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Basic Engines

Across
Holds the engine oil
Prevents leaks around shafts
Main rotating component
Moves oil through the engine
Connects piston to crankshaft
These prevent friction damage between two moving parts
These open and close to let 4 stroke cycle work
Down
Main structure of the engine
The piston rides inside
Creates compression
Actuates the valves
Upper end of the engine
Mechanical relationship of all the engine moving parts
The cylinder ____ must be sealed to make compression
Soft material between two hard surfaces to prevent leaks