I found a wicked little animation on YouTube:
But it isn’t annotated. So I decided to see if I knew what all the parts were…
In order of introduction:
Engine block (big alu / magnesium)
Crankshaft
Cranks
Pistons
Piston bearings
Flywheel
Engine head
valves
springs
tappets
Camshafts
Head gasket
Then, engine head goes on the engine block
Oil pump
Timing belt (in this case, timing chain)
Timing belt cover
Rocker cover with oil cap
Rocker cover gasket
Oil sump
Oil filter
Coil
Distributor
Water / cooling in and out and piping
Inlet manifold with throttlebody at the top right (silvery thing)
Dipstick
Injectors (green)
Electric wiring for injection and ignition system
Spark plugs + distributor cap
Engine turns over - Water pump goes on
Auxhillary water pump goes on
Alternator
Exhaust manifold (gold coloured)
Then demonstrates how an engine works when its running. Rather self-explanatory.