Page 18: of Maritime Reporter Magazine (July 1984)

Diesel Power

Review—Bergen (continued from page 19)

This insures an essential safety margin if the viscosity control sys- tem were to fail.

Brown Boveri turbochargers, type VTR series 1, are in general use for all Bergens K-type en- gines. The charging system is based on the impulse principle, as this is considered to be the best, both with respect to the engines' ability to cope with shock loading, and be- cause it gives greater air flow rates at part load than the con- stant-pressure system. At part load, ample quantities of air are essen- tial to insure complete combustion of heavy oil; the low frictional losses of the turbocharger (ball bearings) also help here.

For the 8- and 16-cylinder en- gines, pulse converters are em- ployed. This normally results in widely varying exhaust gas tem- peratures for the individual cylin- ders, but this is avoided on K en- gines with the help of a specially shaped exhaust gas system.

BMW OF NORTH AMERICA

Circle 13 on Reader Service Card

BMW (Bavarian Motor Works) the German automobile, motorcy-

The Tri-FeatureACDL Series" New Technology from Daihatsu.

Daihatsu Diesel Engines—a stroke ahead.

DAiHATSUlDAIHATSU DIESEL (USA), INC.

SPARE PARTS, ENGINEERING SERVICE FOR DAIHATSU ENGINES 180 Adams Avenue, Hauppauge, NY 11788 DAIHATSU DIESEL MFG. CO., LTD.

Telex' ITT 4758191 DAIHAT Ul Osaka. Tokyo, London. Singapore. Sidney, Jakarta

Phone: 516-434-8787/8788/8789 cle, and engine manufacturer, has set its sights on an expanding share of the future marine market in the U.S. The American marine division, BMW of North America, is located in Montvale, N.J.

BMW's turbocharged sterndrive diesel, designated the D-190-S, is being installed in increasing num- bers in many of America's mid-size boats. This rugged, precision-built power plant is a 190-bhp, six- cylinder in-line diesel. Weighing just 1,061 pounds, the compact unit provides responsive power quietly throughout its speed range.

The turbocharger forces extra volumes of air into the cylinders to mix with a larger fuel charge, cre- ating additional power. The com- bustion process is efficient and the engine runs smoothly. The in- creased air flow keeps tempera- tures lower, and the manifold is water-jacketed to keep the temper- atures relatively constant, contrib- uting to longer engine life. An ex- ceptionally large air filter helps keep sound levels low.

The D-190-S features BMW's double-circuit cooling system, in which the heat exchanger, oil cooler, and expansion tank are completely integrated as a single entity. This is a further contribu- tion to its low weight and high power-to-weight ratio.

BOYCE MACHINERY

Circle 43 on Reader Service Card

Jerry T. Boyce, executive vice president of sales and marketing for Boyce Machinery Corporation, has announced the introduction of a new concept in engine service packages for Caterpillar engine owners in South Louisiana. The new packages will be marketed as

Diesel Engine Maintenance and

Repair Options. The Boyce pro- gram is a systematic approach to reduce costs and increase engine life through proper preventive maintenance.

Options range from a diesel tune- up to a complete engine over- haul, or Boyce-Built (remanufac- tured, rebuilt, or exchange) engine.

Boyce starts with a repair deter- mination inspection and recom- mends an option that is best matched to the condition of the en- gine. The company currently has programs available for the Cat

D399, D398, D379, D353, 3306, and 3208 model engines, and is working on plans for the 3304, 3406, 3408, and 3412 models.

All options carry the full Boyce warranty, guaranteed prices, and guaranteed turnaround time. Well- defined options reduce costs, save time, avoid over-repair, and ena- ble engine owners to schedule work.

Boyce Machinery is South Loui- siana's Caterpillar and Pettibone dealer, with branches in New Or- leans, Baton Rouge, Lafayette,

Morgan City, Lake Charles, and

Reserve.

In response to modern demands for fuel conservation, Daihatsu has developed the DL Series Tri-Feature Diesel Engine. The DL Series is designed for improved combustion efficiency at low load, easier start-up and higher durability, with future fuel trends also taken into consideration.

All these characteristic improvements are test verified. 20 Circle 198 on Reader Service Card Maritime Reporter/Engineering News