Turbocharger - maredu.gunet.gr · NR20/R - NR20/S 0.2 - 0.3 liters NR24/R - NR26/R 0.3 - 0.4 liters...

1 < > MAN Diesel & Turbo Stig S. Christensen L28/32H TurbochargerTurbocharger 29.05.2013

Turbocharger

L 28/32H Diesel Engine

Turbocharger Description

Turbocharger

Turbo charger basics system

A turbocharger consists of a turbine and a compressor linked by a shared axle. Exhaust gases from the

engine causing the turbine wheel to rotate. This rotation drives the compressor, compressing ambient air

and delivering it to the air intake manifold of the engine at higher pressure. Compressed air is then led

through a charge air cooler before entering the charge air receiver.

NR Turbo charger basic system

MAN Diesel turbocharger

Plain bearing

•Plain bearings

•Inboard bearing arrangement

•Uncooled hot gas casing

•Lubrication by the engine lube oil

system.

NR Turbo charger basic system

Principle systems of bearing arrangements

NR Turbo charger basics system

Turbo charger system Designation of NR turbocharger

Turbo charger system

Charge air cooler

A charge air cooler is used to cool air after it has passed through a turbocharger, but before it enters the

engine.

Charge air coolers range in size depending on the engine.

Vestas air coil A/S and GEA are the oldest makers still in business.

NR Turbo charger system

Cleaning turbine side

•Cleaning in- service by the dry-or wet-cleaning method is performed by injection of

a measured amount of granulate or water into the gas or compressor pipe of the

turbine.

•The injection of the granulate is done by means of working air at a pressure of app. 5-7

•The cleaning effect is similar to that of water washing i.e. a mechanical effect arising

from the impact of the cleaning medium of the turbine components.

The cleaning is carried out during high engine

load minimum 75 % at full load.

Before connecting the "blow-gun" open the closing valve (1), and

check whether there is free passage.

Fill cleaning granulated substance into the container (2) for

turbocharger type:

NR20/R - NR20/S 0.2 - 0.3 liters

NR24/R - NR26/R 0.3 - 0.4 liters

Connect to the working air system (4), 5 -7 bar.

Connect the "blow-gun" to valve (1). Open air valve (3).

Then open valve (1) slowly until a whistling sound indicates that

blowing-in takes place. Injection time app. 2 min.

Turbo charger exhaust system

Turbo charger system

NR 24 Gaps and clearance

NR/S Turbo charger system

NR 24 maintenace Lub.oil system

NR Jet assist

NR jet assist

With out Jet assist With Jet assist

NR Maintenance symbols

NR Maintenance service report

NR Maintenance Torque values

NR List of assemblies

NR Cartridge

NR complete rotor

NR Insert

Compressor side

Silencer

NR/STurbo charger system

Speed sensor

Cleaning device turbine side

Cleaning device for turbine II

Cleaning device compressor side

Covering

Cartridge

All data provided in this document is non-binding.

This data serves informational purposes only and is especially not guaranteed in

any way. Depending on the subsequent specific individual projects, the relevant

data may be subject to changes and will be assessed and determined

individually for each project. This will depend on the particular characteristics

of each individual project, especially specific site and operational conditions.

Disclaimer

Joe Bloggs

[Contact details]

Joe Bloggs

[Contact details]

Do you have any more questions?

Turbocharger - maredu.gunet.gr · NR20/R - NR20/S 0.2 - 0.3 liters NR24/R - NR26/R 0.3 - 0.4 liters...

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