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worldwide, and engines are manu- factured under license in Sweden,

Spain, Yugoslavia, Brazil, Japan, and Korea.

Engines are based on two designs: the 23/30 and the 28/32, designating the bore/stroke in centimeters, both running at 720/750 rpm. The capac- ity ranges from 500 to 2,000 kw for in-line engines, thus covering all market requirements for electric power generation in ships.

Exceptional cases, such as large passenger vessels, are covered by V- type engines with a maximum of 18 cylinders per unit.

Based on operating experience with heavy fuel oil installations in service since the early 1960s, all engines are designed for burning of all commercially available fuel oils with viscosity up to 700 cSt at 50

C.

The Unifuel concept, in which auxiliary engines are operated con- tinuously without any restrictions on the same heavy fuel as the main diesel engine, was introduced in 1980, and now constitutes the vast majority of gensets supplied to the newbuilding market. Integrated fuel treatment plants are developed and produced by Holeby, and are usual- ly specified as part of the gensets.

Continuous development of both engine types is performed with a view to match in advance future market requirements, and have late- ly been concentrated on specific fuel consumption and environmental considerations with regard to emis- sions and noise control.

MIRRLEES BLACKSTONE

Circle 30 on Reader Service Card

Mirrlees Blackstone, the Britisl diesel engine manufacturer, has its

U.S. headquarters in Houston, where it warehouses spare parts and has service personnel as well as new engine marketing for the marine and industrial sectors.

The Mirrlees Blackstone line of diesels is manufactured at two plants in the U.K.—at Stockport, where the first British diesel engine was built by Mirrlees in 1897, and at

Stamford, where the original Black- stone company was established in 1837.

The range of advanced-technolo- gy engines produced in these facto- ries covers horsepowers from 330 to 17,624 bhp. The E and the ESL

MK2 series cover outputs from 330 to 4,000 bhp at crankshaft speeds of up to 1,000 rpm. During the past year, an addition to the line of a 12- and a 16-cylinder V-form version has been made. The turbocharged and intercooled ESL MK2 can burn residual fuels of up to 3,500 sec Red- wood 1. The MB 190 model is a heavy-duty high-reliability design built in 6- to 16-cylinder forms, with power outputs of 860 to 2,864 bhp at 1,500 rpm.

The medium-horsepower range offered by Mirrlees is covered by the

MB 275, a heavy-fuel diesel built in 6- to 16-cylinder configurations with power outputs of 1,600 to 6,166 bhp at speeds up to 1,000 rpm. This engine is designed for heavy fuel burning capability with low specific fuel consumption and ease of main- tenance.

The medium-speed Mirrlees K

Major covers the horsepower range up to 13,000 bhp. This model is offered in a range from 6 to 18 cylin- ders and is designed to burn heavy fuel at speeds up to 600 rpm. The new MB 430 has recently been an- nounced, with outputs up to 17,624 bhp. This range covers 6- to 18- cylinder versions at 500 to 600 rpm.

Mirrlees's research and develop- ment is continually upgrading exist- ing engine designs and producing new models. Mirrlees Blackstone is a wholly owned subsidiary of the

Hawker Siddeley Group.

MITSUBISHI

Circle 31 on Reader Service Card

Mitsubishi Heavy Industries Ltd. of Japan last year introduced its newly developed UE-LA Series of extra-long-stroke diesel engines to the marine market. With a specific fuel consumption in the economy rating of 119 grams per bhp-houi (116.5 for a derated engine) for the largest model in the series, Mitsubi- shi claims that the new UE-LA offers the lowest SFC for engines of their type.

In addition to the low fuel rate, (continued) mCKfet,

PERFORMANCE SO IMPROVED,

WE CHANGED

THE NAME...

CUMMINS VTA28-M

Taking the proven, reliable 5 W x 6" bore and stroke V-12 design, and using the latest diesel technology, Cummins delivers a new, more powerful engine matched to the tough requirements of today's marine industry.

Rated 675 continuous bhp at 1800 rpm, the powerful yet compact VTA28-M is an im- provement of 55 bhp with less than one gallon-per-hour in- crease in fuel

More powerful with no sacrifice in fuel consumption. That, coupled with Cummins full package support of on-the-spot technical assistance, installa- tion recommendations, com- puterized propeller selection, and instrumented sea trials brings a new, clear choice in marine propulsion to owners and captains around the world.

And you can always depend on the Cummins Distributor and

Marine Dealer network, one of the most extensive in the indus- try, to provide expert service, complete service facilities, and repair part inventories.

Find out more about

Cummins VTA28-M from your nearest Cummins

Distributor or write:

VTA28-M, Cummins

Engine Company, Inc.,

Box 3005, MC 60403,

Columbus, IN 47202-3005.

CUMMINS VTA28-M

NOBODY KNOWS DIESELS BETTER ) 1986, Cummins Engine Company, Inc.

Circle 135 on Reader Service Card

July 15, 1986 25