The 14-cylinder version first entered commercial service in September 2006 aboard the Emma Mærsk. The design is similar to the older RTA96C engine, but with common rail technology (in place of traditional camshaft, chain gear, fuel pump and hydraulic actuator systems). This provides maximum performance at lower revolutions per minute (rpm), reduces fuel consumption and emits lower levels of harmful emissions.
The engine has crossheadbearings so the always-vertical piston rods create a tight seal under the pistons. Consequently, the lubrication of the engine is split: the cylinders and the crankcase use different lubricants, each being specialised for its designated role. The cylinders are lubricated by continuous timed injection of consumable lubricant, formulated to protect the cylinders from wear and to neutralise the acids formed during combustion of the high-sulfur fuels commonly used. The crosshead design reduces sideways forces on the piston, keeping diametral cylinder liner wear down to about 30 μm per 1000 hours.[1]
As a piston descends, it compresses incoming combustion air for the adjacent cylinders. This also serves to cushion the piston as it approaches bottom dead centre, thereby removing some load from the bearings. The engine is uniflow-scavenged by way of exhaust valves that are operated by electronically controlled hydraulics, thus eliminating the camshaft.
As of 2006,[needs update] more than 300 RT-flex96C engines and older RTA96C engines were in service or on order.[2]
^ ab(PDF). Wärtsilä. 2004. p. 23. Archived from the original on December 26, 2005.{{cite web}}: CS1 maint: unfit URL (link)
External links
Wärtsilä.com
Wärtsilä RT-flex96C / RTA96C
, Todd Walke
Gallery of 8 images
January 06, 2023
wärtsilä, sulzer, rta96, wärtsilä, flex96c, stroke, turbocharged, speed, diesel, engine, designed, finnish, manufacturer, wärtsilä, designed, large, container, ships, that, heavy, fuel, largest, cylinder, version, meters, high, meters, long, weighs, over, tonn. The Wartsila RT flex96C is a two stroke turbocharged low speed diesel engine designed by the Finnish manufacturer Wartsila It is designed for large container ships that run on heavy fuel oil Its largest 14 cylinder version is 13 5 meters high 26 59 meters long weighs over 2 300 tonnes and produces 80 08 megawatts The engine is the largest reciprocating engine in the world RT flex96COverviewManufacturerWartsilaProduction2006 presentLayoutConfigurationTwo stroke straight 14Cylinder bore96 cm 38 in Piston stroke2 50 m 98 in RPM rangeRedline120CombustionTurbochargerSingleFuel typeheavy fuel oilOutputPower output80 080 kW 107 390 hp DimensionsLength26 59 m 87 2 ft Height13 5 m 44 ft Dry weightover 2 300 tonsThe 14 cylinder version first entered commercial service in September 2006 aboard the Emma Maersk The design is similar to the older RTA96C engine but with common rail technology in place of traditional camshaft chain gear fuel pump and hydraulic actuator systems This provides maximum performance at lower revolutions per minute rpm reduces fuel consumption and emits lower levels of harmful emissions The engine has crosshead bearings so the always vertical piston rods create a tight seal under the pistons Consequently the lubrication of the engine is split the cylinders and the crankcase use different lubricants each being specialised for its designated role The cylinders are lubricated by continuous timed injection of consumable lubricant formulated to protect the cylinders from wear and to neutralise the acids formed during combustion of the high sulfur fuels commonly used The crosshead design reduces sideways forces on the piston keeping diametral cylinder liner wear down to about 30 mm per 1000 hours 1 As a piston descends it compresses incoming combustion air for the adjacent cylinders This also serves to cushion the piston as it approaches bottom dead centre thereby removing some load from the bearings The engine is uniflow scavenged by way of exhaust valves that are operated by electronically controlled hydraulics thus eliminating the camshaft As of 2006 needs update more than 300 RT flex96C engines and older RTA96C engines were in service or on order 2 Contents 1 Technical data as of 2008 2 See also 3 Notes 4 References 5 External linksTechnical data as of 2008 EditConfiguration Turbocharged two stroke diesel straight engine 6 to 14 cylindersBore 960 mm 38 in Stroke 2 500 mm 8 2 ft Displacement 1828 7 litres 111 597 CI per cylinderEngine speed 15 102 RPM 3 Mean effective pressure 1 96 MPa full load 1 37 MPa maximum efficiency 85 load Mean piston speed 8 5 meters per secondBrake specific fuel consumption 171 g kW h 3 a Power Up to 5 720 kW per cylinder 34 320 80 080 kW 46 020 107 390 bhp totalTorque Up to 7 603 850 N m 5 608 310 lbf ft 102 rpmPower density 29 6 34 8 kW 39 7 46 7 bhp per tonne 2300 tonnes for the 14 cylinder versionMass of fuel injected per cylinder per cycle 160 g 5 6 oz full load Whole engine uses up to 250 tons of fuel per day Crankshaft weight 300 t 660 000 lb 1 Piston weight 5 5 t 12 000 lb Piston height 6 m 20 ft See also EditForced induction History of the internal combustion engineNotes Edit 85 load R2 operating point max speed lowest powerReferences Edit a b Hanlon Mike Most powerful diesel engine in the world GizMag Accessed 24 February 2011 The world s most powerful Engine enters service Press release Wartsila Corporation 2006 09 12 a b RTA C Technology Review PDF Wartsila 2004 p 23 Archived from the original on December 26 2005 a href Template Cite web html title Template Cite web cite web a CS1 maint unfit URL link External links EditWartsila com Wartsila RT flex96C RTA96C The Most Powerful Diesel Engine in the World Todd Walke Gallery of 8 images Retrieved from https en wikipedia org w index php title Wartsila Sulzer RTA96 C amp oldid 1126559197, wikipedia, wiki, book, books, library,