Page 13: of Maritime Reporter Magazine (July 15, 1983)

a C.I.D. of 855 (14 litres) and op- erate at 1,800 rpm. The N-855-M is naturally aspirated and rated for continuous duty at 195 hp. The

NT-855-M is turbocharged and rated at 270 or 240 hp. The NTA- 855-M is both turbocharged and aftercooled and rated at 325 hp.

The KT/KTA-1150 series en- gines are in-line six-cylinder models and have become the standard for fishing boats in the

U.S since their introduction in 1974. In the development of the

K engines, Cummins applied the knowledge gained through over 60 years of heavy-duty diesel experi- ence. The KT-1150-M is a turbo- charged model rated 365 or 400 hp at 1,800 rpm and the KTA-1150-M is turbocharged and aftercooled and is rated 470 hp at 1,800 rpm.

Displacement is 1,150 cubic inches (18.9 litres).

The VT/VTA-1710- series are 12-cylinder, V configuration die- sels with a displacement of 1,710 cubic inches (28 litres). This series has established a reputation for exceptional reliability and dura- bility in a wide variety of work- boat and fishboat applications. The

VT-1710-M is turbocharged, rated 490 hp at 1,800 rpm continuous, and the VTA-1710-M is turbo- charged and aftercooled with con- tinuous ratings of 545 or 620 hp at 1,800 rpm.

Introduced into the fish and workboat market in 1974 and 1980, respectively, the KT/KTA-2300-M and KTA-3067-M series complete the Cummins' product line with the high horsepower, reliability, durability, and fuel economy re- quired for such engine applica- tions. The 2300 series engines are 12-cylinder V configuration design with a displacement of 2,300 cubic inches (37.8 litres), and ratings of 800 hp at 1,800 rpm for the turbo- charged KT, and 940 hp at 1,800 rpm for the turbocharged and af- tercooled KTA. The turbocharged and aftercooled KTA-3067-M is a 16-cylinder model with a 3067- cubic-inch (50.3 litre) displace- ment and is rated 1,250 hp at 1,800 rpm.

DETROIT DIESEL

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Detroit Diesel Allison has an- nounced new advanced fuel econ- omy models of its series 149 diesel engines. The turbocharged and in- tercooled engines are the most fuel efficient, heavy-duty diesels avail- able in their power range, accord- ing to David Merrion, director of diesel engine sales.

The Detroit Diesel 149 engines in 12 and 16-cylinder, vee-block configurations are expected to show fuel economy improvements of about 3.5 percent over current en- gines at the same horsepower rat- ings, Mr. Merrion said. Twelve- cylinder models are available up to 894 bhp, 16-cylinder models to 1212 bhp, in turbocharged and in- tercooled versions for marine con- tinuous applications.

The fuel economy improvements are the result of a number of en- gineering developments by Detroit

Diesel Allison, including new tur- bochargers, unit fuel injectors, and a new airflow system, he said.

With the new system, the power required to drive the Roots type blower used in Detroit Diesel two- stroke cycle engines is signifi- cantly reduced as the engine reaches operating speeds. As that happens, the increased airflow from the turbochargers takes over the function of providing the intake air needed to maintain combustion and scavenging in the cylinders. A special valve takes the load off of the blower by equalizing the pres- sure on both sides of the rotors, re- ducing blower horsepower.

The new turbochargers and unit fuel injectors have been carefully tailored to match the needs of the new system for optimum fuel effi- ciency, Mr. Merrion explained.

Detroit Diesel series 149 en- gines have been popular with the commercial fishing industry for many years. Their high dependa- bility and continuing improve- ments in fuel economy and dura- bility have made them "a standard of the industry," according to Mr.

Merrion. (continued on page 18)

FERN5TRUI\A 13

ENGINEERED

KEEL COOLING

COMPLETELY

ASSEMBLED

R. W. FERNSTRUM S. COMPANY

MENOMINEE, MICHIGAN, U.S.A. 49858

Phone (906) 863-5553 • Telex 26-3493 • Answer Back: FERNSTRUM MNOM

R. W. FERNSTRUM & CO., EXPORT DEPT.

MENOMINEE, MICHIGAN, U.S.A. 49858

Phone: (906) 863-5553 • Telex 26-3493 • Answer Back FERNSTRUM MNOM

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A Complete Line

Of Heavy-Duty

Filter/Water

Separators for large diesel engines or equipment requiring continuous operation DAHL 300

Flow Rate 175 G.P.H 500BP for large diesel engines, storage facilities, island fuel pumps

Flow Rate: 1800 G.P.H. 300DB5

RECYCLER/

BLENDER

Flow Rate: 300 G.P.H.

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Convert waste diesel crankcase oil into fuel. Keeps storage tanks dean, extend service life of replaceable filter elements. 200MFV (manifold w/valves) 4 Flow Rate: 200 G.P.H.

Dahl's proven, superior patented design removes virtually 100% of the water and dirt!

DAHL Ask your local diesel parts or service house, or contact Dahl direct. Dealer inquiries invited: write Dept. HD.

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P.O. Box 5 Ceres, CA95307 (209) 538-1122 TELEX: 364412 INTR

July 15, 1983 Write 831 on Reader Service Card 13