Page 12: of Maritime Reporter Magazine (July 1988)

Diesel Power Review (continued) efficiency and reliability which is proven by their excellent service record aboard about 800 ships and the fact that virtually no major modifications or design changes have been necessitated over the years, proving the stability in design based on the company's long tradi- tion in low speed uniflow scavenged diesels.

With fuel rates below 160 g/kwh, an engine efficiency of more than 50 percent is obtained, with estab- lished working cycle parameters.

Further possibilities to enhance to- tal economy are available in the form of layout flexibility, enabling the supply of tailor-made engines optimized for the ship designer's wishes for specific output/speed combinations.

Other possibilities exist in the use of standardized power take-offs (PTOs) and turbo-compound sys- tems as well as in the establishment of integrated energy systems on board comprising both MAN B&W two-stroke main engines and four- stroke auxiliary engines.

Hence, wide application possibili- ties can be met with the MC engines and its pertaining pre-designed or tailor-made scope of system engi- neering.

MAN B&W DIESEL

Germany

Circle 27 on Reader Service Card

Even in the face of the difficult market conditions for marine new- buildings and stationary diesel pow- er stations, medium-speed four- stroke engines built by MAN B&W

Diesel have solidified their excellent market position. In the last 24 months, a total of 92 engines, devel- oping over 980,000 hp, have been sold in the engine series 40/45, 40/ 54, 52/55 and 58/64. Two thirds of these engines power ships and one third are intended for diesel power stations. These sales figures were achieved in equal shares by the

Augsburg works and the worldwide network of licensees. One notewor- thy event was the sale of seven L40/ 54 diesel engines to Meyer Werft shipyard to power a new cruise liner being built for cruise operator

Chandris.

Although the demand for large merchant vessels and the market for stationary power supply units both reached their lowest points to date in the last few years, MAN B&W

Diesel was able to further increase its market share in the output range between 5,000 and 16,000 hp (3,676 and 11,264 kw), with their econom- ical, technicality advanced and re- fined four-stroke engines.

In the output range 500-2,000 kw,

MAN B&W's Holeby works launched an upgraded version of the tried and tested "23 and 28" engine series. MAN B&W was able to se- cure a worldwide market share of 18 percent for marine auxiliary gensets in this output range. Its market suc- cess was mainly the result of design improvements achieved by the engi- neering department at Augsburg working in close cooperation with

MAN B&W's licensees.

The new generation engines in- volved the further enhancement of the proven features which make these gensets ideal for burning heavy fuel up to IF 700 (7,000 sec.

Rl), without restrictions as to low- load operation or starting and stop- ping. In addition, various measures were implemented which open up new operating possibilities and pro- vide for increased reliability. These features include: flexible engine layout; electrical output adjusted to best meet the needs of the operator.

Further adjustment is also possible while the ship is in service so as to minimize specific fuel consumption; constant-pressure turbocharging; integrated charge air system—this system, for which a patent is pend- ing, enables the genset to operate continuously at low-load down to idle. Thus generating back-up ca- pacity is readily available at all times; and low space requirement— it was possible to reduce the length and width of the genset by optimiz- ing the attachment of additional equipment. (continued) •*• Circle 304 on Reader Service Card

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