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Introduction to Lubrication

  • Engineers and technical staff of the automotive and mechanical industry confronted with lubrication problems and desiring to acquire basic knowledge on the principles of lubrication and on lubricants.
  • To bring information on the mode of action of lubricants in internal combustion engines and other mechanical organs.
  • To bring information on the rheological behavior of lubricants in internal combustion engines, on the different lubricating regimes and their mechanisms of generation according to the functioning parameters.
  • To bring information of the wear mechanisms of the materials and on the methods for wear control.
  • To allow a better understanding on the functioning and the mode of action of a lubricant in an engine.
Learning Objectives
  • To provide participants with a basic training on lubrication and the properties of lubricants used in thermal engines and other mechanical units.
  • Upon completion of the training, participants will know:
  • the different lubrication types (tribology)
  • the different wear types and the appearance of such wears
  • the lubricants flow properties (rheology)
  • all the properties required for engine lubricants
  • the lubricants classification principles and specifications.
  • They are able to understand the possible origins of a lubrication problem and the consequences of the choice of a lubricant. They are also able to ask the good questions to the field specialists.

Classifications and specifications of lubricants 1 day
  • Lubricants rheology: the different types of flow behavior (Newtonian, non Newtonian, Bingham fluid, Maxwell fluid, thixotropic), variation of viscosity with temperature, pressure, deformation, measuring methods of the rheological properties, viscosity classifications of automotive and industrial lubricants.
  • Service specifications of engine lubricants: API, ACEA, ILSAC, engine testing for performance evaluation
Elements of tribology 1 day
  • Friction laws.
  • Study of the different lubricating regimes (hydrodynamic, hydrostatic, elastohydrodynamic, boundary, mixed, squeeze film) and their mechanism of generation. Stribeck curve. Sommerfeld number.
  • Study of the different forms of wear, their mechanism, the way to fight against them (abrasive, corrosive, fatigue, contact corrosion, cavitation wear).
  • Relationship between wear and tribology parameters.
Functional properties of lubricants and composition 1 day
  • Functional properties of lubricants according to the equipment lubricated. Effect of the properties and the utilization of the equipment.
  • Lubricants composition:
  • Base stocks mineral and synthetic, composition, compared performances.
  • Additives: the different types, their roles and their mode of action (detergents, dispersants, antioxidants, viscosity modifiers, pour point depressants, extreme-pressure, anti-wear, friction modifiers, rust and corrosion inhibitors, antifoaming agents).
  • Notions on the formulation of lubricants.