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Wärtsilä 46F product guide - 174 Pages

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Catalogue excerpts

WÄRTSILÄ 46F PRODUCT GUIDE

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Wärtsilä 46F - Product Guide Introduction Introduction This Product Guide provides data and system proposals for the early design phase of marine engine installations. For contracted projects specific instructions for planning the installation are always delivered. Any data and information herein is subject to revision without notice. This 1/2013 issue replaces all previous issues of the Wärtsilä 46F Product Guides. Issue Several updates throughout the product guide W 14V46F and W 16V46F added, other minor updates Chapters Technical Data, Lubricating Oil System, Exhaust Emissions, Vibration and...

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Wärtsilä 46F - Product Guide Table of Contents

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Wärtsilä 46F - Product Guide Table of Contents 9.2 9.3

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Wärtsilä 46F - Product Guide This page intentionally left blank

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Wärtsilä 46F - Product Guide 1. Main Data and Outputs Main Data and Outputs The Wärtsilä 46F is a 4-stroke, non-reversible, turbocharged and intercooled diesel engine with direct fuel injection (twin pump). Cylinder bore Stroke Piston displacement 2 inlet valves and 2 exhaust valves Cylinder configuration clockwise, counter-clockwise on request Mean piston speed Maximum continuous output Table 1.1 Maximum continuos output Cylinder configuration The mean effective pressure Pe can be calculated using the following formula: where: Pe = mean effective pressure [bar] P = output per cylinder [kW] n...

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Wärtsilä 46F - Product Guide 1. Main Data and Outputs Reference conditions The output is available up to a charge air coolant temperature of max. 38°C and an air temperature of max. 45°C. For higher temperatures, the output has to be reduced according to the formula stated in ISO 30461:2002 (E). The specific fuel oil consumption is stated in the chapter Technical data. The stated specific fuel oil consumption applies to engines without engine driven pumps, operating in ambient conditions according to ISO 15550:2002 (E). The ISO standard reference conditions are: total barometric pressure relative...

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Wärtsilä 46F - Product Guide 1. Main Data and Outputs Dimensions and weights Figure 1.1 In-line engines (DAAE012051c) * Turbocharger at flywheel end All dimensions in mm. The weights are dry weights of rigidly mounted engines without flywheel. Table 1.2 Additional weights [ton]: Item Flywheel Flexible mounting (without limiters)

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Wärtsilä 46F - Product Guide 1. Main Data and Outputs * Turbocharger in flywheel end All dimensions in mm. The weights are dry weights of rigidly mounted engines without flywheel. Table 1.3 Additional weights [ton]: Item Flywheel Flexible mounting (without limiters)

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Below nominal speed the load must be limited according to the diagrams in this chapter in order to maintain engine operating parameters within acceptable limits. Operation in the shaded area is permitted only tem- porarily during transients. Minimum speed is indicated in the diagram, but project specific limitations may An automatic load control system is required to protect the engine from overload. The load control reduces the propeller pitch automatically, when a pre-programmed load versus speed curve ("engine limit curve") is exceeded, overriding the combinator curve if necessary. The engine...

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Wärtsilä 46F - Product Guide 2. Operating Ranges Loading capacity Controlled load increase is essential for highly supercharged diesel engines, because the turbocharger needs time to accelerate before it can deliver the required amount of air. Sufficient time to achieve even temperature distribution in engine components must also be ensured. This is especially important for larger engines. If the control system has only one load increase ramp, then the ramp for a preheated engine should be used. The HT-water temperature in a preheated engine must be at least 60 ºC, preferably 70 ºC, and the lubricating...

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Wärtsilä 46F - Product Guide 2. Operating Ranges 2.2.2 Diesel electric propulsion Figure 2.3 Maximum load increase rates for engines operating at nominal speed In normal operation the load should not be reduced from 100% to 0% in less than 15 seconds. In an emergency situation the full load can be thrown off instantly. The maximum deviation from steady state speed is less than 10%, when applying load according to the emergency loading ramp. Load increase according to the normal ramp correspondingly results in less than 3% speed deviation. Maximum instant load steps The electrical system must be...

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Wärtsilä 46F - Product Guide 2. Operating Ranges • Low air temperature In cold conditions the following minimum inlet air temperatures apply: • The two-stage charge air cooler is useful for heating of the charge air during prolonged low load operation in cold conditions. Sustained operation between 0 and 40% load can however require special provisions in cold conditions to prevent too low HT-water temperature. If necessary, the preheating arrangement can be designed to heat the running engine (capacity to be checked). For further guidelines, see chapter Combustion air system design.

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Wärtsilä 46F - Product Guide 3. Technical Data Technical Data Introduction This chapter contains technical data of the engine (heat balance, flows, pressures etc.) for design of auxiliary systems. Further design criteria for external equipment and system layouts are presented in the respective chapter. Separate data is given for engines driving propellers “ME” and engines driving generators “DE”. 3.1.1 Ambient conditions The heat balance is given for ISO standard reference conditions (25°C suction air and 25°C LT-water temperature). The heat rates are however affected by ambient conditions, especially...

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Wärtsilä 46F - Product Guide 3. Technical Data Cylinder output Engine speed Engine output Mean effective pressure Combustion air system (Note 1) Flow at 100% load Temperature at turbocharger intake, max. (TE 600) Temperature after air cooler, nom. (TE 601) Temp. after turbo, 100% load (TE 517) Temp. after turbo, 85% load (TE 517) Temp. after turbo, 75% load (TE 517) Temp. after turbo, 50% load (TE 517) Calculated pipe diameter for 35 m/s Exhaust gas system (Note 2) Heat balance at 100% load (Note 3) Jacket water, HT-circuit Pressure before injection pumps, nom. (PT 101) Flow to engine, approx. Max....

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