What are the key components in the Audi A6 engine?

I recently purchased an Audi A6 and I'm curious about its engine. Can you tell me about the different components that make up the engine and their functions?

The engine of the Audi A6 is made up of several components, including the cylinder block, pistons, crankshaft, and valves. These work together to generate power and facilitate efficient combustion.

The Audi A6 also has a turbocharger, which increases the amount of air entering the engine and improves performance. Additionally, the engine has a variable valve timing system, which adjusts the timing of the valves for optimal power.