Turbocharger Cut-off System

Tuesday, July 21, 2009

To meet the growing demand for running large container vessels on varying loads, MAN Diesel has developed a turbocharger cut-out system that improves main-engine performance during low-load operation.

MAN Diesel’s Turbocharger Cut-Out System lowers main-engine fuel-oil consumption and improves performance during low-load operation. The system includes two, pneumatically operated cut-out valves placed at the turbine inlet and compressor outlet.

Installation of the Turbocharger Cut-out system requires little time and MAN Diesel PrimeServ reports that with the right planning, off-hire can be avoided. Installation during voyages can be carried out by a MAN PrimeServ installation team.

On engines with three turbochargers, one turbocharger cut-out enables operation at loads from 20% to 66% MCR, delivering:
•    an expected SFOC reduction of 5g/kWh and a 0.25 bar increase in scavenge-air pressure at 25% power
•    an expected SFOC reduction of 3g/kWh and a 0.52 bar increase in scavenge air pressure at 50% power
•    turbine-out temperature drops of up to 30 degrees.

Engines with four turbochargers and one turbocharger cut-out enables operation at loads from 20% to 74% MCR, delivering:
•    an SFOC reduction of 6g/kWh per 0.15 bar increase in scavenge-air pressure at 25% power
•    an SFOC reduction of 5g/kWh per 0.41 bar increase in scavenge-air pressure at 50% power
•    turbine-out temperature drop of up to 50 degrees

For engines with less than three turbochargers, MAN Diesel PrimeServ recommends a solution with variable turbine inlets.

Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

U.S. Shipbuilding: ESG Nabs Two Z-Drive Tug Contracts

Eastern Shipbuilding (ESG) said that Suderman & Young Towing Company and Bay Houston Towing Company each exercised one additional Z-Drive Tug to be built at ESG.

FMT Orders Another Towboat from Eastern Shipbuilding

Eastern Shipbuilding Group, Inc. is pleased to announce that Florida Marine Transporters, Inc. of Mandeville, LA exercised another additional 90’x32’x10’ “Canal

Court Dismisses Boating Industry’s Challenge to EPA Misfueling Rule

The National Marine Manufacturers Association (NMMA) said it is disappointed with the U.S. Court of Appeals decision released on Tuesday, October 21, 2014 for the D.

 
 
Maritime Security Maritime Standards Naval Architecture Pipelines Port Authority Salvage Ship Electronics Ship Simulators Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0965 sec (10 req/sec)