How is it possible for a 4 cylinder to have 16 valves?

Question

I thought you had twice as many valves as you do cylinders.

4x2=8. So, why do some cars have a 4 banger with 16v?

the particular engine I'm looking at is a 1.6L DOHC 16V l-4
for a subcompact car.

Answer 1

You have to have at least 2 valves per cylinder -- one intake and one exhaust. It's entirely possible to have more than 2, and 3 or 4 valves per cylinder are not unusual at all. Designing an engine with more valves improves the breathing ability of the engine and helps improve performance, fuel economy, or both.

Answer 2

old technology. Some cars have 12. The car breathes more efficiently if it can get the gas in there and the exhaust out. More power. So you would have 2 intake and 2 exhaust per cylinder.

Answer 3

4 valves per cylinder. 4x4=16. Two exhaust and two intake. Some cars have 3 per cylinder.

Answer 4

There are 4 valves per cylinder. Two intake and two exhaust.

Answer 5

Because it has 4 valves per cylinder, as opposed to the standard 2 valves per cyl...

Answer 6

there are 2 exhaust and 2 intake valves per cylinder, better efficiency.

Answer 7

previous technologies. some automobiles have 12. the motor vehicle breathes extra effectively if it may get the gasoline in there and the exhaust out. extra ability. so which you may have 2 intake and a pair of exhaust in step with cylinder.

Answer 8

They can turn more RPMs with smaller valves = more power.

Answer 9

Well you right about wat u said "I thought you had twice as many valves as you do cylinders." but do particuraly understand the question. but if u could ask againg and put in more detail thankyou