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The High Speed Marine Engine that Makes 1,822 hp and 6,300 lb-ft of Torque

Scorpio

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#1
Yanmar 12AYM-WGT; The High Speed Marine Engine that Makes 1,822 hp and 6,300 lb-ft of Torque


Truck Trend

Courtesy of the Manufacturer, John Lehenbauer 4 days ago


© Provided by TruckTrend 001 Yanmar 12AYM WGT Marine Engine

Yanmar is a manufacturer of high-speed commercial marine diesel engines, and the 12AYM-WGT is its largest, highest-output powerplant for seagoing vessels. With 1,822 hp and 6,300 lb-ft of torque, this workhorse provides ample power for ships to carry out their required duties, and still maintain stable cruising speeds under load. The abundance of low-rpm torque, thanks to the use of a long piston stroke, makes the 12AYM-WGT very well suited for use in tugboat applications, where large amounts of grunt are needed.

This engine is designed to be tough and reliable, and it will provide economical, clean power (it meets 2016’s emission standards). Yanmar is able to do this with a development that it calls EcoDiesel Technology, which does not use any electronic engine controls to govern emissions. The management is done mechanically, to avoid failures caused by electronics’ exposure to engine-compartment heat. The EcoDiesel technology concentrates on the engine’s combustion process. Improvements of the combustion conditions in the cylinder lead to a reduction in fuel consumption, smoke and NOx emissions. Normally, when trying to reduce NOx, fuel usage and exhaust output are negatively affected. But, the Eco Diesel’s more efficient combustion comes from the use of fuel injectors with multiple micro-sized holes, deeper combustion chambers and reshaped 4–valve-per-cylinder heads. This new efficiency also provides the engine with increased service intervals as well as horsepower and torque gains.

The 12AYM-WGT is Yanmar’s largest high-speed commercial marine engine. Its 1,800 hp and 6,300 lb-ft allow working ships to operate quickly, economically and in compliance with emission standards.

© Provided by TruckTrend 002 Yanmar 12AYM WGT Marine Engine
A boost compensator, which regulates the air/fuel mixture in each cylinder, helps reduce black smoke and fuel consumption under hard acceleration. An internal EGR system is used to further lower emissions. The EGR is controlled by the lift of intake and exhaust valves, which eliminates the need for external control devices. The engine’s design provides a fuel economy gain of 53 gallons of fuel per hour over older models, and allows the 12AYM-WGT to meet Tier II emissions standards. The engine is expected to meet Tier III standards by 2017.

Engines that are used in marine settings need to be durable and serviceable. Yanmar addresses durability in a couple of ways. Sillicard, an artificial ceramic made from silicon carbide that’s second only to diamonds in hardness, coats the surface of the cylinder liners to make them tough and resistant to wear. The liners are then paired with ductile cast-iron pistons that use a nitride stainless steel ring with very tight tolerances.

The engine uses two heavy-duty injection pumps instead of one to improve serviceability in the fuel system. This allows for each bank of injectors on the V-12 to have its own pump (the pumps are sourced from Yanmar’s marine six-cylinder engines).

The engine block has large inspection windows on the side of the casting, which allows ease of piston replacement. Another innovative design used on the 12AYM-WGT is the use of individual heads for each cylinder. The unique configuration facilitates easier repairs.

The twin turbochargers and air-to-water intercooler are mounted on the rear of the engine so exhaust can be easily routed out of the vessel.

© Provided by TruckTrend 003 Yanmar 12AYM WGT Marine Engine
Building marine diesels is nothing new for Yanmar. The company built its first engine over 90 years ago. That powerplant had low compression and burned fuel oil, which doesn’t support much horsepower, instead of diesel. However, by continuing to innovate, Yanmar has become the maker of very efficient, high-powered marine-diesel engines

SPECIFICATIONS
Engine: Yanmar 12AYM-WGT
Displacement: 40.8L (2,489ci)
Engine Layout: V-12, 90 degree
Valvetrain: DOHC
Bore x Stroke: 6.10 x 7.09 inches (155 x 180mm)
Compression Ratio: 13.2:1
Head material: Iron
Block material: Cast iron
Piston material: Ductile Cast-iron
Power: 1,822 hp @ 1,940 rpm
Torque: 6,300 lb-ft @ 1,350 rpm
Induction: Twin turbocharged
Exhaust: Water-cooled, cast-iron manifolds
Intercooler: Air-to-water
Cooling System: Seawater and freshwater/coolant
Coolant Capacity: 59.4 gallons
Fuel System: Direct injection
Lubrication System: Wet sump
Lubrication capacity: 45 gallons
Dry Weight: 10,736 pounds
Length: 103 inches
Width: 65 inches
Height: 67 inches

http://www.msn.com/en-us/autos/news...nd-6300-lb-ft-of-torque/ar-BBtEJfl?li=BBnb4R5
 

Ensoniq

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#4
8 times the displacement of a typical v8

What a beast

There's no substitute for cubic inches.
 

Howdy

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#5
Yanmar is able to do this with a development that it calls EcoDiesel Technology, which does not use any electronic engine controls to govern emissions.
I hope that catches on. Electronics renders equipment unserviceable.

I had to look up the max RPM: 1940 RPM.

I wonder why the compression ratio is only 13.2 to one.
 

Ensoniq

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#8
I hope that catches on. Electronics renders equipment unserviceable.

I had to look up the max RPM: 1940 RPM.

I wonder why the compression ratio is only 13.2 to one.
They didn't say what the boost was either. I'll bet 4 or 5 bar
 

Howdy

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#9
good question Howdy,

I think the turbos are helping in that regard?
Turbo diesels have lower compression ratios than naturally aspirated diesels. For example a given naturally aspirated diesel engine with 20 to one compression ratio would be 17 to one if turbo's. Still....13.2 to one? Seems it would take some fast cranking to start it.

Compression ratio numbers are based on mechanical ratio and don't take into effect turbo boost.
 

ErrosionOfAccord

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#11
The large diesel engines I'm familiar with often start with compressed air.
 

searcher

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#14
Starting a YANMAR ship engine
Muthu Vignesh


Published on Dec 11, 2014
A small video of starting a ship engine
 

searcher

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#15
FWIW....................

Main Engine Starting Air System.wmv
marineinsight


Published on May 19, 2012
The Following Video shows the complete illustration of how the ships engine starting air system works.The starting air sequence is explained step wise with complete details of air flow. Checkout practical maritime eBooks at http://www.marineinsight.com/guides
 

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#16
An early Yanmar...................

Old Engines in Japan 1930s YANMAR DIESEL ENGINE Type HE
nico poge


Published on Nov 2, 2014
YANMAR DIESEL ENGINE Type HE
20hp/450rpm
Around 1938
Manufacturer : YAMAOKA Internal Combustion Machines Ltd.
Manufacturer's Location : Chayamachi, Kita-ku, Osaka-shi, Osaka, Japan

At first a sound hearing lively is a sound from the engines of the neighbors. The exhaust of the type HE is exhausted calmly to express a sigh after having hit a silencer.

This Engine is not my thing. I observed this engine at 2013 HAKUBA engine shows.
 

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#18
How to do a Yanmar 2GM20F Engine service
UnwrittenTimeline


Published on Mar 2, 2016
We completed an engine service on a Y2GM20F engine in a 2002 Hunter 326 sailboat using the Niemiec Marine Y2GM20F Minor kit. We replaced the impeller, belts, air filter, and fuel filter. Filmed on location in Oriental, NC.

A list of all parts used:
Primary Fuel Filter
Primary Fuel Filter Bleed Screw
Impeller
Impeller gasket
Impeller belt
Alternator belt
Air filter
Coolant treatment
Marine Diesel Fuel Treatment

Engine kit used:
http://marinedieselparts.com/store/2g...

Check us out at http://www.unwrittentimeline.com/

Music: The world in you by Mike Kuntz
 

searcher

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#20
Von's Boat Motor - Yanmar 4JH2-HTE
puunui


Uploaded on Jan 24, 2009
Dad's been rebuilding this boat motor for the past several weeks...here is it's first start up on 01/24/2009.
 

searcher

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#21
Riscaldamento motore marino Yanmar - 440 CV da Jolly Drive Marine
Metabond Italia


Published on Mar 3, 2012
Riscaldamento motore marino Yanmar - 440 CV da Jolly Drive Marine
www.metabonditalia.it
Facebook: Metabond Italia
 

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#22
Yanmar marine joystick underwater view
njasaa


Published on May 29, 2012
Yanmar marine 8lv duoprop zt370 eos system on terra nauta yachts - underwater footage
 

searcher

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#23
Yanmar 3GM30 top end rebuild
Dan L


Published on Feb 9, 2015
Valve Lapping, Valve timing, fuel tank replacement etc on a Yanmar 3GM30
 

searcher

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#24
Not a Yanmar.....................

Container Ship Main Engine Starting
Engineering


Published on Jan 18, 2014
This video shows how to operate the main engine (94rpm max) of a container ship from the emergency manoeuvring station (engine side control console).

The engine is started using compressed air which pushes the pistons down in sequence to bring the speed up before fuel is injected.

In this video the large hand wheel is used to regulate the rack and slide operation of all of the engine's fuel pumps which control the amount of fuel entering the cylinders and so, the speed of the engine.

Main Engine Man B&W 12K98MC
- 12 Straight cylinders in-line
- 980mm Bore
- 2660mm Stroke
- 68640 kW (92048 hp) @ 94 rpm

8478 teu, 91038 Gross tonnage, 334 Metre long Container ship.
 

searcher

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#25
Must Watch- Engine Room Tour of Cargo ship
marineinsight


Published on May 8, 2014
This Video is shot by Marine Engineer Arjun Kalra in a container ship- MSC MATILDE. He has brilliantly covered all the important engine room machinery and systems right from tunnel to funnel (Top to Bottom). If you are a new bee, this is a must watch video to understand how the engine room of a cargo ship looks like.

Thank You Arjun Kalra for submitting this video.
 

searcher

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#26
Back to Yanmar.................

ANTIQUE YANMAR DIESEL ENGINE REBUILD (PART 1)
805ROADKING


Published on Aug 3, 2015
Rebuilding an antique Yanmar Diesel Engine and Checkin' out Mike's new house
 

searcher

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#27
ANTIQUE YANMAR DIESEL ENGINE REBUILD (PART 2)
805ROADKING


Published on Nov 18, 2015
Rebuilding an antique Yanmar Diesel Engine
 

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#28
ANTIQUE YANMAR DIESEL ENGINE REBUILD (PART 3)
805ROADKING


Published on Nov 20, 2015
Rebuilding an antique Yanmar Diesel Engine
 

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#29
Yanmar antique diesel engine generator
Steve Varberg


Published on Feb 15, 2014
Yanmar N22 (22Hp at 1100rpm) Excellent old engine, still a reliable and efficient backup diesel generator. I don't know how old it is but they certainly do not build them this way any more.
 

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#30
V12 7200HP | Amazing Diesel Engineroom!
ShippingHarbors


Published on Aug 21, 2015
7200 Horsepower Tugboat Engine Startup

This tugboat has 2x 3600 horsepower V12 Diesel Engines, and each engine has a cubic capacity of 197 Liters.

At full power both engines consume about 1500 liter/hour
 

Buck

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#31
But it's a V configuration
Life expectancy of a V type diesel engine is crap
 

Howdy

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#32
But it's a V configuration
Life expectancy of a V type diesel engine is crap
True story. The longest lasting engines I've ever known were inline sixes. Two Waukesha 1197's with 65K hours and a 3406 Cat with 80K hours, original rod and main bearings and piston rings.
 

Buck

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#33
True story. The longest lasting engines I've ever known were inline sixes. Two Waukesha 1197's with 65K hours and a 3406 Cat with 80K hours, original rod and main bearings and piston rings.
And the worst application was to use a 2 stroke diesel in a truck
Those things bled more oil than they consumed, great acceleration though

and talk about fun...runaway
 

REO 54

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#34
The large diesel engines I'm familiar with often start with compressed air.
My 8v92 starts like that. Love it when when folks are standing next to my truck on the the ferry and I star up to unload.....

And the worst application was to use a 2 stroke diesel in a truck
Those things bled more oil than they consumed, great acceleration though

and talk about fun...runaway

What's the problem? I have two 2 strokes. 671 and the 8v92. Don't have to change the oil and I keep the dust down on my road! (lol)
 

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#35

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#36
First Startup: 8 M 32 C Diesel Engine
Cat Marine


Published on Mar 3, 2015
Getting it right the first time: listen to the first startup of the 8 M 32 C diesel engine onboard the 69.9 meter Torbas fishing vessel from Cat dealer Pon Power Scandinavia. And yes, we'll paint our power any color you want. More on the 8 M 32 C: http://bit.ly/18JwBTL.
 

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#37
Engine Start of MAN Diesel Typ 9L 58/64
Axel T


Uploaded on Jun 7, 2011
MAN Diesel Typ 9L 58/64 Marine Engine 17100 hp
 

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#38
Sure as hell not a Yanmar. Some old technology in the next few.

Steam turbine ship engine room tour part 1
gpsomers


Uploaded on Oct 4, 2010
A tour of the engine room of a 17000hp 900psi steam turbine tank ship


Steam turbine ship engine room tour part 2
gpsomers


Uploaded on Oct 4, 2010
Part 2 of a tour of the engine room of a 17000hp 900psi steam turbine ships engine room


Steam Ship Control Room
gpsomers


Uploaded on Jun 14, 2011
Inside the control room on a 17,000 hp 900psi geared steam turbine ship while at the dock and at sea.
 

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#39
s/s Sankt Erik engine rooms
carljesper


Uploaded on Dec 23, 2007
Icebreaker Sankt Erik triple expansion steam engines 1200 hp (forward, Klug reversing link motion) and 2800 hp (aft, Flodman reversing link motion). Built 1915, homeport Stockholm. Recorded 15th Aug 2007.
 

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#40
Let's return to modern times.............

Engine room of LNG vessel with Electric Propulsion (DFDE)
supergipas


Published on Feb 15, 2016
A quick view of an Engine Room of a LNG Vessel with Electric Propulsion

p.s. sorry for the shaky video but I'm not a good cameraman :)