Automotive Engines Part 3 (internal Parts).

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Presentation transcript:

Automotive Engines Part 3 (internal Parts)

Internal Parts of Block

Internal Parts of Block Crankshaft – converts linear motion to rotational motion Made from cast iron or forged steel Cast iron = cheap Forged Steel = strong

Crankshaft Purple – PTO Flange Red – Crankpin, Throw, Offset Blue – Main Yellow – Counterweight Green - Snout

Internal Parts of Block Piston – a cylindrical part fitted in a cylinder transmitting power created by the combusting fuel & air Cast Aluminum – Factory Hypereutectic – Street/Strip Forged – Hi-Perf

Piston Blue – Dome Green – Ring Land Red – Skirt Purple – Wrist Pin

Internal Parts of Block Connecting Rod – connects piston to crankshaft I – Beam or H – Beam Cast, Forged, Powdered Metal Iron, Steel, Aluminum, Titanium 7/22

Connecting Rod Blue: Big End Green: Small End Red: Bearings 8/22

Internal Parts of Block Camshaft – controls valve movement (Dist. Drive, Fuel Pump) 2. Two Main Types Flat Tappet Solid or Hydraulic Roller Mechanical or Hydraulic 9/22

Roller & Flat 12/22

Camshaft (Flat) Flat Tappet Lobe: Narrow and “Peaky” 11/22

Camshaft (Roller) Roller Lobe: Wide and flat 12/22

Tappets – Roller Vs. Flat 15/22

Flat Tappet (Hydraulic Vs. Solid)

Roller Tappet (Hydraulic Vs. Solid) 15/22

Internal Parts of Block Timing Chain / Gears – connect crank to cam 16/22

Timing Chain / Gears 17/22

Internal Parts of Block Oil Pump – pushes oil throughout engine Gear Type A pair of gears mesh with each other and revolve in a close fitting housing. Oil fed in at one side is carried out round the edge and out the outer side. Rotor Type An inner rotor meshes with the outer one which has one more lobe. Having different axes of rotation the spaces vary in size, causing oil to be drawn in and forced out. 18/22

Gear Type 19/22

Rotor Type 20/22

Internal Parts of Block Bearings (2 types) Plain Roller Plain type: item rides on a film of oil Three types Mains – allow crank to spin (2 piece) Rods – allow rods to spin (2 piece) Cam – allow cam to spin (1 piece) 21/22

Bearings 22 of 22

The End