Question

When a smaller number of large cylinders are used, the friction and economy improve.

(a) True

(b) False

I had been asked this question by my college director while I was bunking the class.

My question is from Total Engine Friction in division Engine Friction and Lubrication of IC Engine

Answer 1

The correct answer is:

(b) False

When a smaller number of large cylinders are used, the friction generally increases, and the engine's economy tends to worsen. This is because larger cylinders have more frictional losses due to larger moving parts, and the surface area-to-volume ratio becomes less favorable for efficient combustion. A larger number of smaller cylinders, on the other hand, typically leads to better friction and economy by providing more efficient combustion and better balance.