Exam Question

Heavy Fuel Oil (HFO) supplied to a main engine requires continuous monitoring of its viscosity to ensure optimal combustion and prevent engine damage. The viscosity directly impacts the fuel's atomization quality upon injection, which is critical for efficient and clean burning.
### 1. Introduction and Purpose
The continuous monitoring of Heavy Fuel Oil (HFO) viscosity before injection into the main engine is paramount for several reasons:
* **Optimal Atomization**: The correct viscosity ensures that HFO can be finely atomized by the fuel injectors, leading to a homogenous air-fuel mixture and complete combustion.