Engine Presentation
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Engine Presentation

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  • Also mention: Push rod DOHC SOHC Maybe 2 stroke not needing them
  • Interferance + non-interferance engines

Engine Presentation Engine Presentation Presentation Transcript

  • I'm going to tell you about engines (that's an engine) @zeenoside facebook.com/zeenoside [email_address]
  • Types of engine
    • 4 Stroke
      • Inline 4
      • V8
      • V Twin (M)
      • Parrellel twin (M)
    • 2 Stroke
      • Normally Single Cylinder
    • Rotary
    • Deltic
  • What does an engine need?
    • Fuel (Diesel, Petrol, LPG, etc)
    • Air
    • Spark (Catalyst)
    • Compression
  • Engine Basics – Cylinders + Pistons
    • Piston goes up and down inside cylinder
    • Piston is attached to crankshaft
    Piston Crown Gudgeon Pin Connecting Rod (con rod) Bearings (and con rod cap)
  • Engine Basics - Crankshaft
    • Pistons attach to the crankshaft which is presented to the outside of the engine allowing the power to be used.
  • Engine Basics – Valves + Camshafts
    • Allows fuel + air to go inside the cylinder at the right time.
    • Allows exhaust gas to escape the cylinder at the right time
    • Camshaft presses on the top of the valves in order to open and close them
  • Why ”4 Stoke”?
    • Intake
    • Compression
    • Power
    • Exhaust
  • Timing – what's it do?
    • Allows the valves to open at the right time for the piston
    • Methods:
      • Timing Belt (cam belt)
      • Timing chain
  • Fuelling
    • EFI (Fuel injection)
      • Injects fuel into intake valve based on crank position
      • Very tunable
      • Lots of sensors
    • Carburetors (magic)
      • Injects fuel based on amount of air being sucked in + magic
      • Uses phrases like ”diaphrams”, ”floats”, ”jets”, ”needles”
      • Very delicate
  • Spark generation
  • The computer side of things
    • The computer (ECU) needs to manage:
      • Camshaft advance/retard (lol!!)
      • Fuelling
        • Via MAP/MAF sensors
        • Crank Position sensor (CPS)
      • Temperature (fan control)
      • Boost (if fitted with turbo charger or super charger)
      • ”Choke”/Cold start
      • Idle speed
  • Other systems to consider
    • Lubrication system
    • Cooling system
    • Charging system
    • Turbo/Super charging (forced induction)
  • Interested in learning more?
    • HowStuffWorks.com
    • Automotive.com
    • davidsfarm on youtube
    • Pistonheads.com
    • boobies