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Timing and Interference

Timing and Interference. By Stephanie Kwan. Objective:. To understand how a basic engine works Link timing and interference See how the two affect the performance. How Engines Work:. 4 Stroke Cycle - Intake Stroke - Compression Stroke - Combustion Stroke

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Timing and Interference

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  1. Timing and Interference By Stephanie Kwan

  2. Objective: • To understand how a basic engine works • Link timing and interference • See how the two affect the performance

  3. How Engines Work: • 4 Stroke Cycle- Intake Stroke- Compression Stroke- Combustion Stroke • Note: Valves are closed during compression and combustion for a sealed chamber in most ideal state

  4. Timing is Everything: • High Speeds:- Piston must move up and down quickly- Valves are opened and closed quickly\ • Probelm: - Not enough time for cylinders to fill up\ • Solution: Intake valves open during exhaust stroke • Performance: Crankshaft and Camshaft must be adjusted accordingly

  5. Timing Advanced Techniques • - Mechanical and Electrical Ways • Larger engine- More fuel per rotation would combust • Forced induction- Pressurized amount of gas in the engine • VTEC (Variable Valve Timing and Lift Electronic Control)- At high RPMs open valves wide- At low RPMs open the valves small- Found in Hondas

  6. Conclusion: • Basic engines work in a 4 stroke cycle • Timing is everything • Valves • Spark plug • Advanced Techniques • Large engines • Forced Induction • VTEC

  7. References • http://static.howstuffworks.com/gif/camshaft-damage.jpg • http://www.first-to-fly.com/History%20Images/1903_Engine_schematic.jpg • http://auto.howstuffworks.com/engine1.htm

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