TY - GEN A1 - Skopp, André A1 - Woydt, Mathias A1 - Igartua, A. A1 - Areitioaurtena, O. A1 - Seyfert, C. A1 - Luther, R. T1 - Tribological Performance of Bio-No-Tox Lubricants and New Triboactive Materials for Piston Ring/Cylinder Liner System T2 - 9. Symposium Nachwachsende Rohstoffe für die Chemie; 4th International Green-Tech Conference CY - Potsdam, Germany DA - 2005-02-02 PY - 2005 SN - 3-7843-3372-9 N1 - Serientitel: Schriftenreihe nachwachsende Rohstoffe – Series title: Schriftenreihe nachwachsende Rohstoffe IS - 27 SP - 165 EP - 179 PB - Landwirtschaftsverl. CY - Münster AN - OPUS4-11692 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Woydt, Mathias A1 - Kelling, Norbert A1 - Hartelt, Manfred A1 - Igartua, A. A1 - Areitioaurtena, O. A1 - Seyfert, C. A1 - Luther, R. ED - Bartz, Wilfried J. T1 - Tribological performance of bio-no-tox engine oils and new triboactive materials for piston ring/cylinder liner systems T2 - 15th International colloquium tribology - Automotive and Industrial Lubrication CY - Ostfildern, Germany DA - 2006-01-17 PY - 2006 SN - 3-924813-62-0 SP - Paper 15_E7_Woydt_Bio-no-tox, 1-6 CY - Ostfildern AN - OPUS4-31761 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Igartua, A. A1 - Fernández, X. A1 - Areitioaurtena, O. A1 - Luther, R. A1 - Seyfert, C. A1 - Rausch, J. A1 - Illaramendi, I. A1 - Berg, M. A1 - Schultheiß, H. A1 - Duffau, B. A1 - Plouseau, S. A1 - Woydt, Mathias T1 - Biolubricants and triboreactive materials for automotive applications N2 - The research institution TEKNIKER has coordinated the EUROPEAN Project EREBIO, were different biodegradable lubricants have been formulated by FUCHS and BAM for heavy duty engines (GUASCOR), and passenger cars (RENAULT). In the frame of this article, it has been summarised the results obtained when developing biodegradable passenger car lubricants in combination with triboreactive materials. Replacing hydrocarbon-based oils with biodegradable products is one of the ways to reduce adverse effects on the ecosystem caused by the use of lubricants. The application of low or no sulphur, ash and phosphorous (lowSAP) ester- or polyglycol-based oils, intended for passenger car engine lubricants as substitutes for hydrocarbon-based oils, required the preparation of a composition of lubricants with comparable tribological and functional properties. The study is focussed on passenger car motor oils (PCMO) with reduced metal-organic additives. This is necessary in order to reduce the ash build-up in the after treatment system and therefore improve its efficiency and lifetime. High fuel efficiency and long drain intervals are requested, as well. To follow a line in a consequent way, these oils have to be biodegradable and non-toxic to the aqueous environment according to the directive EC/1999/45, coherent with other international standard. In a modern diesel or gasoline engine, the engine oils has to fulfil quite a number of different functions, such as lubricating and cooling the system, wear protection, soot and particle handling with less deposit tendency and so on. In the paper a study of the biodegradability, toxicity and the tribological properties has been carried out for new developed prototype engine bio-oils. Also, some different plasma sprayed triboreactive coatings have been deposited on cast iron piston rings, being studied also their tribological properties. Finally, the behaviour of the new bio-oils selected and plasma sprayed triboreactive coatings on piston rings have been screened in a real engine. T2 - European Conference on Tribology (ECOTRIB) CY - Ljubljana, Slovenia DA - 2007-06-14 KW - Friction KW - Biolubricant KW - Piston ring KW - Bearing KW - Ester KW - Polyglycol PY - 2009 U6 - https://doi.org/10.1016/j.triboint.2008.10.015 SN - 0301-679X VL - 42 IS - 4 SP - 561 EP - 568 PB - Butterworth-Heinemann CY - Oxford AN - OPUS4-19060 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gili, F. A1 - Igartua, A. A1 - Luther, R. A1 - Woydt, Mathias T1 - The impact of biofuels on engine oil's performance T2 - 17th International colloquium tribology CY - Esslingen, Germany DA - 2010-01-19 KW - Lubricants KW - Engine oil KW - Additives KW - Bio-fuel KW - Ester KW - Polyglycol KW - Thin film coatings KW - Slip-rolling KW - DLC KW - Dilution KW - FAME KW - Jatropha KW - Rape seed KW - Stem valve KW - Piston ring PY - 2010 SP - 17_Woydt_Biofuels_Plenary, 1 EP - 13 AN - OPUS4-24832 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gili, F. A1 - Igartua, A. A1 - Luther, R. A1 - Woydt, Mathias T1 - The impact of biofuels on engine oil performance N2 - The dilution of biogenic fuels into lubricating engine oils often leads to a shortening of the recommended oil drains (between 30% and 60%) and an increase in wear. The large number of overlapping and influencing factors, of which dilution and polymerization of fuel components in the engine oil are emphasised, makes it difficult to find a uniform solution to prevent failures in the various applications. Insofar single solutions for the different types of biofuels are needed. The contribution of base oil chemistry and additives as well as triboactive materials is featured to deal with the adverse effects of biofuels. In the frame of the European Commission (EC)-funded project 'cleanengine', tentative engine oils based on esters with a content of renewables and polyglycols are formulated to increase the lubricant's tolerance in engines fuelled with biofuel-based blends, with the aim of ensuring required lubricating and wear protection performance while keeping oil drain intervals unchanged. The present paper focuses on four-stroke diesel applications, fuelled by biodiesel (fatty acid methyl ester — FAME) as well as by rapeseed oil and Jatropha oil (pure vegetable oils, triglycerides), together with relevant blends of those biofuels and conventional diesel fuel. This paper screens the functional profile (in particular rheological, toxicological, bio-compatibility, tribological and biofuels affinity) of lube families with respect to biofuel contamination. Moreover, this is followed by the contributions of piston ring and liner materials as well as thin film coatings. KW - Lubricants KW - Engine oil KW - Additives KW - Biofuel KW - Ester KW - Polyglycol KW - Thin film coatings KW - Slip-rolling KW - DLC KW - Dilution KW - FAME KW - Jatropha KW - Rapeseed KW - Stem valve KW - Piston ring PY - 2011 U6 - https://doi.org/10.1002/ls.158 SN - 0954-0075 SN - 1557-6833 VL - 23 IS - 7 SP - 313 EP - 330 PB - Leaf Coppin Publ. Ltd. CY - Deal AN - OPUS4-24831 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CHAP A1 - Igartua, A. A1 - Fernandez, X. A1 - Woydt, Mathias A1 - Luther, R. A1 - Illarramendi, I. ED - Lakshminarayanan, P.A. ED - Nayak, N.S. T1 - Tribological tests to simulate wear on piston rings N2 - In order to reduce experimental effort, tribological tests are performed for coating selection, simulating the friction, wear and scuffing behaviour between the piston ring and cylinder liner, as well as lubricant evaluation. The creation of test standards in piston ring/cylinder liner simulation is discussed. PVD coatings, HVOF coatings and nitriding treatments have been applied to piston rings as alternative for chromium coatings. CrN/TiN coating seems very effective for increasing the wear and scuffing resistance. Biodegradable engine oils based on esters and polyglycols reduce friction and exceed the wear resistance of reference engine oils based on hydrocarbons for the new generation engines with high cylinder pressures. KW - Friction KW - HVOF KW - Chromium KW - CrN/TiN KW - Scuffing KW - Wear KW - Resistance KW - Tribo-system KW - Piston ring KW - Cylinder liner KW - SRV Test KW - Schwingung KW - Reibung KW - Verschleiß KW - Oscillation KW - Friction and Wear KW - Extreme pressure test KW - Coating KW - Physical vapour deposited coating (PVD) KW - High Pressure–High Velocity Oxi-fuel coating (HP-HVOF) KW - Friction coefficient KW - Wear scar KW - Lubricant KW - Bio-degradable lubricant KW - Ester KW - Glycol KW - Viscosity index KW - Viscosity grade KW - Thematic piston ring PY - 2011 SN - 978-0-470-82882-3 U6 - https://doi.org/10.1002/9780470828847.ch11 IS - Chapter 11 SP - 167 EP - 195 PB - John Wiley & Sons AN - OPUS4-26253 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Igartua, A. A1 - Fdez-Pérez, X. A1 - Illarramendi, I. A1 - Luther, R. A1 - Rausch, J. A1 - Woydt, Mathias ED - Carmo, J. P. ED - Ribeiro, J. E. T1 - Biolubricants and triboreactive materials for automotive applications N2 - The text deals with passenger car motor oils (PCMO) with reduced metal-organic additives. KW - Biolubricants KW - Passenger car motor oils (PCMO) KW - Automotive KW - Tribology PY - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-464317 SN - 978-9-53510-698-2 SP - 119 EP - 146 PB - INTECH CY - Rijeka, Croatia AN - OPUS4-46431 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -