Peter: re submarine fc applications
I believe there is an association between MTU and dbb
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MTU Press Release 24 Feb
First German Submarine with Hybrid Propulsion Plant now being built
KIEL
The first German submarine with a hybrid propulsion plant is presently being built by the Howaldtswerke Deutsche Werft AG (HDW) and the Thyssen-Nordseewerke GmbH (TNSW) yards under contract for the German Navy. The vessel is planned to enter service at the end of 2003, with three others completed by the end of 2006.
The 56-metre Class 212 submarine will have a fuel cell, apart from the MTU engine, battery and propulsion motor, integrated into the propulsion system. Enough energy can be produced with the fuel cell, without surfacing, to power the onboard electrical system when travelling at low speeds. The battery is therefore always at capacity and its energy is used, in contrast to conventional propulsion systems, only for peak speeds upon special demand. The building of the U212 has introduced a new chapter in submarine technology because, with a fuel cell, the submerged periods are notably lengthened. Regarding noise signature, the new propulsion technology offers advantages over conventional systems because of its functional principle. In addition, the low-temperature fuel cell works at an operating temperature of 70 to 80ø Celsius and is therefore difficult to detect by external heat sensors.
In order to fulfill the tactical operating parameters of a conventional submarine, the vessel has to offer large potential for sprint and braking modes which is only possible with a generous battery capacity. Charging the U212 battery still requires snorkel operation during which an exhaust-gas turbocharged MTU 16V-396 engine of 1050 kW (1428 HP) supplies electrical power for the battery, propulsion motor and on-board system.
In snorkel operation, the engine reacts without delay to fast changing operating conditions, at the same time having a favourable fuel consumption at constant speed and especially in part-load operation compared with mechanically supercharged engines.
The demanding requirements on submarines have not changed, however, despite the U212's new technology. The more than 130 MTU engines presently in submarines offer for their low weight a high power output, have long maintenance intervals and TBOs, are operationally reliable and can produce their full output despite high, strongly varying back pressure. They are partly non-magnetic in design or magnetically compensated and resiliently mounted against shock and structure-borne noise.
Your contact
MTU Friedrichshafen
Daniel Reinhardt
Telefon: (07541) 90 - 21 59
Telefax: (07541) 90 - 39 18
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more sub info on Page 3
ch2bc.org
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