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Wärtsilä-Sulzer RTA96-C and anything related to its purposes and tasks. This is not a forum for general discussion of the article's subject. |
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The bore and stroke are listed in hundreds of millimeters. I am absolutely positive this is incorrect but do not know where to find authoritative data. Would someone mind taking a look into this and confirm it is supposed to be cm? — Preceding unsigned comment added by 198.24.243.122 ( talk) 15:17, 15 September 2015 (UTC)
Is the Wärtsilä-Sulzer RTA96-C used with direct drive or something else (gearbox? electric transmission?)? njh 06:46, 15 February 2006 (UTC)
Slow speeds, direct drive, Modern Marine Engineering =-) You are partially incorrect about the fixed pitch propellor. Many modern ships used a controllable pitch propeller, allowing the engine to be run at its most efficient speed, and the propeller blades are adjusted in accordance to bridge commands. You are correct about direct drive though, this extremely slow speed of the engine also allows for the long, slow burn that crude marine fuels require. Marine Diesel fuels are getting heavier and heavier (the cracking process in refining which gets the lighter distillate fuels, such as gasoline and kerosene out, is getting "better and better", meanwhile what's left over once that is done is often burned by the Maritime Industry - anywhere else and environmentalists would cry foul...out of sight out of mind). Hengineer 07:16, 18 March 2007 (UTC)
LARGE commercial ships powered by engines like this one don't have CPPs, nobody can make such propellers powerful/large enough. IIRC the largest CPP is <40MW. We are talking about sizes like this. 80.218.218.68 19:50, 18 March 2007 (UTC)
How is this engine started? Pneumatically?
RTA96-C : what are the (a) compression ratio, (b) maximum compression pressure and firing prressure at full load?
Regards
Ritinkar Sen
I have troubles to believe, that the engine is really started by compressed air because the small electric motor left to the flywheel in this picture
http://people.bath.ac.uk/ccsshb/12cyl/rta96c_crank.jpg
looks perfectly like a starting device to me. If the engine is really started with compressed air, what purpose have the gearwheel teeth of the flywheel? Do they drive alternators?
Regards,
euphras
It is started by compressed air. The small electric motor is to turn the engine to carry out maintenance or position pistons etc and the motor drives the flywheel through reduction gears. That's why you see teeth on the flywheel.
oi...Modern Marine Diesel Engines are started by Compressed air admitted to each cylinder in the same order as the firing sequence. Smaller engines are usually started by a small hydraulic or pneumatic motor (even smaller by electric motor). The above person is correct, usually called the "turning gear", that small motor has been in existence since the old steam days. Basically any time maintenance or engine inspections are performed, the turning gear is used to slowly rotate the engine (slowly in that the gearing allows for a smaller motor to be used, at the same time lowering the RPM of shaft speed @ turning gear speed. Hengineer 07:08, 18 March 2007 (UTC)
-- Ritinkarsen 12:06, 23 June 2006 (UTC)…-- Ritinkarsen 12:06, 23 June 2006 (UTC)I'd say it's a 14 cylinder engine in the picture...
there is no 14 Cylinder version yet.. i don't think it wil come in this type anyway
If you look at the photos from Hyundai plant, you will see that the 14-cylinder is actually a 8 + 6 cylinder engines manufactured in one piece, it's obvious from the crankshaft. It makes sense to make it that way for the torque distribution over the crankshaft. — Preceding unsigned comment added by 90.64.17.186 ( talk) 06:03, 13 October 2018 (UTC)
Wärtsilä has changed the name of this engine into Wärtsilä RT-Flex, do we have to change the name also ??
Main and only reason why all big engines have crosshead is because of huge masses in motion and extreme side forces which will destroy cylinder liner after few hours in operation if engine does not have crosshead bearing. As it is, crosshead bearing take those forces and pisron, rings, and liner are not affected by them. Due to distance from crancase, lubrication of liner must be provided with a pump, not by splashing, and that is reason for additional lubricating system. Comment in article is completly false. -- Billy the lid ( talk) 09:36, 10 January 2008 (UTC) some trunk piston engines also have addtitional piston lubrication .wdl 24.146.23.84 ( talk) 15:30, 10 October 2008 (UTC)wdl
Actually, these engine have no choice but to have crossheads. Their strokes are so long that connecting rod and crank will overlap with the liner. Just remove the crosshead and see where is the crankpin when the piston is at TDC and how wide the connecting rod will travel when piston moves down to BDC from TDC. Rgds/Rajesh —Preceding unsigned comment added by 203.116.194.131 ( talk) 11:10, 19 January 2011 (UTC)
Can we get a photo or two of this thing for the article? I read the description of a 5-story tall engine and, well, I want to see it. LOL -- Ragemanchoo ( talk) 02:27, 5 June 2008 (UTC)
Where does the figure, "~160 grammes @ full load", come from? According to the Wärtsilä website the fuel consumption at full load is over 170 g/kWh. Tupsumato ( talk) 14:02, 7 October 2010 (UTC)
This article describes two different engines in a manner that may mislead and confuse the reader. Wärtsilä-Sulzer RTA96C (there is no hyphen) has an injection pump, overhead cam and all other things of a traditional diesel. Wärtsilä-Sulzer RTA-flex96C, however, doesn't have all that. It's a common-rail engine. Somebody fix this. Le Grand Bleu ( talk) 18:43, 26 May 2015 (UTC)
Doesn't Common Rail only refer to the fuel injection system, and NOT to some of the other mechanical items mentioned? Oceanic84 ( talk) 17:15, 16 February 2023 (UTC)
This is the
talk page for discussing
Wärtsilä-Sulzer RTA96-C and anything related to its purposes and tasks. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||
|
The bore and stroke are listed in hundreds of millimeters. I am absolutely positive this is incorrect but do not know where to find authoritative data. Would someone mind taking a look into this and confirm it is supposed to be cm? — Preceding unsigned comment added by 198.24.243.122 ( talk) 15:17, 15 September 2015 (UTC)
Is the Wärtsilä-Sulzer RTA96-C used with direct drive or something else (gearbox? electric transmission?)? njh 06:46, 15 February 2006 (UTC)
Slow speeds, direct drive, Modern Marine Engineering =-) You are partially incorrect about the fixed pitch propellor. Many modern ships used a controllable pitch propeller, allowing the engine to be run at its most efficient speed, and the propeller blades are adjusted in accordance to bridge commands. You are correct about direct drive though, this extremely slow speed of the engine also allows for the long, slow burn that crude marine fuels require. Marine Diesel fuels are getting heavier and heavier (the cracking process in refining which gets the lighter distillate fuels, such as gasoline and kerosene out, is getting "better and better", meanwhile what's left over once that is done is often burned by the Maritime Industry - anywhere else and environmentalists would cry foul...out of sight out of mind). Hengineer 07:16, 18 March 2007 (UTC)
LARGE commercial ships powered by engines like this one don't have CPPs, nobody can make such propellers powerful/large enough. IIRC the largest CPP is <40MW. We are talking about sizes like this. 80.218.218.68 19:50, 18 March 2007 (UTC)
How is this engine started? Pneumatically?
RTA96-C : what are the (a) compression ratio, (b) maximum compression pressure and firing prressure at full load?
Regards
Ritinkar Sen
I have troubles to believe, that the engine is really started by compressed air because the small electric motor left to the flywheel in this picture
http://people.bath.ac.uk/ccsshb/12cyl/rta96c_crank.jpg
looks perfectly like a starting device to me. If the engine is really started with compressed air, what purpose have the gearwheel teeth of the flywheel? Do they drive alternators?
Regards,
euphras
It is started by compressed air. The small electric motor is to turn the engine to carry out maintenance or position pistons etc and the motor drives the flywheel through reduction gears. That's why you see teeth on the flywheel.
oi...Modern Marine Diesel Engines are started by Compressed air admitted to each cylinder in the same order as the firing sequence. Smaller engines are usually started by a small hydraulic or pneumatic motor (even smaller by electric motor). The above person is correct, usually called the "turning gear", that small motor has been in existence since the old steam days. Basically any time maintenance or engine inspections are performed, the turning gear is used to slowly rotate the engine (slowly in that the gearing allows for a smaller motor to be used, at the same time lowering the RPM of shaft speed @ turning gear speed. Hengineer 07:08, 18 March 2007 (UTC)
-- Ritinkarsen 12:06, 23 June 2006 (UTC)…-- Ritinkarsen 12:06, 23 June 2006 (UTC)I'd say it's a 14 cylinder engine in the picture...
there is no 14 Cylinder version yet.. i don't think it wil come in this type anyway
If you look at the photos from Hyundai plant, you will see that the 14-cylinder is actually a 8 + 6 cylinder engines manufactured in one piece, it's obvious from the crankshaft. It makes sense to make it that way for the torque distribution over the crankshaft. — Preceding unsigned comment added by 90.64.17.186 ( talk) 06:03, 13 October 2018 (UTC)
Wärtsilä has changed the name of this engine into Wärtsilä RT-Flex, do we have to change the name also ??
Main and only reason why all big engines have crosshead is because of huge masses in motion and extreme side forces which will destroy cylinder liner after few hours in operation if engine does not have crosshead bearing. As it is, crosshead bearing take those forces and pisron, rings, and liner are not affected by them. Due to distance from crancase, lubrication of liner must be provided with a pump, not by splashing, and that is reason for additional lubricating system. Comment in article is completly false. -- Billy the lid ( talk) 09:36, 10 January 2008 (UTC) some trunk piston engines also have addtitional piston lubrication .wdl 24.146.23.84 ( talk) 15:30, 10 October 2008 (UTC)wdl
Actually, these engine have no choice but to have crossheads. Their strokes are so long that connecting rod and crank will overlap with the liner. Just remove the crosshead and see where is the crankpin when the piston is at TDC and how wide the connecting rod will travel when piston moves down to BDC from TDC. Rgds/Rajesh —Preceding unsigned comment added by 203.116.194.131 ( talk) 11:10, 19 January 2011 (UTC)
Can we get a photo or two of this thing for the article? I read the description of a 5-story tall engine and, well, I want to see it. LOL -- Ragemanchoo ( talk) 02:27, 5 June 2008 (UTC)
Where does the figure, "~160 grammes @ full load", come from? According to the Wärtsilä website the fuel consumption at full load is over 170 g/kWh. Tupsumato ( talk) 14:02, 7 October 2010 (UTC)
This article describes two different engines in a manner that may mislead and confuse the reader. Wärtsilä-Sulzer RTA96C (there is no hyphen) has an injection pump, overhead cam and all other things of a traditional diesel. Wärtsilä-Sulzer RTA-flex96C, however, doesn't have all that. It's a common-rail engine. Somebody fix this. Le Grand Bleu ( talk) 18:43, 26 May 2015 (UTC)
Doesn't Common Rail only refer to the fuel injection system, and NOT to some of the other mechanical items mentioned? Oceanic84 ( talk) 17:15, 16 February 2023 (UTC)