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Engine Valve Train Wear: Performance of Synthetic and Mineral Oils
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Abstract
Synthetic and mineral base lubricants have been tested in an overhead camshaft (O.H.C.) Daimler Benz diesel engine.
In order to explain the results, the wear of the whole cam lobe (nose and flanks) has been related to the entrainment and sliding velocities, the contact stress and the calculated oil film thickness. A solution to a corrosive wear phenomenon taking place in this Daimler Benz diesel engine has been found.
The base oils evaluation has been extended for the overhead valve (O.H.-V.) Volvo B20 and the O.H.C. Lancia Gamma gasoline engines. The Volvo B20 metallurgy has confirmed to be prone to the pitting damage and this engine has been adopted for the evaluation of the antipitting oil properties. The Lancia Gamma engine has been made suitable for the evaluation of the lubricants efficiency against the adhesive wear phenomenon.
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Miorali, M. and Chiarottino, A., "Engine Valve Train Wear: Performance of Synthetic and Mineral Oils," SAE Technical Paper 811226, 1981, https://doi.org/10.4271/811226.Also In
References
- KANE, E.D. “The future of automotive fuels and lubricants” Automotive Engineering 1980
- WILLIAMSON, E.I. “A survey of the synlubes business” Industrial Lubrication and Tribology, 1,2/ 1981
- LOVE, R.J. WYKES, F.C. “European practise in respect of automotive cams and followers” SAE paper 750865 , 10/- 1975
- “U.S. PASSENGERS CARS” Automotive Industries 1980
- EYRE, T.S. CRAWLEY, B. “Cam-shaft and cam follower materials” Tribology, 8/ 1980
- ABELL, R.F. “I.C. Engine cam and tappet wear experience” SAE paper 770019
- “The scuffing of automotive cams and followers” I.Mech.E.-C.M.E., 5/ 1975
- WOLFF, F. PEYTAVY, B. “Principaux essais moteurs d’usure cames et poussoirs. Comparaison de resultats obtenus sur trois huiles moteurs” Journée d’étude usure des moteurs, 11/ 1979
- ROUNDS, F.G. “Carbon: cause of diesel engine wear?” SAE paper 770829 , 9/ 1977
- IMPARATO, L. BERTI, F. MANCI-NI G. PUSATERI, G. “Use of synthetic lubricants in multigrade motor oils” SAE paper 740118 , 3/ 1974
- CASSIANI INGONI A.A. MIORALI, M. “A simple bench engine test for evaluation of the anti-scuffing properties of automotive engine lubricants” SAE TRANSACTIONS 1978 87
- CZICHOZ, H. “TRIBOLOGY — pag. 45-48” 1979
- MEEUSEN, H.J. “Overhead cam valve train design analysis with digital computer” SAE paper 660350
- DYSON, A. “Elastohydrodynamic lubrication and wear of cams bearing against cylindrical tappets” SAE paper 770018
- “Cams and tappets, performance and materials -Section A 23” TRIBOLOGY HANDBOOK 1973
- HIRANO, F. YAMAMOTO, Y. KAWA-ZOE, T. WATANABE, S. “ The effect of surface roughness on scoring. Part 1 under starved lubrication condition” Bulletin of te J.S.M.E. 21 155 1978
- AL-RUBEYE, H.S. “Friction, wear, and temperature in sliding contact” Paper No. 79-LUB-27-ASME ASLE CONF. 1979
- DYSON, A. “Kinematics and wear patterns of cam and finger follower automotive valve gear” TRIB. International 1980
- HANAOKA, M. FUKUMURA, S. “ A study of valve train noises and method of cam design to reduce the noises” SAE paper 730247
- STEINFUHRER, G. “Calculation of film thickness for variable velocity” Wear 64 1980
- AYEL, J. “Les differentes formes tribologiques d’usure des surfaces metalliques - (deuxiè-me partie)” REV. DE L INST. FRANCAIS DU PETROLE 1976
- NEWLEY, R.A. SPIKES, H.A. PHERSON, P.B. MAC “Oxidative wear in lubricated contact” TRANS. of the ASME Vol 102 1980
- PLESS, L. RODGERS, J.J. “Cam and lifter wear as affected by engine oil ZDP concentration and type” SAE paper 770087
- ROBERTS, D.C. TOURNIER, M.. “Developpement d’une huile don nant un excellente protection contre l’usure des organes de distribution des moteurs a essence et diesel” Journée d’étude usure des moteurs 1979
- A.BALDWIN, B. “The effect of base oil viscosity on simulated valve train wear” ASME/-ASLE LUB. CONF. 1979
- WADDEY, W. PEARCE, A.F. “Effects of motor oil composition on engine wear” SAE paper 690774
- CZICHOZ, H. “ TRIBOLOGY — pag. 119-123”, Ed. Elsevier 1979
- AYEL, J. “Les différentes formes tribologiques d’usure des surfaces métalliques (première partie)” REV. DE L’INST. FRANCAIS DU PETR. 1976
- VINGSBO, O. “Wear and wear mechanisms” WEAR OF MATERIALS 1979
- TORII, K. CHIDA, H. OTSBO, K. TSUSAKA, Y. “Antiwear properties of engine oils- Effects of oil additives on valve train wear” SAE paper 770635
- LECHENAULT, A. “Usure des carries et des culluteurs- Experience acquise sur moteur Citroen G.S.” Journée d’étude usure des moteurs, 11/ 1979
- BAUDRONS, A. CONSTANS, B. “Usure des distributions Renault 14 et Renault 20TS. Influence des lubrifiants” Journée d’étude usure des moteurs 1979
- STOLARSKI, T.A. “A contribution to theory of lubricated wear” WEAR — 59 1980
- ROWE, C.N. “Role of additive adsorption in the mitigation of wear” ASME/ASLE Conf. 1969
- SCHILLING, A. “Automobile engine lubrication (Vol II) pag 7.012 - 7.013” Ed. Scientific Publications (G.B.) 1972