Sökning: "oil consumption"

Visar resultat 11 - 15 av 107 avhandlingar innehållade orden oil consumption.

1. 11. Surface Engineering Approach to Frictional Optimization

   Författare :Staffan Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Piston Ring; Lubrication; Rig testing; Tribometer; Design of Experiments; Cylinder Liner; Friction; Oil consumption; Diesel Engine; Wear;

   Sammanfattning : Reducing emissions is a top priority within heavy duty diesel engine development and research. The power cylinder system is a main contributor to emissions and accounts for about 50% of the total frictional losses found in the engine, so is important to optimize. LÄS MER

3. 12. A Surface Engineering Approach to Reduction of Frictional Losses of Heavy Duty Diesel Engines

   Författare :Staffan Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cylinder Liner; Tribometer; Wear; Diesel Engine; Lubrication; Design of Experiments; Rig testing; Friction; Piston Ring; Oil consumption;

   Sammanfattning : Reducing emissions is a top priority within heavy duty diesel engine development and research. The aim of the work is to decrease the fuel consumption by decreasing frictional losses of the Power Cylinder Unit.Full scale testing of engine components improvements is time-consuming and costly. LÄS MER

4. 13. Automotive Climate Systems - Investigation of Current Energy Use and Future Energy Saving Measures

   Författare :Filip Nielsen; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; simulation and modeling; HVAC; energy efficiency; testing; thermal management; passenger compartment; automotive; Air conditioning; energy consumption; fuel consumption;

   Sammanfattning : Automotive climate systems use energy to achieve thermal comfort for the vehicle passengers. This energy use affects vehicle fuel consumption. The objectives of this thesis are to understand the energy use of automotive climate systems and investigate the effect of different energy saving measures.The research was conducted in several steps. LÄS MER

5. 14. Levels and sources of organophosphorus flame retardants and plasticizers in indoor and outdoor environments

   Författare :Anneli Marklund; Peter Haglund; Barbro Andersson; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; organophosphate esters; OPs; human exposure; air; dust; sewage treatment plants; sludge; oil; snow; deposition; flame retardants; plasticizers; analysis; TCEP; TPP; TCPP; TBP; TBEP; Environmental chemistry; Miljökemi;

   Sammanfattning : Global consumption of organophosphate esters (OPs), which are used as flame retardants and plasticizers, is rapidly increasing. Their use as additives in diverse applications poses a risk as they may be emitted from the products they are added to and be further transported in the environment. LÄS MER

7. 15. The global energy system through a prism of change : The oil & gas industry and the case of the Arctic

   Författare :Maria Morgunova; Vladimir Kutcherov; Pär Blomkvist; Stefan Andreasson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; global energy system; energy industry; oil gas industry; Arctic offshore; change; transformation; sustainable energy transition; industrial dynamics; multi-level perspective; development blocks; globalt energisystem; energibranschen; olje- och gasindustrin; Arctic offshore; förändring; omvandling; hållbar energiövergång; industriell dynamik; flernivå perspektiv; utvecklingsblock; Industriell ekonomi och organisation; Industrial Economics and Management;

   Sammanfattning : The energy industry as a whole and the oil & gas industry in particular is experiencing changes under the influence of a variety of trends and the changing needs of society. Current social, economic, environmental and climate challenges are raising sharp questions for the established principles of energy production and consumption, increasingly arguing for sustainable trajectories in the development of the global energy system. LÄS MER