Why does vehicles that operate on diesel vibrate so much?

Question

Why does vehicles that operate on diesel vibrate so much?

In: Other

Answer 1

Diesel require higher pressures to explode then petrol so the engines have to be built with heavier pistons that can handle the pressure. But this means it takes higher forces to make the pistons change direction and it is these forces that cause the vibrations. Additionally this means diesel engines are usually slower then petrol engines so the vibrations are lower in frequency and lower frequency vibrations is harder to dampen. The overall result is that diesel engines creates more powerfull vibrations that is harder to dampen.