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

Marine Propulsion

Change of Management at Yanmar

Having reached the age of retirement, Geert Jan Mantel will resign from his position as President of Yanmar Europe B.V. as per June 30, 2014, a position he has occupied since April 1, 2002.

LNG Bunkering Will Develop Fast - LR Study

Lloyd's Register’s (LR) LNG Bunkering Infrastructural Survey 2014 indicates that major ports around the world are either planning for, or are anticipating, the wide-scale development of LNG bunkering.

Rolls-Royce congratulates US Navy on christening of USS Zumwalt

Rolls-Royce congratulated the US Navy on the christening of the USS Zumwalt, the first of its new and highly sophisticated DDG 1000 multi-mission destroyer class of ship.

 
 
Maritime Standards Navigation Offshore Oil Pipelines Pod Propulsion Salvage Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | 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: 0.1007 sec (10 req/sec)