Man VTA

Table of contents
1 Adjustable turbine nozzle ring (VTA) .................................................................................................... 3
1.1 Range of applications .................................................................................................................3
1.2 Application Examples .................................................................................................................8
1.3 Low-speed propulsion engines from MAN B&W ......................................................................11
2 Overview of series ............................................................................................................................... 14
2.1 VTA on TCA turbocharger .........................................................................................................14
2.2 Dimensions ................................................................................................................................14
2.3 Weights ......................................................................................................................................14
2.4 Casing Positions ........................................................................................................................15
3 Design .................................................................................................................................................. 16
3.1 Characteristics of the Assemblies ...........................................................................................16
3.2 Operation Method of the Adjusting Device ..............................................................................17
4 Systems ............................................................................................................................................... 18
4.1 VTA Control (VCS) ......................................................................................................................18
4.2 Cooling Water System ...............................................................................................................20
4.3 Inflation Air ................................................................................................................................22
5 Engine room planning ......................................................................................................................... 24
5.1 Equipment .................................................................................................................................24
5.2 VTA Control System (VCS) ........................................................................................................24
5.3 Multi Purpose Controller (MPC) ................................................................................................25
5.4 Main Operating Panel (MOP) ....................................................................................................25
5.5 Cabling ......................................................................................................................................26
6 Operation ............................................................................................................................................. 27
6.1 Putting into Operation ...............................................................................................................27
6.2 VTA – Adjustment Ranges and Adjustment Speeds ................................................................27
6.3 Emergency Operation on Failure of the VTA Adjusting Device ...............................................27
7 Maintenance and inspection .............................................................................................................. 29
7.1 Introductory Remarks ...............................................................................................................29
7.2 Cleaning the Variable Turbine Area ..........................................................................................29
7.3 Maintenance of the Adjusting Device ......................................................................................29
7.4 Inspection of the Pipe Systems ................................................................................................29
7.5 Electronic Equipment ................................................................................................................29
8 Matching ............................................................................................................................................. 30
8.1 Matching Procedure ..................................................................................................................30
8.2 Adjusting the Charging Air Pressure ........................................................................................30
2013-12-04 - de
Table of contents
MAN Diesel & Turbo
1 (38)