Page 20: of Maritime Reporter Magazine (July 15, 1983)

Diesel Power Review

M.A.N.-B&W Alpha (continued from page 24) lowing: low inertia fuel injection, high injection pressure, optimized valve timing, resistance in gas ways, and a carefully adapted high efficiency turbocharger which gives low fuel consumption and clean combustion when running on heavy fuel.

The L28/32 and V28/32, with their redesigned cylinder heads, offer better gas flows and im- proved fuel economy as well as heavy fuel burning characteris- tics. Research is continuing to fur- ther reduce fuel consumption in all engine models.

The Alpha Diesel product line now includes the following series: 20/27 which develops 136 hp per cylinder at 1,000 rpm; model 23L which develops 155 hp per cylin- der at 825 rpm; 23/30 developing 170 hp per cylinder at 825 rpm;

L28/32 developing 285 hp per cyl- inder at 775 rpm and L32/36 which develops 500 hp per cylinder at 750 rpm. Alpha Diesel can now of- fer more horsepower with fewer cylinders.

B&W HOLEBY

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B&W Holeby manufactures four- stroke diesel engines ranging from 450 to 5,500 bhp. The company supplies diesel generator systems ^yyoii

ARE YOU IN THE BUSINESS OF RUNNING SHIPS—OR WRESTLING ELECTRONICS

If you're like most people in ship operations, you already know more than you want to about electronics—and sometimes that isn't enough. So quit worrying about constantly changing electronics requirements. Check it to someone who makes that their business, and devote your time to things that really matter.

Nav-Com Incorporated provides it's customers with complete systems engineering, installation, and service support of electronic communications and navigation systems. Our products include Single Sideband, Sitor/

Radiotelex, Marisat Communication Terminals, Sat/Nav, Loran-C, Radar, Omega, Closed Circuit TV Monitor- ing, Weatherfax, Electronic PABX Telephone Systems, Audio Entertainment & Paging, Color TV Entertain- ment Systems, and a wide range of onboard computer controlled systems.

We work for the top names in the marine industry on tankers, passenger vessels, freighters, tugs, con- tainer vessels, off-shore oil rigs, etc. We travel wherever our customers need us worldwide! Our Field

Service personnel are professionals-engineering caliber men who are FCC licensed and factory trained-and who enjoy what they do and take pride in their work!

Nav-Com is a factory authorized dealer for the most prominent names in the marine industry-names like

Alden, CAI, Furuno, Harris RF Communications, Intech, Krupp-Atlas, Magnavox, North American Philips

Communications, Racal Decca, Simrad, Texas Instruments, and many more.

For your next requirement, let Nav-Com prepare a professional, engineering level systems proposal at no cost or obligation to you.

NAV-COM Inc., 9 Brandywine Drive, Deer Park, NY 11729

For More Information call ~ TELEX: 645 744 "NAVCOM NY DEER" (516) 667-7710

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BIOBOR cures engines that spit and sputter

Biobor eliminates the sludge and slime which clog filters, plug fuel lines, and produce injector nozzle deposits which cause engine failure. It sterilizes diesel fuel systems by destroying microorganisms and preventing their future growth. Filter and injector cleaning and replacement is drastically reduced.

Initially formulated to prevent flame outs in jet engines, Biobor, an EPA registered biocide is highly regarded as the most effective throughout the maritime industry. 1 GALLON TREATS 9,600 GALLONS OF FUEL

BULL & ROBERTS, INC. 785 Central Avenue

Murray Hill, N.J. 07974 (201) 464-6500

Established 1903

IB MARINE SALES

REPRESENTING ^jfatf DofaiADn fiubbsLh Qo-

Rubber Sleeve or Flange Bearings

Stuffing Boxes and Keel Coolers

Heavy Duty Fendering

WESTERN BRANCH METALS

Armco Stainless Shafting Systems

Machining — Propeller Nuts

DAMAN INDUSTRIES

Ceramaloy Coatings

Propeller Shaft Liners

Dredge Pump Sleeves and Shafts

KAHLENBERG BROS.

Air Horns — S/S Propellers

NATIONAL FLUID SEPARATORS, INC.

Bilgemaster

Automatic Oily/Water Separator Systems

SCHRADER BELLOWS

Pneumatic Propulsion Control Systems

P.O. Box 33, Glenhead, N.Y. 11545 516-676-3738 for shipboard electrical power and to power auxiliary equipment aboard ships.

In addition to diesel engines, production includes spare parts and components, such as crank- shafts and connecting rods, for the licensees' production of four-stroke

B&W diesel engines. Fuel oil mix- ing units and other auxiliary units are also manufactured.

As a result of recent develop- ment projects, all types of Holeby engines can now be supplied in uprated four-valve versions which operate efficiently on the same heavy oil used in the main en- gines. Holeby has termed this their

Unifuel system.

MTU OF NORTH AMERICA

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MTU of North America, Inc.,

Greenwich, Conn., is the Ameri- can-based subsidiary of MTU-

Friedrichshafen, West Germany, which is owned jointly by Daim- ler-Benz AG and Maschinenfabrik

Augsburg-Nurnberg AG (MAN

Corp). The company has devoted the past five years to building an organization in the U.S. which mirrors the high standards of the

MTU organization worldwide. It has adopted a policy of matching proven MTU engineering technol- ogy to each important segment of the American market, backed by a commitment to providing the highest possible degree of service and technical support.

In addition to MTU-Fried- richshafen's worldwide service network, MTU of North America has established service centers for engine repair and overhaul and personnel training, as well as test- ing and warehouse facilities, at strategic locations throughout the

U.S.

The MTU diesel line covers a power output range of 440 to 10,000 hp at rated speeds between 1,000 and 2,400 rpm. Basic design features common to the series are: V-configuration, water cool- ing, exhaust gas turbocharging and charge air cooling. All engines are the result of the collective ex- perience gained by Maybach,

Mercedes-Benz, and MAN in the development of cost-effective, high- performance diesel engines.

The model 20V 1163 TB 93 en- gine, introduced this year, is evi- dence of MTU's continued success in its engine development pro- gram. MTU states the program fo- cuses on increasing engine power and power concentration to open new powering possibilities, reduc- ing fuel consumption throughout the entire speed range, extending operating range through higher

MEPS and improving partial-load characteristics and the use of poorer/heavier fuels with lower ce- tain numbers and higher impurity levels. MTU employs cylinder cut- out, cylinder charge transfer, and sequential turbocharging. All three (continued on page 28) 26 Write 834 on Reader Service Card Write 385 on Reader Service Card Maritime Reporter/Engineering News