Supercharging in marine engines is used for which of the following purposes?

Question

Question

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RRB ALP Mechanic Diesel 21 Jan 2019 Official Paper (Shift 1)

Answer 1

Explanation:

Supercharging in marine engines:

Supercharging is a process, where a great mass of air is admitted into the cylinder, for combustion and consequently a greater amount of fuel is burnt efficiently.
The power output of the engine is increased with higher thermal efficiency without increasing the size of the engine.
The supercharger is driven through gears directly from the engine crankshaft.
Supercharging system is commonly used in two-stroke and four-stroke marine engines, where higher compressed air is needed.

Superchargers:

A supercharger is a device that increases the pressure of the air-fuel mixture from the carburetor before it enters the engine.
It is connected between the carburetor and the cylinder in the way of the intake manifold.
It is usually driven by the engine through suitable gears and shafts.
There are three general types of superchargers:
- Centrifugal type
- Vane type
- Roots air-blower type

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