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Depending on the type of engine, piston, turbine, external, rotary, among others there are numerous components to an engine without which the engine will not function. For example a typical piston cylinder engine(from any car) will not work without any of the following components-piston, carburetor/fuel injection, con-rod, crankshaft, inlet/exhaust valves, camshaft, camchain/timing belt.

An engine is a complex device that requires many finely balanced components to work in harmony. But to pick the most important, it would probably be the crankshaft which is present in any type of engine in some shape or form.

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16y ago

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