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Ship Power Systems 2005 Wärtsilä offers the most effective solutions to all marine power and propulsion needs, supported by being the most responsive and efficient partner from first concepts throughout the lifetime of the vessel Table of Contents The Ship Power Supplier Environmental care .7 Two-stroke engines 10 Four-stroke engines .26 Dual-fuel engines 36 Pre-engineered propulsion packages 40 Generating sets 46 Auxiliary systems .54 Controllable pitch propellers 56 Fixed pitch propellers 58 Coastal and Inland Propulsion Systems (CIPS) 60 Nozzles 62 Efficiency rudder 63 Steerable thrusters 64 Propulsion solutions with waterjets 70 Transverse thrusters .74 Reduction gears 76 Propulsion control systems 80 Seals 83 Bearings 90 Lips - SNF (Special Non-Ferro) products 91 Wärtsilä Ship Power services 92 Wärtsilä Ship Power worldwide 94 The Ship Power Supplier Wärtsilä is the leading supplier of ship machinery, propulsion and manoeuvring solutions for all types of marine vessels and offshore applications Wärtsilä is the only company in its field with a worldwide service network able to take complete care of customers’ ship machinery at every lifecycle stage Wärtsilä ship power solutions are based on technological expertise, close customer co-operation and industry-leading innovations spanning the complete range of marine power and propulsion needs These solutions are customized to the specific ship design and operational requirements, ensuring maximum efficiency, reliability and environmental performance over the entire lifecycle of the installation Ship power systems overview Wärtsilä offers a wide range of innovative and industry-leading products from engines through the gearbox to the ship’s propeller and control systems With its comprehensive product portfolio and close customer support, Wärtsilä offers unparalleled freedom to tailor a complete ship power solution or more limited solutions from a single source supplier for any marine vessel or offshore application The Wärtsilä product portfolio covers the product names WÄRTSILÄ, SULZER, LIPS, DEEP SEA SEALS, JMT, AUXPAC and PROPAC n n n n n Two-stroke engines Four-stroke engines Generating sets Auxiliary systems Controllable pitch propellers n n n n n n n n n n Fixed pitch propellers Steerable thrusters Transverse thrusters Nozzles Jets Gears Propulsion control systems Rudders Seals Bearings Environmental care Wärtsilä’s solutions are customized to specific ship design and operational requirements to ensure maximum efficiency, reliability and environmental performance over the entire lifecycle of the installation Examples of Wärtsilä’s recent achievements in environmental care are RT-flex engines, dual-fuel engines for LNG carriers and environmentally friendly stern tube sealing systems IMO NOX regulation The Annex VI of the MARPOL 73/78 convention enters into force on 19 May 2005 All Wärtsilä and Sulzer diesel engines included in this booklet comply with the speed-dependent NOX limit Environmental concepts for two-stroke engines RT-flex Sulzer RT-flex engines offer distinct benefits to shipowners A clearly visible benefit is smokeless operation at all ship speeds Reduced running costs of Sulzer RT-flex engines derive from reduced maintenance requirements and lower part-load fuel consumption Precise control of injection, high injection pressures at low speed, and the sequential shut-off of injectors gives steady running at very low running speeds without smoking, down to 10-12% of nominal speed Particular attention has been given to making the RT-flex system reliable The common-rail concept also has inherent redundancy, adding to reliability and safety SCR SCR (Selective Catalytic Reduction) can reduce NOX emissions by 85-95% EnviroEngine for four-stroke engines Common rail Common-rail fuel injection technology keeps the fuel injection pressure high and constant over the entire load range, thus enabling operation without visible smoke over the whole operation field Superior operation is demonstrated at all speeds and loads The design of the common-rail system is optimized for new engines but it can also be retrofitted to existing engines Compressor Water injection Saturated air 70 90°C CASS The newest NOX reduction technology developed by Wärtsilä is called CASS – Combustion Air Saturation System The principle of CASS technology is to introduce pressurized water into the combustion process to reduce NOX formation The pressurized water is added to the intake air after the turbocharger The water evaporates immediately, due to the high temperature of the compressed air, and enters the cylinders as steam, thus lowering the combustion temperatures and the formation of NOX The NOX reduction is up to 50%, and the water consumption is about two times the fuel oil consumption DWI DWI (Direct Water Injection) can reduce NOX emissions by 50% In this system, water is injected under high pressure directly into the engine cylinders SCR SCR (Selective Catalytic Reduction) can reduce NOX emissions by 85-95% Gas engines with superior environmental performance Gas engines have low exhaust gas emissions due to the clean burning properties of natural gas and the high efficiency of the Wärtsilä gas engines The low carbon content in the natural gas also results in lower CO2 emissions Propulsion and seals The Efficiency Rudder Vessels can be supplied with an Efficiency Rudder to increase propulsion efficiency and improve steering characteristics The Efficiency Rudder features a fixed bulb attached to the rudder horn immediately behind the propeller The rudder blade can be equipped with a flap at its trailing edge to increase the lift generated by the rudder The bulb is removable to facilitate withdrawal of the tail shaft The HR nozzle The HR (high efficiency) nozzle differs from the conventional nozzle through a special rounded leading edge and S-shaped outer surface After introduction with small propellers (less than 3.5 m diameter) several hundred have since been applied to a wide variety of vessels Full-scale tests on several vessels indicate an improved bollard pull in the order of 7-10% This means an improvement of up to 13% in free-running conditions compared to a conventional nozzle CoastGuard and Airguard EnviroSeal Any oil loss to the environment from a ship's stern shaft sealing system is unacceptable Wärtsilä's EnviroSeals offer pollution-free sealing systems with a proven track record on all types of vessels The EnviroSeals are equally suited to retrofitting into existing standard seal installations or, as is now common, to be specified by owners for newbuildings The CoastGuard system is unique in that it enables all potentially polluting oil to be contained within the vessel using a double barrier, low-pressure void space The Airguard system, with its air-induced controlled pressure components, ensures the seal is a truly anti-pollution lip seal These sealing systems are now used on cruise ships, LNG carriers, containers, bulk carriers and many other vessel types to prevent both the leakage of bearing oil into the seaway and the ingress of water into the bearing system They ensure continuous operation between planned maintenance periods, with no unplanned dry-dockings for emergency repairs Two-stroke engines RTA48T-B RT-flex50, RTA50 RTA52U RT-flex58T-B, RTA58T-B RT-flex60C RTA62U-B RT-flex68-B, RTA68-B RTA72U-B RT-flex84T-D, RTA84T-D RTA84C RT-flex96C, RTA96C MW 10