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16 cylinders—with ratings rang- ing from 1,375 to 3,600 bhp. GEORGE ENGINE Circle 69 on Reader Service Card As much as an 11.5-percent re- duction in fuel consumption can be realized by George Engine Com- pany's "bypass operation"—the upgrading of a Detroit Diesel 149 series engine from its normally as- pired (NA) configuration to a tur- bocharged, intercooled, blower-by- pass (TIB) configuration using the latest high-tech components from Detroit Diesel. Fuel savings pro- vide a rapid payback of the cost of the conversion. The blower-bypass is a simple butterfly valve arrangement that automatically diverts the incom- ing combustion air around the Roots blower when turbocharger boost has reached a sufficient level. With the Roots blower bypassed, it no longer imposes an accessory load on the engine; the horsepower that was previously required is now available at the flywheel to do useful work. With a smaller fuel injector, the TIB configuration produces the same horsepower at the same rpm as the NA arrangement, but does it with significantly less fuel. Al- ternatively, the owner may elect to use larger injectors to achieve greater horsepower output, but still at a competitively low specific fuel consumption figure. HITACHI ZOSEN Circle 68 on Reader Service Card In response to what it sees as the need for an integrated ap- proach to saving energy, Hitachi Zosen has performed comprehen- sive research toward the realiza- tion of more fuel-efficient ships. As a result, Hitachi now offers an in- tegrated energy-saving package consisting of four independent sys- tems: improvement of hull per- formance; improvement of main propulsion plant; application of ef- ficient measures for the machinery plant; and optimization of naviga- tion and maneuverability fea- tures. These systems may be applied independently, in combination, or as an integrated, total energy-saving system. Among the items that may be included in the Hitachi package are the HZ bulbous bow; self-polishing type coatings; low-rpm, large-size pro- peller mounted in HZ nozzle; super- long-stroke, low-speed main en- gine; shaft generator; and 2- or 3- stage, pressure-type exhaust gas economizer. KHD Circle 76 on Reader Service Card A range of weight- and cost-sav- ing diesel engines has been devel- oped by Deutz Engines Ltd., Brit- ish subsidiary of Klockner- Humboldt-Deutz AG, in which new technology has made them safely January 15, 1984 operable well within Zone 2 mini- mum requirements, without the need for purge-pressurized enclosures. Until recently, only a few small diesels have ever been adapted to operate free-standing in a Zone 2 environment, and these were ex- tensively customized to suit par- ticular applications. With this lat- est KHD development, it is now possible for Deutz 816 diesel en- gines in a variety of sizes and con- figurations with outputs ranging from 120 to 870 kw (163 to 1,180 bhp) to be operated safely in areas outside the protection of specially designed, purge-pressurized enclo- sures. The Deutz 816 series is avail- able as a package adapted for Zone 2, which calls for a maximum sur- face and gas temperature of 250 C. Deutz has gone beyond this re- quirement, with a maximum tem- perature of 180 C. Development of the 816 to Zone 2 standards was carried out in re- sponse to a growing demand from oil companies. Building a purge- pressurized enclosure is costly, im- posing a weight penalty and cre- ating problems of accessibility to the engine. In adapting the 816, Deutz (continued on page 32) Production systems lor ships, barges ana offshore structures. DWB ship transfer system. Panel line at Bath Iron Works. If you Ve looking for productivity, you should talktoTTS. ITS specializes in solutions that offer immediate increases in productivity for your yard. Shotblast and paint lines. Panel lines. Beam lines for N/C cutting and marking of stiffeners. Heavy lift and ship transfer sys- tems. Material handling systems. Proven, flexible, custom-designed to suit any size shipyard, any existing facility. Give us your particular production prob- lems. Let us propose how to reduce material handling costs, mechanize production and increase productivity We are just a phone call away TOTAL TRANSPORTATION SYSTEMS INC. 813 Forrest Drive PO. Box 6127 Newport News, Virginia 23606 Telephone: (804) 595-5153 TWX 710-880-0003. NEWPORT NEWS • LONDON • BERGEN • OSLO • HALIFAX Circle 179 on Reader Service Card 31 Beam line.
