Machines | Marine Diesel Engine (K98MC)
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Most modern ships use a reciprocating diesel engine as their prime mover, due to their operating simplicity, robustness and fuel economy compared to most other prime mover mechanisms. The rotating crankshaft can be directly coupled to the propeller with slow speed engines, via a reduction gearbox for medium and high speed engines, or via an alternator and electric motor in diesel-electric vessels. The rotation of the crankshaft is connected to the camshaft or a hydraulic pump on an intelligent diesel. The reciprocating marine diesel engine first came into use in 1903 when the diesel electric rivertanker Vandal was put into service by Branobel. Diesel engines soon offered greater efficiency than the steam turbine.
Comments
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"...it moves the Titanic-sized ship..." Um, The "Titanic" would have looked like a tug next to this ship!
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why fuel consumptions in tons?
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nice
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Great! Maybe turbocharged Zhou Engine will replace
this diesel engine. The former is far smaller and higher thermal efficiency. Please
see https://www.linkedin.com/pulse/primary-design-example-turbocharged-zhou-engine-vs-wartsila-zhou?published=t -
Comushing is not a expolosjon,
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Lj
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But can it fit in my Honda?
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I like all vids about technology or mechanic, why this video has only 1 like and 90 dis - like ?
I make the 2 like!😆 -
Hola amigo, una pregunta, tienes el video con subtitulos en español? me lo podrias pasar o subir a youtube?
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K
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hi Andrew Rai. I see your point, however a typical semi diesel operates at a crankshaft speed of 2500 rpm max. with max torque at about 1600 to 1800 rpm. An engine like the BW/M.A.N typically operates at a crank speed of 95 rpm. and produces enormous torque wich is what's needed in a massive marine propulsion engine. To achieve a similar amount of torque from a high reving engine, you would probably need 500.000 HP. This is of course only playing with numbers as it is not practically possible to achieve this enormous amount of torque using high speed diesels. also, a semi has a gear box with reductions and multiple gears (speeds) to convert HP to torque, a marine propulsion engine like the BW/M.A.N does not have a reduction gear box, but is coupled directly to the massive propeller. A bit like trying to get your semi to move and drive in top gear. also a marine propulsion engine in a container ship clocks up hours equal to 3.000.000 Km per year. For this application there is no alternative to the massive, high torque slow speed monster.
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hi Andrew Rai. I see your point, however a typical semi diesel operates at a crankshaft speed of 2500 rpm max. with max torque at about 1600 to 1800 rpm. An engine like the BW/M.A.N typically operates at a crank speed of 95 rpm. and produces enormous torque wich is what's needed in a massive marine propulsion engine. To achieve a similar amount of torque from a high reving engine, you would probably need 500.000 HP. This is of course only playing with numbers as it is not practically possible to achieve this enormous amount of torque using high speed diesels. also, a semi has a gear box with reductions and multiple gears (speeds) to convert HP to torque, a marine propulsion engine like the BW/M.A.N does not have a reduction gear box, but is coupled directly to the massive propeller. A bit like trying to get your semi to move and drive in top gear. also a marine propulsion engine in a container ship clocks up hours equal to 3.000.000 Km per year. For this application there is no alternative to the massive, high torque slow speed monster.
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The history of ships is incomplete. what would happen if this ship was closely connected to 20 others?????????????????????????????
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Lions Gate Bridge ship, owner Kaisha Kawasaki, built by Hyundai, As I type this, the ship is in the east China sea, having just completed a voyage from Long Beach, CA,USA to Shanghai, China. It is currently underway travelling 8.4 Kn. It is pulling 9.6 meters of draft. The ship is spec'd at 14.3 meters draft, so she's ridin' high. Google the name " Lions Gate Bridge".
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I'm gonna call bullshit here. Diesel V/S boilers and steam turbines? Not so sure diesel better. I was Navy in the 60's Keel was laid on my ship in '46. Bigtime HP. Oil fired boilers, 4 of them, burn anything from crude to aircraft gasoline. Firebox temp 960 deg+, steam pressure produced, 1250lb/sq in plus, Feed pipe to the turbine 3 ft dia. Ya, 4 boilers, 4 turbines, 4 20 ft dia 4 bladed props. OK, really big reduction gears. Prop that big don't hafta turn a lotta rpm to move a 610 ft ship really fast. 900 rpm or so. Like the diesel got one prop. With about the same power as one of the 4. maybe the same top speed.........without the maneuverability or the acceleration. Just saying, newer is not necessarily better. Diesel requires fuel that the steam boiler didn't need the refinement. My ship would run on oil the diesel would choke on.
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200 times more powerful then a semi! That does not seem much! A semi engine is less then a ton, so that should make its weight a bit below 200 tones, but it looks a lot bigger. I would think it should be a lot more powerful then just 200 semi engines
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But how is it started?
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What the f** is a sem-eye??
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How do they stop one cylinder?
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these engine could burn up to 82,000 gals a day. How that on global warming?