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Permeability measurements of sintered and paper based friction materials for wet clutches and brakes
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.ORCID-id: 0000-0003-3157-4632
2010 (engelsk)Inngår i: SAE technical paper series, ISSN 0148-7191, nr 2010-01-2229, s. 857-864Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Wet clutches are important components used in the transmission and drive trains of many modern vehicles. The clutches transfer torque via the friction between a number of friction discs and the friction characteristics is therefore of great importance for the overall behavior of the vehicles. The friction characteristics is governed by a number of parameters such as lubricant base oil and additives, type and permeability of the friction material and temperature and surface roughness of the interacting surfaces. The permeability is considered to influence time of engagement and supply the sliding interface with lubricant and additives during engagement. In this work, a permeability measurement method suitable for wet clutch friction materials is thus used to measure the permeability of friction materials of different types; sintered bronze and paper based materials. The investigated friction materials come from different vehicle applications such as Limited Slip Differentials and Automatic Transmissions. The investigation also includes measurements made with different types of lubricants such as mineral based lubricants, mineral based VHVI lubricants and ester based lubricants. As comparison similar permeability measurements are made with water since the permeability, according to Darcy's law, should not be influenced by the percolating fluid.

sted, utgiver, år, opplag, sider
2010. nr 2010-01-2229, s. 857-864
Emneord [en]
Engineering mechanics - Fluid mechanics
Emneord [sv]
Teknisk mekanik - Strömningsmekanik
HSV kategori
Forskningsprogram
Maskinelement
Identifikatorer
URN: urn:nbn:se:ltu:diva-16247DOI: 10.4271/2010-01-2229Scopus ID: 2-s2.0-79959509085Lokal ID: fdba49c0-cba9-11df-a707-000ea68e967bOAI: oai:DiVA.org:ltu-16247DiVA, id: diva2:989223
Merknad

Validerad; 2010; Bibliografisk uppgift: Paper id: 2010-01-2229 Även publicerad i SAE International Journal of Fuels and Lubricants, Volume 3, Issue 2, December 2010, Pages 857-864 ; 20100929 (parmar)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2019-03-29bibliografisk kontrollert

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Forlagets fulltekstScopushttp://papers.sae.org/2010-01-2229

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