Minimised gear lubrication by a minimum oil/air flow rate |
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| Authors: | B-R Höhn K Michaelis H-P Otto |
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| Affiliation: | 1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, PR China;2. School of UG, Yancheng Institute of Technology, 224051 Yancheng, PR China;1. Politecnico di Milano, dipartimento di meccanica, via La Masa 1, 20156 Milano, Italy;2. FZG, Gear Research Center, Technical University of Munich, Boltzmannstraße 15, D-85748 Garching bei München, Germany;1. School of Marine Science and Technology, Northwestern Polytechnical University, Xi''an 710072, People''s Republic of China;2. Laboratory for Unmanned Underwater Vehicle, Northwestern Polytechnical University, Xi''an 710072, People''s Republic of China;3. College of Mechanical Engineering, Chongqing University, Chongqing 400030, People''s Republic of China |
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| Abstract: | The objectives of the research project were to investigate the limits concerning possible reduction of lubricant quantity in gears without detrimental influence on the load carrying capacity.The investigations covered the influence of the oil level in dip-lubricated systems as well as the oil flow rate in spray-lubricated systems namely oil/air supply systems on power loss, heat generation and load carrying capacity. The load carrying capacity in terms of characteristic gear failure modes was determined and was compared to the results using conventional and reduced lubricant volumes with dip lubrication.Therefore in back-to-back gear tests the parameters speed, load and oil quantity were varied for examination of the four main gear flank damages: scuffing, wear, pitting and micro-pitting. The investigations showed the application potential of oil/air lubrication also for heavy duty transmissions nevertheless there exists a natural limitation for lowering the oil quantity in transmissions without detrimental influence on the load carrying capacity. |
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