Internal Combustion Engine

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Presentation transcript:

Internal Combustion Engine

Warm UP If we take an engine and advance the spark timing when will the spark occur? If we take an engine and retard the spark timing when will the spark occur? What is the optimal timing of an engine (before of after top dead center)?

Class Review of Last weeks Engine Introduction What are the 4 strokes of an engine? How does a 2 cycle differ from a 4 cycle? Why are fossil fuels preferred to alternative fuels? What are the components of the top end of an engine?

top half of the enternal combutstion engine (parts list, sketch these) Head and valve train, looking up from cylinder

Valve train and Spark Plug Push rods, rocker arms, valve cover, stem of the valves and valve springs assembly

Cylinder and Piston 3 rings on the piston and the importance of each

Mechanical Ignition Fly wheel and Coil

Bottom Half of Engine Crank shaft, Cam, Lifters and timing gears Most Important!!! Oil sump

What would happen if our engine didn’t have any gaskets? Pair and Share……. What would happen if our engine didn’t have any gaskets? Gaskets

Intake and carburetor Fuel Air Mix, Throttle control and Choke

Efi (Electronic fuel Injection) Fuel is injected at high pressure just the intake valve Computerized system regulates amount and timing of Fuel based on multiple sensors

GDI (Direct Injection System)

EFI or GDI Time to vote……with discussion Which is the most efficient and Why?

Warm Up What does a Gas engine have that a diesel engine not have

Cat 3408C

Diesel Engine Diesel is a heavier fuel than Gasoline Has more pollutants than other fuels due to the nature of the fuel Is much more efficient than other fuels Complete burn is reason for the vaporized pollution Diesel Engine

Weinkle Engine

Rotary Engine Also known as a weinkle engine Used in Germany during WWII Mazda tried it in the RX7 and RX8 sports car

Gas Turbine

Gas Turbine Used in aircraft Used as Jet/Helicopter engine