Caterpillar Announces Two Improved Diesels —Free Brochure Available

At the recent Fish Expo in Boston, Caterpillar Tractor Company's Engine Division announced two improved models in its marine diesel engine line. One is a new, direct-injection configuraof the well-accepted turbocharged and aftercooled 3412 marine engine.

The direct-injection 3412 DITA version is said to offer some 8-10 percent increased fuel efficiency compared with the precombustion chamber 3412 model.

Higher torque rise, greater operating range, and reduced heat rejection are also features of this new configuration. Approved ratings include 520 bhp (388 kw) continuous and 625 bhp (466 kw) medium-duty commercial at 1,800 rpm. The matched Cat 7221 and 7231 marine transmissions are offered for the continuous rating, with the 7231 offered for the medium-duty commercial rating.

The 3412 DITA is designed primarily for medium to large fishboats (75-95 feet), inland towboats, and offshore utility vessels.

With its attractive fuel economy, fishboat owners wanting higher horsepower will find the 3412 DITA and matching marine transmission a logical choice.

The second improved model announced by Caterpillar is the turbocharged 3208 T diesel, which is replacing the c u r r e n t v e r s i on 3208. Significant component improvements are said to be engineered into the compact, lightweight V8 diesel to extend its application to all levels of commercial propulsion service. Ratings for the 3208 T include 260 bhp at 2,800 rpm for light-duty commercial, 230 bhp at 2,400 rpm for medium-duty commercial, and 200 bhp at 2,400 rpm continuous.

Cat says the 3208 T provides the best power-to-weight ratio and largest displacement of any engine in its horsepower range.

The weight of the engine and Twin Disc MG507 transmission is only 2,320 pounds. Displacement of the compact, 90-degree, V8 f o u r - c y c l e diesel is 636 cubic inches (9.4 liters). The engine is equipped with a rear-mounted, water-cooled turbocharger with single exhaust outlet. Physical dimensions and connection points are the same as the current turbocharged 3208.

For further information and free literature on these two new Caterpillar engine models, Write 38 on Reader Service Card

Maritime Reporter Magazine, page 26,  Jan 1981 John L. Torresen

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.