What does 5V mean on the Audi A4 Engine?

It has a 1.8 engine. It is a quattro. 1.8 engine means 4 cyl. What does the 5V mean?What does 5V mean on the Audi A4 Engine?5 valves per cylinder.What does 5V mean on the Audi A4 Engine?On an engine V usually stands for how many valves it has per cylinder. Typically the more valves per cylinder the more horsepower it allows the engine to create.