Why would engine designers opt to include more cylinders in an engine instead of increasing the displacement?

Question

For example, why would a car manufacturer opt to to use a 2.0L in line six instead of a 2.0L in line four in a vehicle. Are the benefits of including more cylinders in an engine worth the added complexity?

In: Engineering

Answer 1

Basically, having more cylinders allows for smoother and more balanced power delivery, which translates to better performance and efficiency. Plus, increasing displacement beyond a certain point can lead to diminishing returns and reduced fuel economy. So, while more cylinders do add complexity, the benefits can make it worthwhile for engine designers to opt for them.