Class 4 (4th Engineer) MEKM 📅 Jul 2022

Exam Question

(a) State two reasons for fitting and exhaust gas turbocharger to an engine. (4)

(b) For each of the following, describe the effects of a dirty or restricted.

(i) Air filter. (4)

(ii) Exhaust gas turbine (4)

Reference Answer

### (a) Reasons for Fitting an Exhaust Gas Turbocharger
An exhaust gas turbocharger is fitted to a marine diesel engine to improve its overall performance and efficiency. The two primary reasons are:
1. **Increased Power Output & Power Density:**
* A turbocharger utilizes the waste energy from the engine's exhaust gas, which would otherwise be lost to the atmosphere.

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