Aces High Bulletin Board
General Forums => The O' Club => Topic started by: RTHolmes on September 30, 2009, 06:05:11 AM
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... all 1,556,002 of them :rock
(http://forums.bimmerclassics.com/attachments/bimmer-lounge/2078d1239645491-wartsila-sulzer-rta96-c-turbocharged-two-stroke-diesel-engine-engine-door.jpg)
The Wartsila-Sulzer RTA96-C turbocharged two-stroke diesel engine is the most powerful and most efficient prime-mover in the world today. The Aioi Works of Japan 's Diesel United, Ltd built the first engines and is where some of these pictures were taken. It is available in 6 through 14 cylinder versions, all are inline engines. These engines were designed primarily for very large container ships. Ship owners like a single engine/single propeller design and the new generation of larger container ships needed a bigger engine to propel them. The cylinder bore is just under 38" and the stroke is just over 98". Each cylinder displaces 111,143 cubic inches (1820 liters) and produces 7780 horsepower. Total displacement comes out to 1,556,002 cubic inches (25,480 liters) for the fourteen cylinder version.
Some facts on the 14 cylinder version:
Total engine weight: 2300 tons (The crankshaft alone weighs 300 tons.)
Length: 89 feet
Height: 44 feet
Maximum power: 108,920 hp at 102 rpm
Maximum torque: 5,608,312 lb/ft at 102rpm
Fuel consumption at maximum power is 0.278 lbs per hp per hour (Brake Specific Fuel Consumption). Fuel consumption at maximum economy is 0.260 lbs/hp/hour. At maximum economy the engine exceeds 50% thermal efficiency. That is, more than 50% of the energy in the fuel in converted to motion. For comparison, most automotive and small aircraft engines have BSFC figures in the 0.40-0.60 lbs/hp/hr range and 25-30% thermal efficiency range. Even at its most efficient power setting, the big 14 consumes 1,660 gallons of heavy fuel oil per hour.
:D
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when you have to build walkways around the sides of your engine it is definitely reaching epic levels... :eek:
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How they are starting up those thing?
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:O :O
Maximum torque: 5,608,312 lb/ft at 102rpm
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How they are starting up those thing?
One heck of a kick starter that needs a bunch of Japanese to jump on it. At least that is my experience with any two-stroke engines that have been made for anything larger than 500cc from Japan.
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My company just shipped some walkways and a exhaust and intake setup for a ship down in south america.
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How they are starting up those thing?
Usually they use compressed air to start them. I am not sure of that specific engine, But I have worked on some of a little smaller but still close in size that you keep the engine running and just shut down specific cylinders to work on them, and the crank case has hatches so you can crawl inside the engine to check bearings and oilers. that one looks like it has a oil sump though, the one I have worked on did not.\
more pics from Aioi Works
(http://i33.photobucket.com/albums/d59/irockurmomsocks/ATT00000.jpg)
(http://i33.photobucket.com/albums/d59/irockurmomsocks/ATT00004.jpg)
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I think someone is compensating for something.
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-wonders if NHRA has a class for that-
-wonders how long till someone puts it in a motorcycle-
-Frank aka GE
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-wonders how long till someone puts it in a motorcycle-
:lol
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Ive got a 16 foot trihull that needs a new inboard ...I wonder mmmmmmmmmmmm!
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when you have to build walkways around the sides of your engine it is definitely reaching epic levels... :eek:
It should make changing the spark plugs a bit easier :aok <BG>
Pipz
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I think I've done computer gaming for too long...
Looking at the picture, the first thing I thought of was Mechwarrior.
(http://uploads.theoldergamers.com/media/screenshots/Journo_Images/Mechwarrior/June_12_2009_Article/Mechwarrior5.jpg)
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I think I've done computer gaming for too long...
Looking at the picture, the first thing I thought of was Mechwarrior.
(http://uploads.theoldergamers.com/media/screenshots/Journo_Images/Mechwarrior/June_12_2009_Article/Mechwarrior5.jpg)
Warhammer vs an Atlas, that's a toughie.
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I think I've done computer gaming for too long...
Looking at the picture, the first thing I thought of was Mechwarrior.
(http://uploads.theoldergamers.com/media/screenshots/Journo_Images/Mechwarrior/June_12_2009_Article/Mechwarrior5.jpg)
You win! My first thought was Gundam
(http://mrlevilorenzyo.files.wordpress.com/2009/06/gundam_3_large-500x500.jpg)
followed by
(http://media.giantbomb.com/uploads/0/3564/413214-mechagodzilla_large.jpg)
That engine would be perfect for powering our defense against the zombie apocalypse.
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It should make changing the spark plugs a bit easier :aok <BG>
Pipz
Being a diesel it wouldn't have any spark plugs.
I do like the turbo charger that's larger than my house.
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Each cylinder displaces 111,143 cubic inches (1820 liters) and produces 7780 horsepower.
Oddly enough, the supercharged V8 Hemi nitromethane/methanol burning Top Fuel dragster engine has a displacement of 500 cubic inches, and generates 8,000HP. In the entire 60 seconds or so it runs between rebuilds, it burns approximately 8-11 gallons of nitromethane/methanol mix (95% nitromethane). Nitromethane costs approximately $3500 per 55 gallon drum. Total value of the engine itself, when every component is brand new, is about $50K.
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And I thought changing the headgasket on my Nissan Sentra was a b*tch!! :O
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Even at its most efficient power setting, the big 14 consumes 1,660 gallons of heavy fuel oil per hour.
That's a lot of bacon fat!
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Warhammer vs an Atlas, that's a toughie.
It's a screenshot from a trailer. Was actually a pretty good fight. :D
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It's a screenshot from a trailer. Was actually a pretty good fight. :D
Enlighten me as to the origin of this screen cap? I miss my mechs.
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Linky. (http://www.gamespot.com/pc/action/mechwarriorworkingtitle/video/6213261/mechwarrior-working-title-in-game-footage-video?tag=videos;title;1) There was one somewhere that had a developer breaking down all the features in the vid that are planned to be in the game, but I'm not sure where it is. It was posted on here before somewhere.
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Oddly enough, the supercharged V8 Hemi nitromethane/methanol burning Top Fuel dragster engine has a displacement of 500 cubic inches, and generates 8,000HP. In the entire 60 seconds or so it runs between rebuilds, it burns approximately 8-11 gallons of nitromethane/methanol mix (95% nitromethane). Nitromethane costs approximately $3500 per 55 gallon drum. Total value of the engine itself, when every component is brand new, is about $50K.
On Nitromethane prices.
http://www.competitionplus.com/index.php?option=com_content&task=view&id=6087&Itemid=6 (http://www.competitionplus.com/index.php?option=com_content&task=view&id=6087&Itemid=6)
The price of a 55-gallon barrel of nitromethane was $650 and immediately was raised to $900 with the cost expected to climb to $1,400 before the season’s end. Homeland Security was cited as a reason for the increase although a call to the Homeland Security Department by CompetitionPlus.com refuted the claim.
As this scenario played out, Schumacher procured another Chinese source of nitro and had a tanker of the fuel en route to the United States when the NHRA implemented a rule stating only the brands under exclusivity to VP Race Fuels were approved sources.
The NHRA eventually capped the price at $800 in 2004.
The Pro Nitro brand was declared the official source of nitromethane on the IHRA tour and this product was sold for $650. Many racers began to question the difference in price for an equal in quality product which was used largely by NHRA teams in testing.
The second skirmish between the official supplier and Pro Nitro transpired in 2006 when many teams covertly ran the lesser expensive source of nitro until a handful of those teams were put on secret probation when the number of runs they made in competition didn’t jibe up with receipts from the official supplier.
VP Race Fuels defended the exclusivity as protecting the sport’s only domestic supplier of nitromethane – Dow-Angus. Dow-Angus announced in November of 2006 they were ceasing production of nitromethane for racing leaving the only known source as the Chinese brand.
Last year, VP Race Fuels raised the price of nitromethane to $950 during the NHRA U.S. Nationals race weekend.
With the advent of U.S. Department of Homeland Security regulations, a drum of nitromethane was reduced to 42-gallons or 400 pounds while the price remained the same $950 for a lesser amount of product.
Citing Homeland Security and the need for an armed guard as well as increased paperwork, the price was launched to $1,250 per barrel. The paperwork according to Schumacher requires 15 – 20 minutes and the armed guard was only used during the evening hours of the NHRA Gatornationals last month. There was no added security during the daylight hours.
The price reportedly has been dropped to $1,050 according to ESPN2 coverage of the event.
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Still expensive toejam
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I work on a Top Fuel car (low budget privateer) part time. Last year, at times, we paid $3500 for a drum, because there wasn't even enough to go around. Yeah, it's back down, and it was only there for a while, but we also paid $1500 a drum for 2-3 months.
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...no substitute for cubic inches... ...RTA96-C turbocharged two-stroke diesel....
Engineers disagree with you. ;)
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No substitute... except forced induction. :D
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Oddly enough, the supercharged V8 Hemi nitromethane/methanol burning Top Fuel dragster engine has a displacement of 500 cubic inches, and generates 8,000HP.
The big difference between the two (and I'm sure you already know this) is the torque generated. Torque is really the only important number when you're moving a big container ship. And since hp is really just a product of torque and rpm, those big loping cylinders (never thought I'd ever say that for a two-stroke) won't turn around fast enough to get the same kind of mind blowing number as the torque they put out.
Good shtuff, thanks for posting. I still can't get over the size of that turbo, never mind the fact that its a two-stroke. I suppose the two-stroke design is simpler, which is helpful when you're making something that big. I just always think of screaming dirt bike engines when it comes to two-strokes.
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Wärtsilä-Sulzer is Finnish not Japanese, though their marine engines are produced on license elsewhere. Interestingly it's a two-stroke.
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The last 2 stroke i sat on was a KH-125 and it blew up when i ran her at 80mph down a dual carriage way. :mad:
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I Have a 52' commercial boat now and it has a pair of small cummins two stroke turbo diesels. Great engines and very simple. pre 1970s two stroke diesels were very common in boats. They changed over to four stroke because two strokes were very prone to "runaway" :rock
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Does anyone have any good links or care to explain how a two-stroke diesel works? I can't find anything and when I think about how a diesel works and then how a two-stroke works I just can't put the two together. :(
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It would work like a two-stroke gasoline engine. The heavy fuel oil is a lubricant in itself. It just uses higher compression to detonate the fuel-air mix instead of a spark plug. In the Wärtsilä-Sulzer I believe the cylinders work in pairs; one cylinder compressing the fuel-air mix of the other cylinder. Basically having cross-feed transfer ports.
http://www.youtube.com/watch?v=NBiJBw0tp7U
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http://www.youtube.com/watch?v=jXHvY-zY9hA
Impressive.
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Ahhh, I remember seeing that episode.
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Being a diesel it wouldn't have any spark plugs.
I do like the turbo charger that's larger than my house.
Ehhhh it was a joke......................... ...... <G>
Pipz
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Thanks diehard. I was kinda leaning that way because I knew the fuel/air mixture had to go through the crankcase for lubrication. I just didn't really know that you could build a diesel without the fuel injection. Obviously crankcase pressures aren't high enough to cause detonation.
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Many, Many years ago I tagged along with a friend to our local drag strip, (car drag strip that is). He was into drag racing, but I had little interest except for the beer that they sold. We were in the pit area and he was talking to a couple of the owners and the question of engine size was being discussed. I remember one of the owners making this comment, and I have no idea why I remembered it for so many years. "The only substitute for cubic inches is cubic money".
Fred
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The only substitute for cubic inches is cubic money
:lol
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As for two-stroke diesels...
Detroit diesel made 2 strokes for years for road use... the 6V92.
A lot of city buses used them..a very disdinctive exhaust note.
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Technically speaking,most RC plane engines are 2 stroke diesels,tho they dont burn diesel fuel!
IIRC the germans use a 2 stroke diesel engine in 1 of their A/C,I think it was designed to burn a coal based fuel.
:salute
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It was the Ju-86 high altitude recon plane. Most if not all German aviation fuel was coal-based Fischer-Tropsch synthetic fuel.