Page 87: of Maritime Reporter Magazine (June 1986)
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MHI Develops High-Pressure
Gas Injection DFD Engine —Literature Available
Mitsubishi Heavy Industries,
Ltd. (MHI) recently developed a high-pressure gas injection dual fuel diesel (DFD) engine, a next genera- tion engine for liquefied natural gas (LNG) carriers.
The new engine uses Boil-off Gas (BOG) generated while transporting
LNG as fuel to sharply cut down on fuel cost. It employs a high-pressure gas injection system that injects 250kg/cm2 gas into cylinders at the end of the compression process, achieving a high compression ratio unattainable by conventional DFD engines using low-pressure gas. The high compression ratio allows oper- ation at low cost and high output comparable to fuel oil burning en- gines.
The new DFD engine features an
MHI-designed electronic governor for fine-tuned control of the engine in accordance with changes in BOG generation in the LNG tanks and varying navigational conditions. It also has systems to monitor fuel burning in cylinders, the operation of fuel injection valves, and temper- atures and pressure of major parts for automatic troubleshooting in tandem with the electronic gover- nor. MHI has already confirmed the new engine's controllability, safety and performance through tests at its
Nagasaki Technical Institute.
At a demonstration held at the
Kobe Shipyard & Engine Works re- cently, the company used the 7RTA84M modified for gas/fuel oil dual burning only in the seventh cylinder. The 7RTA84M is the same type as the 7RTA84MDF planned for installation as the main engine on an LNG carrier to be assigned for the Australian North West Shelf
LNG Project.
For complete literature contain- ing further information,
Circle 54 on Reader Service Card
Free Four-Page Brochure
Offered On Acorn Platens
Acorn Iron & Supply Co., Phila- delphia, Pa., has made available a free four-page brochure titled "Pla- tenize Your Plant With Acorn Plat- ens." Acorn platens are described as semi-steel castings from 9 to 40 square feet, depending on size (mul- tiples available). The top surface and side ledges are machined to within .005-inch degree of flatness and each platen has 1 % -inch square holes, spaced 3V6 inches, center to center. These holes are used for clamping, dogging or spacing.
The brochure points out that used singly or in multiple groupings,
Acorn platens are standard equip- ment in many missile, electronic, robotics, aircraft plants, shipyards, railroads, pipe and steel fabricators, research laboratories, and wherever metal is formed, shaped or welded.
The publication contains draw- ings of a typical four-platen installa- tion, including Acorn stands. The stands are made from sturdy struc- tural steel members. They elevate the tops of platens to standard 30- inch height or other specified height (multiples available).
Tools and accessories illustrated include the tapered drift pin (10 inches long); gooseneck hold-down dog (hand-forged steel, 15-inch throat); special hold-down bolt and nut (with special forged head and washer); Acorn burning pyramid; bending post; platen vise; 45° and 90° horizontal clamp (with hard- ened screw, swivel cap and sliding handle); and arm clamp (with clamping screw, swivel cap, sliding handle, complete with special hold- down bolt, nut and washer).
An extensive list of industries, schools, etc., where Acorn platens are in use is given on the final page and includes such varied names as
Cities of New York, Miami and Cin- cinnati, Bethlehem Steel Co., Uni- versity of California, and G.
Schmidt Brewery of Philadelphia.
For a free copy of the brochure and further information on Acorn platens and tools,
Circle 83 on Reader Service Card
II "The Flying Dolphin" is the perfect combination of speed, safety & comfort:
THE ADVANCED M/S
KOLKHIDA" HYDROFOIL • World-wide service network • More powerful engines • Greater passenger capacity and overall space •Enhanced comfort • Better seaworthiness - with fully automatic lift control of the foil system
Length, m
Beam, m
Height above water, foilborne, m
Draft, foilborne, m
Main engine, hp(kW)
Speed, knots
Full load displacement, tons
Light displacement, tons
Passenger capacity
Range, nautical miles
Crew 34.5 10.3 10.8 1.9 2 x 1,430 (2 x 1,050) 35 68.8 52.3 140 250 5
Additional information can be obtained from the
U.S.S.R. Trade Representation Office in the U.S.A., or from:
V/0 SUD0IMP0RT 10 Uspenski Per. 103006Moscow, U.S.S.R.
Telephone: 299-02-14; 299-58-77; 251-05-05
Telex: 411272 SUDO SU; 411387 SUDO SU; 411443 SUD0 SU »«*bSl 117 f '• •
CROWLEY CHOOSES BERGER
Tow Pins - Stern Rollers
Crowley Maritime is well known for the rugged reliability of their tug boats under severe operating conditions. When they decided to update the latest additions to their fleet, they naturally chose Smith Berger stern rollers and tow pins.
Smith Berger
Marine, Inc. man- • ufactures a wide range of tow pins, pop up pins, stern rollers, and chain stoppers for tugs and work boats.
Almost any com- bination can be tailored to fit your needs.
Smith Berger Fair- leaders are the standard of quality around the world and now Smith
Berger tow pins and stern rollers are setting new standards of qual- ity and depend- ability for work boat deck gear.
Represented By:
Smith Berger Marine, Inc.
SHIPBOARD SYSTEMS & FISH PROCESSING EQUIPMENT 516 S.Chicago St., Seattle, WA 98108(206) 764-4650 Telex 32-8912
J.H. MENGE & COMPANY New Orleans, LA (504) 733-4871
H.J. WICKERT & COMPANY San Francisco, CA (415) 647-3500
LEBUS INT. ENG. LTD. Sittingbourne, Kent 011-44-795-75324
MARITIME EQUIPMENT, INC. Flemington, NJ (201) 782-0767
M.D. MOODY & SONS Jacksonville, FL (904) 737-4401
NISSHO-IWAI Rockefeller Center (Japan) (212) 730-2209
RASMUSSEN CO., INC. Seattle, WA (206) 762-3700
Circle 210 on Reader Service Card Circle 198 on Reader Service Card
June, 1986 87