Sökning: "Maskinteknik"

Visar resultat 1 - 5 av 3904 avhandlingar innehållade ordet Maskinteknik.

  1. 1. The role of piston bowl shape in controlling soot emissions from heavy-duty Diesel engines

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Jan Eismark; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; piston bowl; radial mixing zone; soot oxidation; wave-piston; low swirl; enhanced late-cycle combustion; diesel engine;

    Sammanfattning : The role of piston bowl shape in controlling soot emissions from heavy-duty Diesel engines. Diesel combustion is often subject to a trade-off between emissions of soot and nitrogen oxides (NOx). LÄS MER

  2. 2. On tribological design in gear tooth contacts

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Ellen Bergseth; KTH.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; friction; gear contact; gear manufacturing; surface boundary layers; surface topography; wear;

    Sammanfattning : The correct tribological design will have a considerable effect on a gear’s service life and efficiency. The purpose of this thesis is to clarify the impact of variation in the gear tooth flank tribological system on the gear contact load capacity – to increase the understanding of how surface topography and lubricant interact. LÄS MER

  3. 3. Perceived Quality of Cars. A Novel Framework and Evaluation Methodology

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Kostas Stylidis; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HUMANIORA; HUMANITIES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; luxury; knowledge management; engineering; premium; design; engineering; automotive; product quality; product development; aesthetics; perceived quality;

    Sammanfattning : The supremacy of the automotive manufacturers today is no longer driven by them achieving a superior manufacturing quality but increasingly depends on the customer’s quality perception. Average car consumers see a car’s quality as a fancy mixture of design, aesthetics, their own previous experiences and performance characteristics of the vehicle, unlike a combination of mechanical parts, software pieces, advanced materials, cutting-edge manufacturing processes, with technical knowledge, skills and high production volumes – all ingredients involved in the modern car creation. LÄS MER

  4. 4. Dynamic Equations foe Spherical and Cylindrical Shells Using Power Series Method

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Reza Okhovat; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power series.; surface differential operators; shell equations; eigenfrequency; anisotropy; Spherical shell; cylindrical shell; dynamics;

    Sammanfattning : Shells are commonly used in many branches of engineeringand have therefore beeninvestigated for a number of different types of shells.A shell can be considered as a curved plate having small thickness compared to the other geometrical dimensions as well as to the wavelengths of importance. LÄS MER

  5. 5. Affective Surface Engineering for Product Design

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Martin Bergman; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; semantics; Design research; total appearance; soft metrology; surface roughness; technical functions; core values; product interaction; kansei engineering; emotional functions; hard metrology; sensation and perception;

    Sammanfattning : Design research, sensation and perception, hard metrology, emotional functions, semantics, surface roughness, product interaction, core values, total appearance… the list of scientific phrases never ends. Yet, what do they mean and how shall we use it when we are communicating with the industry and our end users? Is it possible to link the product experience to process parameters, put a number onto it? When you can measure spoken needs or even better, implied needs, of a product, and relate that data to the production, it is possible do create advanced products with high interaction stimuli. LÄS MER