Sökning: "Maskinelement"
Visar resultat 21 - 25 av 169 avhandlingar innehållade ordet Maskinelement.
21. Tribological Behaviour of Pb-free Engine Bearing Materials
Sammanfattning : Engine bearings are amongst the most critical components of an internal combustion engine that support and allow smooth rotation of the crankshaft. They are designed to operate under hydrodynamic lubrication condition where the bearing and shaft surface are separated by a thick lubricant film. LÄS MER
22. Tribological characteristics of some multi-layered Pb-free engine bearing materials
Sammanfattning : Lead (Pb) containing alloys such as white metals and Cu-Pb-Sn (lining) with Pb-based overlay plating have been extensively used as materials for internal combustion engine bearings during the last several decades. However, owing to environmental and health concerns, the use of Pb containing materials in automotive engine components is being restricted. LÄS MER
23. On the hydrodynamic lubrication in tilting pad thrust bearings
Sammanfattning : The primarily objective of this work was to investigate the performance of environmentally adapted synthetic oils in the hydrodynamic lubrication regime. A special test facility has been designed and manufactured for this purpose. The facility contains two equalising tilting pad thrust bearings typical of design in general use. LÄS MER
24. Polymeric Materials for Bearing Applications : Tribological Studies in Lubricated Conditions
Sammanfattning : One of the most important demands in hydropower and other industries today stems from the emphasis on preserving the environment. Usage of mineral and synthetic oils in sliding bearings of hydropower plants raises concerns about the environmental impact of these lubricants in case of spillage into downstream water. LÄS MER
25. Tribological behaviour of polymers in lubricated contacts
Sammanfattning : An important issue in hydropower and other industries is the increasing demand for introduction of environment friendly solutions. Mineral oil based lubricants have long been used in various sliding bearings in hydropower stations. LÄS MER