Sökning: "Particulate matter PM"

Visar resultat 21 - 25 av 59 avhandlingar innehållade orden Particulate matter PM.

1. 21. Water-in-diesel emulsion and microemulsion fuels: composition, structure and effect on emissions

   Författare :Anna Lif; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NOx; microemulsion; combustion; diffusometry; alternative fuels; emission; emulsion; Fischer-Tropsch; MFC; PM; microfibrillated cellulose; NMR; surfactant; soot; diesel;

   Sammanfattning : Water-in-diesel fuels, as emulsions and microemulsions, give reduced emissions of nitrogen oxides (NOx) and particulate matter (PM) in combustion in diesel engines compared to regular diesel. These fuels can contribute to an improved local environment in densely populated areas as they can replace regular diesel in existing vehicles without any engine modification requirements. LÄS MER

3. 22. Characterization of the Combustion of Light Alcohols in CI Engines : Performance, Combustion Characteristics and Emissions

   Författare :Sam Shamun; Förbränningsmotorer; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Methanol; Ethanol; Oxygenated Fuel Blends; Compression Ignition Engine; Partially Premixed Combustion; Combustion Characteristics; Efficiency; Emissions; Particulate Matter; Metanol; Etanl; Oxygenerade Bränsleblandningar; Kompressionsantänd Motor; Partiellt Förblandad Förbränning; Förbränningsegenskaper; Verkningsgrad; Emissioner; Partiklar;

   Sammanfattning : Alternative fuels for combustion engines are becoming increasingly popular as society is pushing to phase out fossil energy to reduce CO2 emissions. The compression ignition (CI) engine has a high overall efficiency which makes it a valuable option for the transport fleet, despite the well known NOx and soot pollutants it emits. LÄS MER

4. 23. Respiratory and cardiovascular effects of exposure to oxidative air pollutants

   Författare :Stefan Barath; Ellinor Ädelroth; Anders Blomberg; E David Newby; M Howard Kipen; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Air Pollution; Particulate Matter; Diesel Exhaust; Ozone; Experimental Exposure studies; Luftföroreningar; Partiklar; Disel avgaser; ozon; Experimentella exponerings studier; Internal medicine; Invärtesmedicin; lungmedicin; Lung Medicine; kardiologi; Cardiology; Environmental Science; miljövetenskap;

   Sammanfattning : Background: The negative effects of air pollution on morbidity and mortality have been known since the mid 20th century. The two most well known examples are the Meuse Valley disaster in the 1930’ies and the London black fog in December 1952. LÄS MER

5. 24. Assessing environmental exposures. Air pollution in Scania, southern Sweden

   Författare :Ralf Rittner; Avdelningen för arbets- och miljömedicin; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; air pollution; dispersion modelling; health impact assessment; emission database; Particulate matter PM ; epidemiology;

   Sammanfattning : Background: The environment where we humans live provides the fundamental requirements we need to survive – food to eat, water to drink, and air to breathe. The quality of these elements has a major impact on human health, as they can contain substances that are detrimental to health. These we call environmental pollutants. LÄS MER

7. 25. Particulate Matter Emissions from Partially Premixed Combustion with Diesel, Gasoline and Ethanol

   Författare :Mengqin Shen; Förbränningsmotorer; []
   Nyckelord :PPC; PM emissions; Diesel; Gasoline; Ethanol; Particle size distribution;

   Sammanfattning : To achieve cleaner combustion and higher efficiency in compression ignition (CI) engines, many new combustion strategies have been developed. Among these new concepts, partially premixed combustion (PPC) attracts a lot of attention, because of its possibility to achieve simultaneously low soot and NOx. LÄS MER