How did the DB601/DB605 engine oil system work, with the engine being inverted?

[Todd Secrest]

I guess in a normal V engine, oil will drip down into the oil pan, from the cylinders.
But with an inverted V engine, what keep the oil from collecting in the engine cylinders?

 

[Crimea_River]

Daimler-Benz DB 605 Oil System...I Don't Understand

 

[MiTasol]

The same thing that stops oil from collecting in the lower cylinders of radials when they are running.
As the piston moves up it achieves a speed of hundreds of metres per second. The oil is thown by the piston back to the top of the engine and then flows down to the scavenge system.