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Lubrication

Lubrication. Lubrication: The process of reducing friction between moving surfaces. Friction: Resistance created when one surface rubs on another Slows movement of parts Generates heat Increases wear Events: particles - expansion - seizure. Lubrication. Forms of lubricants

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Lubrication

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  1. Lubrication • Lubrication: • The process of reducing friction between moving surfaces • Friction: • Resistance created • when one surface • rubs on another • Slows movement of parts • Generates heat • Increases wear • Events: particles - expansion - seizure

  2. Lubrication • Forms of lubricants • Dry (powder) • Semi dry (grease) • Viscous (oil) • Function of engine oil • Lubricate • Clean • Cool • Cushion • Seal

  3. Lubrication • SAE Society of Automotive Engineers • Viscosity The ability of liquid to resist flowing • SAE Index / Viscosity Index • Listing of viscosities • Examples of viscosities (weights) • 10w 20w 30w 40w 50w 60w 80-90w • 5w30 10w30 10w40 20w50

  4. Lubrication • SAE Viscosity / Grade 5W30 and 30

  5. Lubrication • SAE Viscosity / Grade 5W30 and 10W30

  6. LUBRICATION • A.P.I. • American Petroleum Institute • Service index • List of ratings determining oil application (SJ) • Service manual / oil application / climate • Oil additives improve oil performance • Detergents • Anti-rust / Anti-corrosion • Oxidation inhibitors • Anti-foam • Dispersant

  7. LUBRICATION • A.P.I. American Petroleum Institute • Service index • List of ratings determining oil application (SJ)

  8. LUBRICATION • Types of lubricating systems • Four cycle systems reuse oil • Two cycle systems burn oil with fuel • Two and Four cycle systems oils CAN NOT be interchanged

  9. LUBRICATION Four cycle lubricating systems • Splash dipper

  10. LUBRICATION Four cycle lubricating systems • Splash dipper

  11. LUBRICATION • Four cycle lubricating systems • Splash Paddle Wheel

  12. LUBRICATION Four cycle lubricating systems • Barrel Pump

  13. LUBRICATION Four cycle lubricating systems • Barrel Pump

  14. LUBRICATION • Four cycle lubricating systems • Positive displacement Pump

  15. LUBRICATION • Four cycle lubricating systems • Full flow system • Positive displacement Pump

  16. LUBRICATION • Two cycle lubricating systems (Total loss) • Premix gas and oil • Oil injection

  17. LUBRICATION • Two cycle lubricating mixtures • Mixture ratio - amount of gasoline to oil • Examples: 16:1 32:1 40:1 50:1

  18. LUBRICATION • How oil gets dirty. • Blow – by gasses • Particles from engine parts • Dirt from checking oil levels

  19. LUBRICATION • Changing engine oil and filter • To reduce wear • Cars 3 mos. or 3000mi. • Small engines 30 – 50 hrs. or each season

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