{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T22:59:26Z","timestamp":1777935566768,"version":"3.51.4"},"reference-count":16,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2012,3,7]],"date-time":"2012-03-07T00:00:00Z","timestamp":1331078400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology"],"published-print":{"date-parts":[[2012,6]]},"abstract":"<jats:p>Environmental awareness, lower consumption of raw materials and longer life of equipment are main concerns nowadays and are leading to the research and development of lubricants and equipment to access those requirements. In this study, the power loss performance of three different tooth profile geometries, developed with the purpose of decreasing power losses while keeping the predicted life, were tested and evaluated in a FZG test rig. The path to reduce power losses was based on the decrease of the module, the increase of the helix angle and increase of the addendum modification coefficients in order to reduce the path of contact, i.e. the sliding velocity. The power loss behaviour of two different lubricants was also evaluated for each tooth profile geometry considered. The influence of the oil level in the gearbox was also evaluated. One of the lubricants has an ester base while the other has a polyalphaolefin base and both are fully formulated. An energetic model was developed for the FZG test gearbox and applied to these tests to improve the knowledge about the influence of tooth geometries as well as lubricant formulation in the power losses and coefficient of friction between gear teeth. The developed geometries showed that the path followed for the reduction of power losses produced the expected results and can be implemented with success on gear design.<\/jats:p>","DOI":"10.1177\/1350650112439260","type":"journal-article","created":{"date-parts":[[2012,3,7]],"date-time":"2012-03-07T21:55:56Z","timestamp":1331157356000},"page":"529-540","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":5,"title":["Comparison of tooth profiles and oil formulation focusing lower power losses"],"prefix":"10.1177","volume":"226","author":[{"given":"Lu\u00eds","family":"Magalh\u00e3es","sequence":"first","affiliation":[{"name":"Instituto Superior de Engenharia do Porto, Insituto Politecnico do Porto, Portugal"}]},{"given":"Ramiro","family":"Martins","sequence":"additional","affiliation":[{"name":"Instituto de Engenharia e Gest\u00e3o Industrial, Portugal"}]},{"given":"Ivo","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Instituto de Engenharia e Gest\u00e3o Industrial, Portugal"}]},{"given":"Jorge","family":"Seabra","sequence":"additional","affiliation":[{"name":"Departamento de Engenharia Mec\u00e2nica, Faculdade de Engenharia da Universidade do Porto, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2012,3,7]]},"reference":[{"issue":"1904","key":"bibr1-1350650112439260","first-page":"1451","author":"Hohn BR","year":"2005","journal-title":"VDI Berichte"},{"issue":"4","key":"bibr2-1350650112439260","first-page":"28","volume":"24","author":"H\u00f6hn BR","year":"2007","journal-title":"Gear Technol"},{"key":"bibr3-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1016\/S0301-679X(03)00047-1"},{"key":"bibr4-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1243\/13506501JET345"},{"key":"bibr5-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1108\/00368790810902223"},{"key":"bibr6-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1016\/j.triboint.2005.03.021"},{"key":"bibr7-1350650112439260","first-page":"759","volume-title":"Tribology research: from model experiment to industrial problem","author":"H\u00f6hn B-R","year":"2001"},{"key":"bibr8-1350650112439260","volume-title":"Thermal rating of gear drives: balance between power loss and heat dissipation.","author":"H\u00f6hn B-R","year":"1996"},{"key":"bibr9-1350650112439260","unstructured":"Niemann G, Winter H, H\u00f6hn B-R. Manuale degli organi delle macchine: metodologie di progettazione, giunzioni, collegamenti a vite, molle, cuscinetti, lubrificazione e usura, alberi, calettamenti e tenute. Milano: Tecniche Nuove, 2006, pp. 1056\u20131056."},{"key":"bibr10-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1115\/1.3179156"},{"key":"bibr11-1350650112439260","unstructured":"Handschuh RF, Zabrajsek AJ. High pressure angle gears: preliminary testing results. NASA\/TM-2010-216251, E-17238, 2010, p.17. Washington, DC: NASA."},{"key":"bibr12-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1016\/j.triboint.2009.10.001"},{"key":"bibr13-1350650112439260","volume-title":"Proceedings of the second international symposium on the performance evaluation of automotive fuels and lubricants","author":"Winter H","year":"1985"},{"key":"bibr14-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1115\/1.3085943"},{"issue":"1665","key":"bibr15-1350650112439260","first-page":"603","volume":"2","author":"Changenet C","year":"2002","journal-title":"VDI Berichte"},{"key":"bibr16-1350650112439260","doi-asserted-by":"publisher","DOI":"10.1115\/1.2403727"}],"container-title":["Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1350650112439260","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/1350650112439260","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1350650112439260","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T03:00:48Z","timestamp":1777690848000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/1350650112439260"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,3,7]]},"references-count":16,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2012,6]]}},"alternative-id":["10.1177\/1350650112439260"],"URL":"https:\/\/doi.org\/10.1177\/1350650112439260","relation":{},"ISSN":["1350-6501","2041-305X"],"issn-type":[{"value":"1350-6501","type":"print"},{"value":"2041-305X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,3,7]]}}}