250 likes | 750 Views
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
E N D
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 • Dry (powder) • Semi dry (grease) • Viscous (oil) • Function of engine oil • Lubricate • Clean • Cool • Cushion • Seal
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
Lubrication • SAE Viscosity / Grade 5W30 and 30
Lubrication • SAE Viscosity / Grade 5W30 and 10W30
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
LUBRICATION • A.P.I. American Petroleum Institute • Service index • List of ratings determining oil application (SJ)
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
LUBRICATION Four cycle lubricating systems • Splash dipper
LUBRICATION Four cycle lubricating systems • Splash dipper
LUBRICATION • Four cycle lubricating systems • Splash Paddle Wheel
LUBRICATION Four cycle lubricating systems • Barrel Pump
LUBRICATION Four cycle lubricating systems • Barrel Pump
LUBRICATION • Four cycle lubricating systems • Positive displacement Pump
LUBRICATION • Four cycle lubricating systems • Full flow system • Positive displacement Pump
LUBRICATION • Two cycle lubricating systems (Total loss) • Premix gas and oil • Oil injection
LUBRICATION • Two cycle lubricating mixtures • Mixture ratio - amount of gasoline to oil • Examples: 16:1 32:1 40:1 50:1
LUBRICATION • How oil gets dirty. • Blow – by gasses • Particles from engine parts • Dirt from checking oil levels
LUBRICATION • Changing engine oil and filter • To reduce wear • Cars 3 mos. or 3000mi. • Small engines 30 – 50 hrs. or each season