What is supercharging Marine?

Supercharging (or Pressure charging) is a process where a greater mass of air is admitted in the cylinder for combustion and consequently a greater amount of fuel is burnt efficiently. Substantial increase in power for given speed and size of the engine. …

What is the RPM of main engine?

Main Engine can run at 98 and 97 RPM if load is 55 and above. Main Engine can be run continuously at or below 86 RPM with Auxiliary Blowers and two Generators running.

What is turbocharger in ship?

The turbocharger is an integral part of the ship’s marine engine as it reuses the exhaust gases in order to increase the overall efficiency of the engine. It consists of two parts – blower and turbine sides, which need equal attention while carrying out routine maintenance procedures.

What is the difference between a supercharger and a blower?

– While the purpose of superchargers and blowers are basically the same – to pump air into the engine at a rate that is beyond the force of atmospheric pressure – superchargers are driven mechanically via the belts that run off the crankshaft or by an electric motor, while blowers use centrifugal force to push the air …

What is RPM in ship?

Revolutions per Minute (RPMs) RPM is the number of full turns or rotations of a propeller in one minute. RPM is often designated by the variable N. High values of RPM are typically not efficient except on high speed vessels.

What is eco speed for a ship?

Slow steaming or ECO speed is the practice of significantly reducing the sailing speed to reduce fuel consumption not only for parts of a voyage, but for a period of voyages, a group of vessels or for a whole fleet.

What is TC surging?

Turbocharger surging may be defined as a high pitch vibration of audible level coming from the blower end or compressor end of the turbocharger.

What is the working principle of turbocharger?

The turbocharger on a car applies a very similar principle to a piston engine. It uses the exhaust gas to drive a turbine. This spins an air compressor that pushes extra air (and oxygen) into the cylinders, allowing them to burn more fuel each second.

Which supercharger is best?

The centrifugal superchargers look like a turbo and act like a turbo, but are belt driven by the crankshaft. The two best brands we use for these types of setups are Procharger and Paxton. These superchargers do not create heat as much as the roots blowers. We’ll get to those in a minute.

What is a two stage supercharger?

A two stage supercharger used a compressor with two or more compression stages, often with an inter cooler between them, driven by a transmission with different gear ratios to control the compressor speed. A schematic of this type of supercharger can be seen here on a Rolls Royce Eagle engine.

What is an auxiliary blower on a diesel engine?

On two-stroke diesels, electrically-driven auxiliary blowers are usually provided because the exhaust gas-driven turbo-charger cannot provide enough air at low engine speed. Auxiliary blowers are internal parts of the main engine.

What are the uses of auxiliary boilers on ships?

Auxiliary boiler is provided on ships for supplying steam for heating fuel oil, lube oil, cargo, freshwater, etc. Steam is also used for air conditioning. Marine Engineering Study Materials Information for Marine Engineers

What isauxiliary blower in IC engine?

auxiliary blowers are motor driven and used in ic engine to provide sufficient amount of scavange air during low load condition, as during low load t/c is unable to provide sufficient combustion air .

What is auxiliary marine machinery?

 Auxiliary marine machinery also includes separators for removing water and other contaminants from fuel and oil, steering machinery, capstans, windlasses, winches for anchoring, mooring, and cargo loading, and cranes.