Évolution des classifications et spécifications des huiles pour moteurs (situation en avril 1989) Evolution of Classifications and Specifications for Motor Oils (Situation April 1989)
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Abstract
Generally speaking, lubricants for engines meet viscosity and service classifications as well as specifications issuing from national or international agencies such as Society of Automotive Engineers (SAE) and American Petroleum Institute (API) in the United States or Comité des Constructeurs d'Automobiles du Marché Commun (CCMC) in Europe. The aim of these classifications and specifications is to qualify products more specifically. At the same time, engine manufacturers are more and more systematically establishing approval standards for oils to better meet the lubrication requirements of their engines so as to improve their mechanical longevity and reliability while making maintenance more logical. Major users such as armed forces or the leading civil administrations have also developed comprehensive specifications to meet their own needs. All these standards define the limits of physicochemical characteristics as well as the minimum performance levels to be reached during testing in engines and laboratory simulators. With the technological development of gasoline and diesel engines together with the appearance of new legislative, economic and ecological constraints (energy conservation, longer times between oil changes, pollution control, etc. ), these specifications have become more and more numerous and more and more complex. Likewise, they are constantly evolving, sometimes at an excessive rate. Despite this, the present article reviews the situation of standards as of the beginning of 1989, analyzes the most important among them, as the case may be, the main phases leading to current specifications and, whenever possible, indicates their foreseeable evolution in the relatively close future.
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j2006evolutionoil
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| Authors | J., Ayel;J., Richard; |
| Journal | oil & gas science and technology |
| Year | 2006 |
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| Keywords | Keywords not found |
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