Exam Question
Explain with a suitable diagram, the components of a an auxiliary engine fuel valve? Briefly explain, the process of overhauling and pressure testing the fuel valve? (16)
Class 4 (4th Engineer)
MEP
📅 Aug 2025
Reference Answer
### **Components of an Auxiliary Engine Fuel Valve (Injector)**
A fuel valve, commonly referred to as a fuel injector, is a precision-engineered component responsible for delivering a metered quantity of atomized fuel into the combustion chamber at a specific time and pressure. Its correct functioning is critical for engine performance, fuel efficiency, and emissions.
**Key Components:**
* **Nozzle Holder (Injector Body):** The main casing which houses all other components. It provides passages for high-pressure fuel delivery to the nozzle and for leak-off fuel return. It also facilitates mounting the injector onto the engine's cylinder head.
A fuel valve, commonly referred to as a fuel injector, is a precision-engineered component responsible for delivering a metered quantity of atomized fuel into the combustion chamber at a specific time and pressure. Its correct functioning is critical for engine performance, fuel efficiency, and emissions.
**Key Components:**
* **Nozzle Holder (Injector Body):** The main casing which houses all other components. It provides passages for high-pressure fuel delivery to the nozzle and for leak-off fuel return. It also facilitates mounting the injector onto the engine's cylinder head.
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play