Class 1 (Chief Engineer) Engineering Management 📅 Jul 2024

Exam Question

(a) List out the differences in the ME engine, as compared to conventional MC engine? (4)

(b) What is the purpose of the HPS system? What is meant by the HCU- which components are included in this? (4)

(d) Describe the differences in the working of the fuel pumps (Called Fuel Pressure Boosters) in ME engines, as compared to fuel pumps of conventional engines. (4)

Reference Answer

### (a) Differences between MAN B&W ME and Conventional MC Engines
The primary distinction lies in the method of control for fuel injection and exhaust valve actuation. The ME (Electronically Controlled) engine replaces the conventional camshaft with a sophisticated electro-hydraulic system, offering superior control and efficiency.
1. **Control System & Actuation:**
* **ME Engine:** Utilizes a fully electronic control system (e.g., MAN's Engine Control System - ECS). It replaces the chain-driven camshaft with a Hydraulic Power Supply (HPS) and individual Hydraulic Cylinder Units (HCU) for each cylinder. Actuation signals are electronic.

Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.

View plans Browse library

← Browse more questions

Prepare on Android — MeoMock on Google Play