels.

  1. 1. Environmental Assessment of Emerging Technologies The Case of Alternative Transport Fuels

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Karl Jonasson; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; environmental assessment; life-cycle assessment; LCA; technological systems; technological transitions; socio-technical scenarios; technology path assessment; sustainable development; alternative fuels; biofuels; transport;

    Sammanfattning : There are several methods to evaluate the environmental performance of new technologies. The purpose of this thesis is to contribute to the methodological development of environmental assessments, with contributions from life-cycle assessment (LCA), theories on technical change and socio-technical scenarios. LÄS MER

  2. 2. Injection and Combustion of Alternative Fuels in Spark Ignited Direct Injection Engines

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Lars Christian Riis Johansen; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas fuel; direct injection; E85; stratified combustion; spark ignition; alternative fuels; optical measurements;

    Sammanfattning : Increasingly stringent vehicle emission legislation necessitates increasingly efficient combustion engines. The use of direct injection in spark ignited engines improves engine efficiency and reduces CO2 emissions. LÄS MER

  3. 3. Bränsle för den moderna nationen Etanol och gengas i Sverige under mellankrigstiden och andra världskriget

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Helena Ekerholm; Umeå universitet.; [2012]
    Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; alternative fuels; ethanol; wood gas; energy policy; controversy; history of biofuels; alternative technology; social constructions of technology; socio-technical systems; political debate; socio-technical debate; history of technology; automotive history.; drivmedel; etanol; generatorgas; gengas; drivmedelsalternativ; biodrivmedel; förväntningar; kontrovers; sociotekniska system; sociala konstruktioner av teknik; alternativ teknik; politik; teknikdebatt; energipolitik; mellankrigstiden; andra världskriget; autarki; socioteknisk debatt; automobilhistoria; motorhistoria; historia; History;

    Sammanfattning : This thesis investigate Swedish policy-making concerning promotion of wood gas and ethanol distilled from fermented sulphite lye as domestic fuel alternatives in the Interwar years and World War II. With a departure point in the theories of social constructions of technology (SCOT), the sociology of expectations and Thomas P. LÄS MER

  4. 4. An Experimental Study of Fischer-Tropsch Fuels in a Diesel Engine

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Monica Larsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Alternative Fuels; Fischer-Tropsch; GTL;

    Sammanfattning : Alternative fuels for Diesel engines include ester-based fuels (derived from sources such as rapeseed, soybeans and palm oil), dimethyl ether, and various synthetic fuels. Use of these fuels could contribute to a cleaner environment, reduce global warming and improve the human health by reducing levels of harmful emissions. LÄS MER

  5. 5. Fischer-Tropsch and FAME Fuels as Alternatives for Diesel Engines; an Experimental Study

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Monica Johansson; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Emissions; SME; Fischer-Tropsch; NOx; Combustion; Alternative fuels; Soot; Biodiesel; RME; FAME; GTL; PME;

    Sammanfattning : Research into alternative fuels is necessitated by our heavy reliance on limited oil reserves and increasingly strict emissions legislation. The studies reported in this thesis involved conducting engine tests using alternatives to fossil Diesel fuel in both heavy-duty and light-duty single cylinder engines. LÄS MER