Exam Question
Sketch and describe the operation of a governor suitable for diesel generator. (16)
Class 4 (4th Engineer)
MEKM
📅 Dec 2022
Reference Answer
### **Introduction and Principle**
A governor for a diesel generator is a critical device designed to maintain the engine's rotational speed (RPM) at a near-constant value, irrespective of changes in electrical load. For AC generators, maintaining a constant speed is essential to ensure a stable frequency of the generated electricity (typically 50 or 60 Hz). The system described is an **electronic governor** employing an **electro-hydraulic actuator**, which operates as a closed-loop feedback control system.
The fundamental principle involves three stages:
1. **Sensing:** Continuously measuring the actual engine speed.
A governor for a diesel generator is a critical device designed to maintain the engine's rotational speed (RPM) at a near-constant value, irrespective of changes in electrical load. For AC generators, maintaining a constant speed is essential to ensure a stable frequency of the generated electricity (typically 50 or 60 Hz). The system described is an **electronic governor** employing an **electro-hydraulic actuator**, which operates as a closed-loop feedback control system.
The fundamental principle involves three stages:
1. **Sensing:** Continuously measuring the actual engine speed.
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