Sökning: "running gear"

Visar resultat 1 - 5 av 26 avhandlingar innehållade orden running gear.

1. 1. On the running-in of gears

   Författare :Sören Sjöberg; Ulf Olofsson; Anders Flodin; KTH; []
   Nyckelord :gears; gear manufacturing; running-in; surface topography; contact area ratio; manganese phosphate; Mechanical engineering; Maskinteknik;

   Sammanfattning : The general trend in gear industry, today, is an increased focus on gear transmission efficiency. Gear transmission efficiency losses arise from loaded and unloaded gear contacts, seals, lubricant and bearings. One way of minimising the losses is to lower the lubricant viscosity. This will reduce the speed dependent losses. LÄS MER

3. 2. Influence of running-in on gear efficiency

   Författare :Sören Sjöberg; Ulf Olofsson; Björklund Stefan; Lehtovaara Arto; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gears; gear manufacturing; running-in; efficiency; friction; surface topography; Machine Design; Maskinkonstruktion;

   Sammanfattning : The general trend in gear industry is an increased focus on gear transmission efficiency. This thesis focuses on the understanding of how different gear manufacturing methods – particularly the contribution of the running-in process – affect the surface characteristics and friction response, with the purpose of increasing gearbox efficiency. LÄS MER

4. 3. Running-in of gears - surface and efficiency transformation

   Författare :Mario Sosa; Ulf Olofsson; Stefan Björklund; Ulf Sellgren; Jorge Seabra; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; running-in; surface transformation; efficiency; gears; ground; superfinished; Machine Design; Maskinkonstruktion;

   Sammanfattning : With ever shorter development times and market demands on overall system performance such as efficiency, reliability and low maintenance, accurate predictive tools are necessary and gear drives prove to be no exception. All these characteristics have an impact on a process which has remained a riddle: running-in. LÄS MER

5. 4. An experimental investigation of spur gear efficiency and temperature : A comparison between ground and superfinished surfaces

   Författare :Martin Andersson; Ulf Olofsson; Bengt-Göran Rosén; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gears; ground; superfinished; efficiency; temperature; running-in; dip lubrication; spray lubrication; Machine Design; Maskinkonstruktion;

   Sammanfattning : This thesis focuses on reliability when testing gear efficiency and on how gear mesh efficiency can be increased without detrimental effects on the gears. Test equipment commonly used in gear research was analysed to identify important parameters for gear efficiency testing. LÄS MER

7. 5. Surface Integrity Characterization of Gears with respect to Running-in

   Författare :Dinesh Mallipeddi; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; micropitting; surface asperities; running-in; surface roughness; residual stresses; Gears; surface chemistry;

   Sammanfattning : A gearbox with gears of different sizes is part of a vehicle transmission system that plays an important part in transmitting the engine power to the wheels. The efficient energy transmission highly relies on the performance of gears. Together, the mesh efficiency and durability determines the gear performance. LÄS MER