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1 Automotive Engines Part 3 (internal Parts). 2 Internal Parts of Block.

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Presentation on theme: "1 Automotive Engines Part 3 (internal Parts). 2 Internal Parts of Block."— Presentation transcript:

1 1 Automotive Engines Part 3 (internal Parts)

2 2 Internal Parts of Block

3 3 1. Crankshaft – converts linear motion to rotational motion 2. Made from cast iron or forged steel 3. Cast iron = cheap 4. Forged Steel = strong

4 4 Crankshaft Purple – PTO Flange Red – Crankpin, Throw, Offset Blue – Main Yellow – Counterweight Green - Snout

5 5 Internal Parts of Block 1. Piston – a cylindrical part fitted in a cylinder transmitting power created by the combusting fuel & air 2. Cast Aluminum – Factory 3. Hypereutectic – Street/Strip 4. Forged – Hi-Perf

6 6 Piston Blue – Dome Green – Ring Land Red – Skirt Purple – Wrist Pin

7 7 Internal Parts of Block 1. Connecting Rod – connects piston to crankshaft 2. I – Beam or H – Beam 3. Cast, Forged, Powdered Metal 4. Iron, Steel, Aluminum, Titanium

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

9 9 Internal Parts of Block 1. Camshaft – controls valve movement (Dist. Drive, Fuel Pump) 2. Two Main Types Flat Tappet Solid or Hydraulic Roller Mechanical or Hydraulic

10 10 Roller & Flat

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

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

13 13 Tappets – Roller Vs. Flat

14 14 Flat Tappet (Hydraulic Vs. Solid)

15 15 Roller Tappet (Hydraulic Vs. Solid)

16 16 Internal Parts of Block 1. Timing Chain / Gears – connect crank to cam

17 17 Timing Chain / Gears

18 18 Internal Parts of Block 1. 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.

19 19 Gear Type

20 20 Rotor Type

21 21 Internal Parts of Block 1. 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)

22 22 Bearings

23 23 The End


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